/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 09:19:18,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 09:19:18,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 09:19:18,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 09:19:18,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 09:19:18,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 09:19:18,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 09:19:18,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 09:19:18,462 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 09:19:18,465 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 09:19:18,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 09:19:18,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 09:19:18,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 09:19:18,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 09:19:18,467 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 09:19:18,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 09:19:18,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 09:19:18,468 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 09:19:18,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 09:19:18,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 09:19:18,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 09:19:18,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 09:19:18,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 09:19:18,469 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 09:19:18,469 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 09:19:18,470 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 09:19:18,470 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 09:19:18,470 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 09:19:18,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 09:19:18,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 09:19:18,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 09:19:18,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 09:19:18,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 09:19:18,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 09:19:18,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:19:18,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 09:19:18,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 09:19:18,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 09:19:18,472 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 09:19:18,472 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 09:19:18,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 09:19:18,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 09:19:18,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 09:19:18,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 09:19:18,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 09:19:18,473 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 09:19:18,473 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 09:19:18,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 09:19:18,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 09:19:18,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 09:19:18,696 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 09:19:18,697 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 09:19:18,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-12-25 09:19:19,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 09:19:20,403 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 09:19:20,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-12-25 09:19:20,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d2e6a6d1/a0d7073103ea4599a0e5083919ec6514/FLAG1475562ad [2023-12-25 09:19:20,442 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d2e6a6d1/a0d7073103ea4599a0e5083919ec6514 [2023-12-25 09:19:20,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 09:19:20,446 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 09:19:20,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 09:19:20,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 09:19:20,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 09:19:20,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:19:20" (1/1) ... [2023-12-25 09:19:20,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28df7dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:20, skipping insertion in model container [2023-12-25 09:19:20,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:19:20" (1/1) ... [2023-12-25 09:19:20,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 09:19:21,107 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[36688,36701] [2023-12-25 09:19:21,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:19:21,437 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 09:19:21,660 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[36688,36701] [2023-12-25 09:19:21,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:19:21,878 INFO L206 MainTranslator]: Completed translation [2023-12-25 09:19:21,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21 WrapperNode [2023-12-25 09:19:21,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 09:19:21,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 09:19:21,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 09:19:21,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 09:19:21,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:21,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,029 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5142 [2023-12-25 09:19:22,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 09:19:22,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 09:19:22,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 09:19:22,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 09:19:22,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,112 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 09:19:22,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 09:19:22,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 09:19:22,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 09:19:22,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 09:19:22,251 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (1/1) ... [2023-12-25 09:19:22,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:19:22,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 09:19:22,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 09:19:22,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 09:19:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 09:19:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 09:19:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 09:19:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 09:19:22,514 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 09:19:22,515 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 09:19:24,747 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 09:19:24,801 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 09:19:24,801 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 09:19:24,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:19:24 BoogieIcfgContainer [2023-12-25 09:19:24,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 09:19:24,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 09:19:24,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 09:19:24,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 09:19:24,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:19:20" (1/3) ... [2023-12-25 09:19:24,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320ce21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:19:24, skipping insertion in model container [2023-12-25 09:19:24,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:19:21" (2/3) ... [2023-12-25 09:19:24,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320ce21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:19:24, skipping insertion in model container [2023-12-25 09:19:24,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:19:24" (3/3) ... [2023-12-25 09:19:24,808 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-12-25 09:19:24,820 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 09:19:24,820 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 09:19:24,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 09:19:24,883 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;@70a4c0d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 09:19:24,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 09:19:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 1432 states, 1430 states have (on average 1.7874125874125875) internal successors, (2556), 1431 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:24,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-25 09:19:24,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:24,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:24,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:24,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1006861370, now seen corresponding path program 1 times [2023-12-25 09:19:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466267283] [2023-12-25 09:19:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:24,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:24,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:24,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:24,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 09:19:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:25,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:19:25,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:25,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:25,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:25,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466267283] [2023-12-25 09:19:25,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466267283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:25,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:25,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:25,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779849506] [2023-12-25 09:19:25,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:25,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:19:25,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:19:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:25,436 INFO L87 Difference]: Start difference. First operand has 1432 states, 1430 states have (on average 1.7874125874125875) internal successors, (2556), 1431 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:25,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:25,579 INFO L93 Difference]: Finished difference Result 2874 states and 5039 transitions. [2023-12-25 09:19:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:19:25,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 351 [2023-12-25 09:19:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:25,602 INFO L225 Difference]: With dead ends: 2874 [2023-12-25 09:19:25,602 INFO L226 Difference]: Without dead ends: 2004 [2023-12-25 09:19:25,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:25,611 INFO L413 NwaCegarLoop]: 3032 mSDtfsCounter, 1178 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 5363 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:25,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 5363 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:19:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2023-12-25 09:19:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 2002. [2023-12-25 09:19:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 1.673663168415792) internal successors, (3349), 2001 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3349 transitions. [2023-12-25 09:19:25,716 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3349 transitions. Word has length 351 [2023-12-25 09:19:25,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:25,718 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 3349 transitions. [2023-12-25 09:19:25,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:25,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3349 transitions. [2023-12-25 09:19:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-12-25 09:19:25,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:25,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:25,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:25,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:25,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:25,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:25,931 INFO L85 PathProgramCache]: Analyzing trace with hash 554851952, now seen corresponding path program 1 times [2023-12-25 09:19:25,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:25,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594044826] [2023-12-25 09:19:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:25,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:25,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:25,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:25,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 09:19:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:26,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:19:26,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:26,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:26,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:26,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594044826] [2023-12-25 09:19:26,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594044826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:26,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:26,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:26,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377346297] [2023-12-25 09:19:26,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:26,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:19:26,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:19:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:19:26,529 INFO L87 Difference]: Start difference. First operand 2002 states and 3349 transitions. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:26,761 INFO L93 Difference]: Finished difference Result 5954 states and 9956 transitions. [2023-12-25 09:19:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:19:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 353 [2023-12-25 09:19:26,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:26,780 INFO L225 Difference]: With dead ends: 5954 [2023-12-25 09:19:26,781 INFO L226 Difference]: Without dead ends: 3964 [2023-12-25 09:19:26,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:26,786 INFO L413 NwaCegarLoop]: 3722 mSDtfsCounter, 5453 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5453 SdHoareTripleChecker+Valid, 6026 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:26,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5453 Valid, 6026 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:19:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2023-12-25 09:19:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 3962. [2023-12-25 09:19:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 1.6667508204998738) internal successors, (6602), 3961 states have internal predecessors, (6602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 6602 transitions. [2023-12-25 09:19:26,881 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 6602 transitions. Word has length 353 [2023-12-25 09:19:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:26,882 INFO L495 AbstractCegarLoop]: Abstraction has 3962 states and 6602 transitions. [2023-12-25 09:19:26,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 6602 transitions. [2023-12-25 09:19:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-25 09:19:26,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:26,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:26,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:27,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:27,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:27,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash 327581407, now seen corresponding path program 1 times [2023-12-25 09:19:27,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:27,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77633571] [2023-12-25 09:19:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:27,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:27,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:27,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:27,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 09:19:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:27,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:19:27,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:27,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:27,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:27,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77633571] [2023-12-25 09:19:27,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77633571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:27,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:27,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439941336] [2023-12-25 09:19:27,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:27,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:19:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:27,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:19:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:19:27,654 INFO L87 Difference]: Start difference. First operand 3962 states and 6602 transitions. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:27,849 INFO L93 Difference]: Finished difference Result 11794 states and 19649 transitions. [2023-12-25 09:19:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:19:27,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 355 [2023-12-25 09:19:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:27,877 INFO L225 Difference]: With dead ends: 11794 [2023-12-25 09:19:27,878 INFO L226 Difference]: Without dead ends: 7845 [2023-12-25 09:19:27,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:27,889 INFO L413 NwaCegarLoop]: 3617 mSDtfsCounter, 5586 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5586 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:27,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5586 Valid, 5921 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:19:27,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7845 states. [2023-12-25 09:19:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 7843. [2023-12-25 09:19:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 7842 states have (on average 1.6599081866870695) internal successors, (13017), 7842 states have internal predecessors, (13017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 13017 transitions. [2023-12-25 09:19:28,058 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 13017 transitions. Word has length 355 [2023-12-25 09:19:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:28,058 INFO L495 AbstractCegarLoop]: Abstraction has 7843 states and 13017 transitions. [2023-12-25 09:19:28,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 13017 transitions. [2023-12-25 09:19:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 09:19:28,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:28,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:28,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:28,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:28,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:28,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:28,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1023907468, now seen corresponding path program 1 times [2023-12-25 09:19:28,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:28,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243240723] [2023-12-25 09:19:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:28,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:28,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:28,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:28,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 09:19:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:28,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:19:28,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:28,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:28,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243240723] [2023-12-25 09:19:28,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243240723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:28,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:28,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:28,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949323282] [2023-12-25 09:19:28,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:19:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:28,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:19:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:28,615 INFO L87 Difference]: Start difference. First operand 7843 states and 13017 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:28,742 INFO L93 Difference]: Finished difference Result 23458 states and 38928 transitions. [2023-12-25 09:19:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:19:28,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2023-12-25 09:19:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:28,790 INFO L225 Difference]: With dead ends: 23458 [2023-12-25 09:19:28,791 INFO L226 Difference]: Without dead ends: 15647 [2023-12-25 09:19:28,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:28,808 INFO L413 NwaCegarLoop]: 4751 mSDtfsCounter, 2372 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 7127 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:28,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 7127 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:19:28,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15647 states. [2023-12-25 09:19:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15647 to 7889. [2023-12-25 09:19:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7889 states, 7888 states have (on average 1.6589756592292089) internal successors, (13086), 7888 states have internal predecessors, (13086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7889 states to 7889 states and 13086 transitions. [2023-12-25 09:19:29,040 INFO L78 Accepts]: Start accepts. Automaton has 7889 states and 13086 transitions. Word has length 359 [2023-12-25 09:19:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:29,041 INFO L495 AbstractCegarLoop]: Abstraction has 7889 states and 13086 transitions. [2023-12-25 09:19:29,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7889 states and 13086 transitions. [2023-12-25 09:19:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 09:19:29,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:29,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:29,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:29,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:29,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:29,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:29,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1754243825, now seen corresponding path program 1 times [2023-12-25 09:19:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495191324] [2023-12-25 09:19:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:29,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:29,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:29,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 09:19:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:29,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:19:29,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:29,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:29,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495191324] [2023-12-25 09:19:29,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495191324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:29,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:29,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:29,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369557100] [2023-12-25 09:19:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:29,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:19:29,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:29,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:19:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:19:29,881 INFO L87 Difference]: Start difference. First operand 7889 states and 13086 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:30,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:30,064 INFO L93 Difference]: Finished difference Result 23348 states and 38727 transitions. [2023-12-25 09:19:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:19:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2023-12-25 09:19:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:30,092 INFO L225 Difference]: With dead ends: 23348 [2023-12-25 09:19:30,092 INFO L226 Difference]: Without dead ends: 15539 [2023-12-25 09:19:30,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:30,109 INFO L413 NwaCegarLoop]: 3722 mSDtfsCounter, 5429 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 6026 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:30,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5429 Valid, 6026 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:19:30,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15539 states. [2023-12-25 09:19:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15539 to 15537. [2023-12-25 09:19:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15537 states, 15536 states have (on average 1.652484552008239) internal successors, (25673), 15536 states have internal predecessors, (25673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15537 states to 15537 states and 25673 transitions. [2023-12-25 09:19:30,330 INFO L78 Accepts]: Start accepts. Automaton has 15537 states and 25673 transitions. Word has length 359 [2023-12-25 09:19:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:30,331 INFO L495 AbstractCegarLoop]: Abstraction has 15537 states and 25673 transitions. [2023-12-25 09:19:30,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:30,332 INFO L276 IsEmpty]: Start isEmpty. Operand 15537 states and 25673 transitions. [2023-12-25 09:19:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-25 09:19:30,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:30,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:30,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:30,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:30,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:30,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:30,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1053499817, now seen corresponding path program 1 times [2023-12-25 09:19:30,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:30,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249437921] [2023-12-25 09:19:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:30,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:30,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:30,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 09:19:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:30,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:19:30,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:30,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:30,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:30,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249437921] [2023-12-25 09:19:30,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249437921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:30,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:30,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:30,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682070704] [2023-12-25 09:19:30,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:30,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:19:30,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:30,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:19:30,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:30,872 INFO L87 Difference]: Start difference. First operand 15537 states and 25673 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:31,006 INFO L93 Difference]: Finished difference Result 46466 states and 76785 transitions. [2023-12-25 09:19:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:19:31,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 362 [2023-12-25 09:19:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:31,060 INFO L225 Difference]: With dead ends: 46466 [2023-12-25 09:19:31,060 INFO L226 Difference]: Without dead ends: 30998 [2023-12-25 09:19:31,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:31,089 INFO L413 NwaCegarLoop]: 3888 mSDtfsCounter, 2371 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 6264 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:31,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 6264 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:19:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30998 states. [2023-12-25 09:19:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30998 to 15600. [2023-12-25 09:19:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15600 states, 15599 states have (on average 1.6508750560933394) internal successors, (25752), 15599 states have internal predecessors, (25752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15600 states to 15600 states and 25752 transitions. [2023-12-25 09:19:31,378 INFO L78 Accepts]: Start accepts. Automaton has 15600 states and 25752 transitions. Word has length 362 [2023-12-25 09:19:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:31,378 INFO L495 AbstractCegarLoop]: Abstraction has 15600 states and 25752 transitions. [2023-12-25 09:19:31,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 15600 states and 25752 transitions. [2023-12-25 09:19:31,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-25 09:19:31,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:31,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:31,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:31,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:31,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:31,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:31,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1151290830, now seen corresponding path program 1 times [2023-12-25 09:19:31,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:31,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657548224] [2023-12-25 09:19:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:31,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:31,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:31,610 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:31,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 09:19:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:31,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:19:31,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:31,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:31,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:31,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657548224] [2023-12-25 09:19:31,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657548224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:31,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:31,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:19:31,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775493793] [2023-12-25 09:19:31,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:31,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:19:31,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:31,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:19:31,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:19:31,955 INFO L87 Difference]: Start difference. First operand 15600 states and 25752 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:32,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:32,158 INFO L93 Difference]: Finished difference Result 59707 states and 98209 transitions. [2023-12-25 09:19:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:19:32,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 365 [2023-12-25 09:19:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:32,233 INFO L225 Difference]: With dead ends: 59707 [2023-12-25 09:19:32,233 INFO L226 Difference]: Without dead ends: 45397 [2023-12-25 09:19:32,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:32,261 INFO L413 NwaCegarLoop]: 5941 mSDtfsCounter, 5559 mSDsluCounter, 6810 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5559 SdHoareTripleChecker+Valid, 12751 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:32,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5559 Valid, 12751 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:19:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45397 states. [2023-12-25 09:19:32,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45397 to 16913. [2023-12-25 09:19:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16913 states, 16912 states have (on average 1.6602412488174079) internal successors, (28078), 16912 states have internal predecessors, (28078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16913 states to 16913 states and 28078 transitions. [2023-12-25 09:19:32,741 INFO L78 Accepts]: Start accepts. Automaton has 16913 states and 28078 transitions. Word has length 365 [2023-12-25 09:19:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:32,741 INFO L495 AbstractCegarLoop]: Abstraction has 16913 states and 28078 transitions. [2023-12-25 09:19:32,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 16913 states and 28078 transitions. [2023-12-25 09:19:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-25 09:19:32,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:32,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:32,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-25 09:19:32,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:32,968 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:32,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1731101381, now seen corresponding path program 1 times [2023-12-25 09:19:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579298637] [2023-12-25 09:19:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:32,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:32,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:32,970 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:32,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 09:19:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:33,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:19:33,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:33,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:33,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:33,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579298637] [2023-12-25 09:19:33,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579298637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:33,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:33,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924346080] [2023-12-25 09:19:33,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:19:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:19:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:19:33,505 INFO L87 Difference]: Start difference. First operand 16913 states and 28078 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:33,790 INFO L93 Difference]: Finished difference Result 49826 states and 82772 transitions. [2023-12-25 09:19:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:19:33,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 365 [2023-12-25 09:19:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:33,879 INFO L225 Difference]: With dead ends: 49826 [2023-12-25 09:19:33,879 INFO L226 Difference]: Without dead ends: 33120 [2023-12-25 09:19:33,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:33,912 INFO L413 NwaCegarLoop]: 3720 mSDtfsCounter, 5438 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 6024 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:33,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5438 Valid, 6024 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:19:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33120 states. [2023-12-25 09:19:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33120 to 33118. [2023-12-25 09:19:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33118 states, 33117 states have (on average 1.6538937705710057) internal successors, (54772), 33117 states have internal predecessors, (54772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33118 states to 33118 states and 54772 transitions. [2023-12-25 09:19:34,558 INFO L78 Accepts]: Start accepts. Automaton has 33118 states and 54772 transitions. Word has length 365 [2023-12-25 09:19:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:34,558 INFO L495 AbstractCegarLoop]: Abstraction has 33118 states and 54772 transitions. [2023-12-25 09:19:34,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 33118 states and 54772 transitions. [2023-12-25 09:19:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-25 09:19:34,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:34,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:34,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-25 09:19:34,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:34,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:34,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash -720127295, now seen corresponding path program 1 times [2023-12-25 09:19:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985280065] [2023-12-25 09:19:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:34,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:34,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:34,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:34,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 09:19:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:35,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:19:35,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:35,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:35,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:35,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985280065] [2023-12-25 09:19:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985280065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:35,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:35,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:19:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234847553] [2023-12-25 09:19:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:35,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:19:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:19:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:19:35,213 INFO L87 Difference]: Start difference. First operand 33118 states and 54772 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:35,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:35,849 INFO L93 Difference]: Finished difference Result 119245 states and 195946 transitions. [2023-12-25 09:19:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:19:35,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 367 [2023-12-25 09:19:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:36,000 INFO L225 Difference]: With dead ends: 119245 [2023-12-25 09:19:36,001 INFO L226 Difference]: Without dead ends: 90652 [2023-12-25 09:19:36,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:36,031 INFO L413 NwaCegarLoop]: 6214 mSDtfsCounter, 5207 mSDsluCounter, 6816 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 13030 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:36,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5207 Valid, 13030 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:19:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90652 states. [2023-12-25 09:19:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90652 to 37419. [2023-12-25 09:19:36,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37419 states, 37418 states have (on average 1.6671388101983002) internal successors, (62381), 37418 states have internal predecessors, (62381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37419 states to 37419 states and 62381 transitions. [2023-12-25 09:19:36,888 INFO L78 Accepts]: Start accepts. Automaton has 37419 states and 62381 transitions. Word has length 367 [2023-12-25 09:19:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:36,890 INFO L495 AbstractCegarLoop]: Abstraction has 37419 states and 62381 transitions. [2023-12-25 09:19:36,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 37419 states and 62381 transitions. [2023-12-25 09:19:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 09:19:36,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:36,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:36,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-25 09:19:37,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:37,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:37,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:37,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1540311633, now seen corresponding path program 1 times [2023-12-25 09:19:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:37,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074634735] [2023-12-25 09:19:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:37,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:37,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:37,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:37,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 09:19:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:37,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:19:37,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:38,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:38,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:38,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074634735] [2023-12-25 09:19:38,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074634735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:38,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:38,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:19:38,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825013769] [2023-12-25 09:19:38,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:38,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:19:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:38,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:19:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:38,276 INFO L87 Difference]: Start difference. First operand 37419 states and 62381 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:38,991 INFO L93 Difference]: Finished difference Result 58378 states and 96238 transitions. [2023-12-25 09:19:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:19:38,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 09:19:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:39,113 INFO L225 Difference]: With dead ends: 58378 [2023-12-25 09:19:39,114 INFO L226 Difference]: Without dead ends: 37419 [2023-12-25 09:19:39,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:19:39,128 INFO L413 NwaCegarLoop]: 1858 mSDtfsCounter, 3556 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3556 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:39,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3556 Valid, 3704 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 09:19:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37419 states. [2023-12-25 09:19:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37419 to 37419. [2023-12-25 09:19:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37419 states, 37418 states have (on average 1.6628627933080335) internal successors, (62221), 37418 states have internal predecessors, (62221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37419 states to 37419 states and 62221 transitions. [2023-12-25 09:19:39,636 INFO L78 Accepts]: Start accepts. Automaton has 37419 states and 62221 transitions. Word has length 369 [2023-12-25 09:19:39,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:39,637 INFO L495 AbstractCegarLoop]: Abstraction has 37419 states and 62221 transitions. [2023-12-25 09:19:39,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 37419 states and 62221 transitions. [2023-12-25 09:19:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 09:19:39,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:39,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:39,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-25 09:19:39,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:39,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:39,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash -645634203, now seen corresponding path program 1 times [2023-12-25 09:19:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:39,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781606382] [2023-12-25 09:19:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:39,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:39,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:39,893 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:39,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 09:19:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:40,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:19:40,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:40,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:40,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:40,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781606382] [2023-12-25 09:19:40,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781606382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:40,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:40,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:40,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386253203] [2023-12-25 09:19:40,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:40,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:19:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:19:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:40,217 INFO L87 Difference]: Start difference. First operand 37419 states and 62221 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:40,546 INFO L93 Difference]: Finished difference Result 74503 states and 122007 transitions. [2023-12-25 09:19:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:19:40,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 09:19:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:40,632 INFO L225 Difference]: With dead ends: 74503 [2023-12-25 09:19:40,633 INFO L226 Difference]: Without dead ends: 52725 [2023-12-25 09:19:40,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:40,668 INFO L413 NwaCegarLoop]: 3006 mSDtfsCounter, 1075 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:40,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 5142 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:19:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52725 states. [2023-12-25 09:19:41,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52725 to 52723. [2023-12-25 09:19:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52723 states, 52722 states have (on average 1.6455559349038351) internal successors, (86757), 52722 states have internal predecessors, (86757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52723 states to 52723 states and 86757 transitions. [2023-12-25 09:19:41,567 INFO L78 Accepts]: Start accepts. Automaton has 52723 states and 86757 transitions. Word has length 369 [2023-12-25 09:19:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:41,568 INFO L495 AbstractCegarLoop]: Abstraction has 52723 states and 86757 transitions. [2023-12-25 09:19:41,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 52723 states and 86757 transitions. [2023-12-25 09:19:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 09:19:41,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:41,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:41,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:41,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:41,822 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:41,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:41,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1808587198, now seen corresponding path program 1 times [2023-12-25 09:19:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927784671] [2023-12-25 09:19:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:41,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:41,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:41,825 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:41,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 09:19:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:42,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:19:42,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:42,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:42,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:42,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927784671] [2023-12-25 09:19:42,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927784671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:42,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:42,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:42,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780028456] [2023-12-25 09:19:42,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:42,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:19:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:42,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:19:42,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:19:42,541 INFO L87 Difference]: Start difference. First operand 52723 states and 86757 transitions. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:43,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:43,222 INFO L93 Difference]: Finished difference Result 154604 states and 254383 transitions. [2023-12-25 09:19:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:19:43,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 09:19:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:43,386 INFO L225 Difference]: With dead ends: 154604 [2023-12-25 09:19:43,386 INFO L226 Difference]: Without dead ends: 103081 [2023-12-25 09:19:43,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:43,414 INFO L413 NwaCegarLoop]: 3645 mSDtfsCounter, 5294 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5294 SdHoareTripleChecker+Valid, 5915 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:43,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5294 Valid, 5915 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:19:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103081 states. [2023-12-25 09:19:44,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103081 to 103079. [2023-12-25 09:19:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103079 states, 103078 states have (on average 1.6381381090048313) internal successors, (168856), 103078 states have internal predecessors, (168856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103079 states to 103079 states and 168856 transitions. [2023-12-25 09:19:45,210 INFO L78 Accepts]: Start accepts. Automaton has 103079 states and 168856 transitions. Word has length 369 [2023-12-25 09:19:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:45,211 INFO L495 AbstractCegarLoop]: Abstraction has 103079 states and 168856 transitions. [2023-12-25 09:19:45,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 103079 states and 168856 transitions. [2023-12-25 09:19:45,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-25 09:19:45,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:45,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:45,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:45,741 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:45,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash 34383057, now seen corresponding path program 1 times [2023-12-25 09:19:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:45,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805219938] [2023-12-25 09:19:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:45,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:45,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:45,743 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:45,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 09:19:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:46,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:19:46,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:46,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:46,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:46,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805219938] [2023-12-25 09:19:46,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805219938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:46,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:46,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:19:46,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850442968] [2023-12-25 09:19:46,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:46,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:19:46,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:19:46,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:46,391 INFO L87 Difference]: Start difference. First operand 103079 states and 168856 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:47,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:47,534 INFO L93 Difference]: Finished difference Result 287263 states and 467713 transitions. [2023-12-25 09:19:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:19:47,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 371 [2023-12-25 09:19:47,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:47,786 INFO L225 Difference]: With dead ends: 287263 [2023-12-25 09:19:47,786 INFO L226 Difference]: Without dead ends: 196523 [2023-12-25 09:19:47,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:47,872 INFO L413 NwaCegarLoop]: 4575 mSDtfsCounter, 1959 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 6855 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:47,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 6855 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:19:48,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196523 states. [2023-12-25 09:19:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196523 to 196521. [2023-12-25 09:19:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196521 states, 196520 states have (on average 1.626323020557704) internal successors, (319605), 196520 states have internal predecessors, (319605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196521 states to 196521 states and 319605 transitions. [2023-12-25 09:19:51,100 INFO L78 Accepts]: Start accepts. Automaton has 196521 states and 319605 transitions. Word has length 371 [2023-12-25 09:19:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:19:51,100 INFO L495 AbstractCegarLoop]: Abstraction has 196521 states and 319605 transitions. [2023-12-25 09:19:51,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 196521 states and 319605 transitions. [2023-12-25 09:19:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-12-25 09:19:51,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:19:51,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:19:51,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 09:19:51,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:51,485 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:19:51,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:19:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1476402410, now seen corresponding path program 1 times [2023-12-25 09:19:51,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:19:51,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478162980] [2023-12-25 09:19:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:19:51,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:19:51,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:19:51,487 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:19:51,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 09:19:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:19:51,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:19:51,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:19:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:19:52,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:19:52,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:19:52,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478162980] [2023-12-25 09:19:52,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478162980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:19:52,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:19:52,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:19:52,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934972263] [2023-12-25 09:19:52,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:19:52,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:19:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:19:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:19:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:19:52,039 INFO L87 Difference]: Start difference. First operand 196521 states and 319605 transitions. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:19:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:19:54,473 INFO L93 Difference]: Finished difference Result 712976 states and 1152107 transitions. [2023-12-25 09:19:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:19:54,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 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 375 [2023-12-25 09:19:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:55,309 INFO L225 Difference]: With dead ends: 712976 [2023-12-25 09:19:55,309 INFO L226 Difference]: Without dead ends: 539788 [2023-12-25 09:19:55,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:19:55,486 INFO L413 NwaCegarLoop]: 6611 mSDtfsCounter, 4603 mSDsluCounter, 6703 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4603 SdHoareTripleChecker+Valid, 13314 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:55,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4603 Valid, 13314 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:19:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539788 states. [2023-12-25 09:20:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539788 to 216908. [2023-12-25 09:20:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216908 states, 216907 states have (on average 1.6356779633667886) internal successors, (354790), 216907 states have internal predecessors, (354790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216908 states to 216908 states and 354790 transitions. [2023-12-25 09:20:01,381 INFO L78 Accepts]: Start accepts. Automaton has 216908 states and 354790 transitions. Word has length 375 [2023-12-25 09:20:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:20:01,381 INFO L495 AbstractCegarLoop]: Abstraction has 216908 states and 354790 transitions. [2023-12-25 09:20:01,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 216908 states and 354790 transitions. [2023-12-25 09:20:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-12-25 09:20:01,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:20:01,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:20:01,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 09:20:01,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:01,805 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:20:01,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:20:01,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1510463031, now seen corresponding path program 1 times [2023-12-25 09:20:01,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:20:01,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409246352] [2023-12-25 09:20:01,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:20:01,806 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 [2023-12-25 09:20:01,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:20:01,807 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:20:02,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 09:20:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:20:02,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:20:02,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:20:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:20:02,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:20:02,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:20:02,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409246352] [2023-12-25 09:20:02,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409246352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:20:02,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:20:02,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:20:02,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101963541] [2023-12-25 09:20:02,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:20:02,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:20:02,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:20:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:20:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:20:02,886 INFO L87 Difference]: Start difference. First operand 216908 states and 354790 transitions. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:20:04,800 INFO L93 Difference]: Finished difference Result 469918 states and 772297 transitions. [2023-12-25 09:20:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:20:04,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 375 [2023-12-25 09:20:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:20:05,135 INFO L225 Difference]: With dead ends: 469918 [2023-12-25 09:20:05,135 INFO L226 Difference]: Without dead ends: 254872 [2023-12-25 09:20:05,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:20:05,228 INFO L413 NwaCegarLoop]: 3151 mSDtfsCounter, 5842 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5842 SdHoareTripleChecker+Valid, 5417 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 09:20:05,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5842 Valid, 5417 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 09:20:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254872 states. [2023-12-25 09:20:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254872 to 227248. [2023-12-25 09:20:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227248 states, 227247 states have (on average 1.640417695283106) internal successors, (372780), 227247 states have internal predecessors, (372780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227248 states to 227248 states and 372780 transitions. [2023-12-25 09:20:09,077 INFO L78 Accepts]: Start accepts. Automaton has 227248 states and 372780 transitions. Word has length 375 [2023-12-25 09:20:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:20:09,079 INFO L495 AbstractCegarLoop]: Abstraction has 227248 states and 372780 transitions. [2023-12-25 09:20:09,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 227248 states and 372780 transitions. [2023-12-25 09:20:09,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-25 09:20:09,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:20:09,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:20:09,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 09:20:09,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:09,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:20:09,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:20:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash 404109737, now seen corresponding path program 1 times [2023-12-25 09:20:09,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:20:09,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049130988] [2023-12-25 09:20:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:20:09,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:09,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:20:09,528 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:20:09,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 09:20:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:20:09,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:20:09,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:20:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:20:10,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:20:10,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:20:10,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049130988] [2023-12-25 09:20:10,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049130988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:20:10,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:20:10,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:20:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271590561] [2023-12-25 09:20:10,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:20:10,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:20:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:20:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:20:10,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:20:10,491 INFO L87 Difference]: Start difference. First operand 227248 states and 372780 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:20:13,103 INFO L93 Difference]: Finished difference Result 668848 states and 1096866 transitions. [2023-12-25 09:20:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:20:13,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 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 379 [2023-12-25 09:20:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:20:14,224 INFO L225 Difference]: With dead ends: 668848 [2023-12-25 09:20:14,224 INFO L226 Difference]: Without dead ends: 444602 [2023-12-25 09:20:14,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:20:14,332 INFO L413 NwaCegarLoop]: 3370 mSDtfsCounter, 5576 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5576 SdHoareTripleChecker+Valid, 5636 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:20:14,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5576 Valid, 5636 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:20:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444602 states. [2023-12-25 09:20:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444602 to 444600. [2023-12-25 09:20:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444600 states, 444599 states have (on average 1.6313149602225825) internal successors, (725281), 444599 states have internal predecessors, (725281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444600 states to 444600 states and 725281 transitions. [2023-12-25 09:20:22,008 INFO L78 Accepts]: Start accepts. Automaton has 444600 states and 725281 transitions. Word has length 379 [2023-12-25 09:20:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:20:22,009 INFO L495 AbstractCegarLoop]: Abstraction has 444600 states and 725281 transitions. [2023-12-25 09:20:22,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:22,009 INFO L276 IsEmpty]: Start isEmpty. Operand 444600 states and 725281 transitions. [2023-12-25 09:20:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 09:20:22,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:20:22,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:20:22,580 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 [2023-12-25 09:20:22,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:22,776 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:20:22,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:20:22,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1443468165, now seen corresponding path program 1 times [2023-12-25 09:20:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:20:22,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753973922] [2023-12-25 09:20:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:20:22,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:22,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:20:22,779 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:20:22,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 09:20:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:20:23,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:20:23,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:20:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:20:23,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:20:23,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:20:23,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753973922] [2023-12-25 09:20:23,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753973922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:20:23,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:20:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:20:23,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437952259] [2023-12-25 09:20:23,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:20:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:20:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:20:23,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:20:23,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:20:23,043 INFO L87 Difference]: Start difference. First operand 444600 states and 725281 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:20:27,361 INFO L93 Difference]: Finished difference Result 1320550 states and 2154871 transitions. [2023-12-25 09:20:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:20:27,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 382 [2023-12-25 09:20:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:20:29,556 INFO L225 Difference]: With dead ends: 1320550 [2023-12-25 09:20:29,557 INFO L226 Difference]: Without dead ends: 882644 [2023-12-25 09:20:29,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:20:29,955 INFO L413 NwaCegarLoop]: 4522 mSDtfsCounter, 2274 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 6860 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 09:20:29,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 6860 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 09:20:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882644 states. [2023-12-25 09:20:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882644 to 449320. [2023-12-25 09:20:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449320 states, 449319 states have (on average 1.6276854528742386) internal successors, (731350), 449319 states have internal predecessors, (731350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449320 states to 449320 states and 731350 transitions. [2023-12-25 09:20:40,020 INFO L78 Accepts]: Start accepts. Automaton has 449320 states and 731350 transitions. Word has length 382 [2023-12-25 09:20:40,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:20:40,020 INFO L495 AbstractCegarLoop]: Abstraction has 449320 states and 731350 transitions. [2023-12-25 09:20:40,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:40,021 INFO L276 IsEmpty]: Start isEmpty. Operand 449320 states and 731350 transitions. [2023-12-25 09:20:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 09:20:40,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:20:40,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:20:40,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 09:20:40,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:40,914 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:20:40,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:20:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1520190982, now seen corresponding path program 1 times [2023-12-25 09:20:40,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:20:40,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219831329] [2023-12-25 09:20:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:20:40,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:40,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:20:40,916 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:20:40,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 09:20:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:20:41,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:20:41,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:20:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:20:42,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:20:42,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:20:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219831329] [2023-12-25 09:20:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219831329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:20:42,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:20:42,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:20:42,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233117517] [2023-12-25 09:20:42,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:20:42,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:20:42,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:20:42,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:20:42,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:20:42,355 INFO L87 Difference]: Start difference. First operand 449320 states and 731350 transitions. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:20:45,507 INFO L93 Difference]: Finished difference Result 738618 states and 1192231 transitions. [2023-12-25 09:20:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:20:45,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 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 [2023-12-25 09:20:45,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:20:46,112 INFO L225 Difference]: With dead ends: 738618 [2023-12-25 09:20:46,113 INFO L226 Difference]: Without dead ends: 449320 [2023-12-25 09:20:46,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:20:46,216 INFO L413 NwaCegarLoop]: 1844 mSDtfsCounter, 3411 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 09:20:46,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3411 Valid, 3692 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 09:20:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449320 states. [2023-12-25 09:20:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449320 to 449320. [2023-12-25 09:20:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449320 states, 449319 states have (on average 1.6212757528615527) internal successors, (728470), 449319 states have internal predecessors, (728470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449320 states to 449320 states and 728470 transitions. [2023-12-25 09:20:54,526 INFO L78 Accepts]: Start accepts. Automaton has 449320 states and 728470 transitions. Word has length 384 [2023-12-25 09:20:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:20:54,526 INFO L495 AbstractCegarLoop]: Abstraction has 449320 states and 728470 transitions. [2023-12-25 09:20:54,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:20:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 449320 states and 728470 transitions. [2023-12-25 09:20:55,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 09:20:55,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:20:55,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:20:55,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 09:20:55,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:55,410 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:20:55,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:20:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1131067312, now seen corresponding path program 1 times [2023-12-25 09:20:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:20:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477268860] [2023-12-25 09:20:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:20:55,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:20:55,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:20:55,412 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:20:55,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 09:20:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:20:55,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:20:55,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:20:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:20:55,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:20:55,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:20:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477268860] [2023-12-25 09:20:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477268860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:20:55,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:20:55,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:20:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891004481] [2023-12-25 09:20:55,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:20:55,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:20:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:20:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:20:55,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:20:55,969 INFO L87 Difference]: Start difference. First operand 449320 states and 728470 transitions. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:21:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:21:00,061 INFO L93 Difference]: Finished difference Result 1318887 states and 2141593 transitions. [2023-12-25 09:21:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:21:00,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 [2023-12-25 09:21:00,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:21:01,437 INFO L225 Difference]: With dead ends: 1318887 [2023-12-25 09:21:01,437 INFO L226 Difference]: Without dead ends: 879800 [2023-12-25 09:21:01,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:21:01,679 INFO L413 NwaCegarLoop]: 3583 mSDtfsCounter, 5163 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5163 SdHoareTripleChecker+Valid, 5834 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:21:01,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5163 Valid, 5834 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:21:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879800 states. [2023-12-25 09:21:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879800 to 879452. [2023-12-25 09:21:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879452 states, 879451 states have (on average 1.615736408281985) internal successors, (1420961), 879451 states have internal predecessors, (1420961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:21:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879452 states to 879452 states and 1420961 transitions. [2023-12-25 09:21:16,732 INFO L78 Accepts]: Start accepts. Automaton has 879452 states and 1420961 transitions. Word has length 384 [2023-12-25 09:21:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:21:16,733 INFO L495 AbstractCegarLoop]: Abstraction has 879452 states and 1420961 transitions. [2023-12-25 09:21:16,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:21:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 879452 states and 1420961 transitions. [2023-12-25 09:21:17,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-25 09:21:17,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:21:17,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:21:17,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 09:21:18,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:21:18,185 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:21:18,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:21:18,186 INFO L85 PathProgramCache]: Analyzing trace with hash -444678678, now seen corresponding path program 1 times [2023-12-25 09:21:18,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:21:18,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708355369] [2023-12-25 09:21:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:21:18,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:21:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:21:18,188 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:21:18,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 09:21:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:21:18,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:21:18,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:21:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:21:18,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:21:18,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:21:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708355369] [2023-12-25 09:21:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708355369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:21:18,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:21:18,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:21:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545218697] [2023-12-25 09:21:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:21:18,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:21:18,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:21:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:21:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:21:18,759 INFO L87 Difference]: Start difference. First operand 879452 states and 1420961 transitions. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:21:28,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:21:28,677 INFO L93 Difference]: Finished difference Result 2982855 states and 4779035 transitions. [2023-12-25 09:21:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:21:28,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 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 385 [2023-12-25 09:21:28,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:21:34,310 INFO L225 Difference]: With dead ends: 2982855 [2023-12-25 09:21:34,310 INFO L226 Difference]: Without dead ends: 2317893 [2023-12-25 09:21:35,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:21:35,650 INFO L413 NwaCegarLoop]: 4862 mSDtfsCounter, 5293 mSDsluCounter, 6576 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5293 SdHoareTripleChecker+Valid, 11438 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:21:35,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5293 Valid, 11438 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:21:37,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317893 states.