/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/recursive-simple/fibo_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:06:57,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:06:57,969 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 06:06:57,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:06:57,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:06:58,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:06:58,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:06:58,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:06:58,003 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:06:58,003 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:06:58,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:06:58,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:06:58,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:06:58,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:06:58,012 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:06:58,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:06:58,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:06:58,013 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:06:58,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:06:58,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:06:58,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:06:58,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:06:58,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:06:58,014 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:06:58,015 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:06:58,015 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:06:58,015 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:06:58,015 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:06:58,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:06:58,015 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:06:58,016 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:06:58,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:06:58,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:06:58,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:06:58,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:06:58,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:06:58,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:06:58,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:06:58,017 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:06:58,017 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:06:58,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:06:58,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:06:58,017 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:06:58,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:06:58,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:06:58,018 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:06:58,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:06:58,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:06:58,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:06:58,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:06:58,255 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:06:58,255 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:06:58,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2023-12-25 06:06:59,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:06:59,612 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:06:59,612 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2023-12-25 06:06:59,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f91bdeeb/a909b6e4d4ce4b3bb022a6e9f9dad229/FLAGb5488cee1 [2023-12-25 06:06:59,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f91bdeeb/a909b6e4d4ce4b3bb022a6e9f9dad229 [2023-12-25 06:06:59,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:06:59,657 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:06:59,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:06:59,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:06:59,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:06:59,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb3c0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59, skipping insertion in model container [2023-12-25 06:06:59,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,674 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:06:59,780 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c[743,756] [2023-12-25 06:06:59,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:06:59,796 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:06:59,807 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c[743,756] [2023-12-25 06:06:59,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:06:59,820 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:06:59,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59 WrapperNode [2023-12-25 06:06:59,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:06:59,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:06:59,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:06:59,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:06:59,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,852 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-25 06:06:59,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:06:59,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:06:59,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:06:59,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:06:59,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,864 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,873 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 06:06:59,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:06:59,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:06:59,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:06:59,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:06:59,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (1/1) ... [2023-12-25 06:06:59,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:06:59,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:06:59,922 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 06:06:59,943 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 06:06:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:06:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:06:59,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:06:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:06:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-12-25 06:06:59,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-12-25 06:07:00,006 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:07:00,009 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:07:00,162 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:07:00,215 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:07:00,215 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:07:00,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:07:00 BoogieIcfgContainer [2023-12-25 06:07:00,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:07:00,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:07:00,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:07:00,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:07:00,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:06:59" (1/3) ... [2023-12-25 06:07:00,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116b9775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:07:00, skipping insertion in model container [2023-12-25 06:07:00,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:06:59" (2/3) ... [2023-12-25 06:07:00,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116b9775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:07:00, skipping insertion in model container [2023-12-25 06:07:00,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:07:00" (3/3) ... [2023-12-25 06:07:00,222 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2023-12-25 06:07:00,236 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:07:00,236 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:07:00,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:07:00,276 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;@1bc4e04b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:07:00,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:07:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:07:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 06:07:00,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:00,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:00,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:00,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:00,289 INFO L85 PathProgramCache]: Analyzing trace with hash -735234106, now seen corresponding path program 1 times [2023-12-25 06:07:00,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780936899] [2023-12-25 06:07:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:07:00,303 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 06:07:00,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:00,305 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 06:07:00,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 06:07:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:00,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:07:00,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:00,456 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 06:07:00,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:07:00,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780936899] [2023-12-25 06:07:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780936899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:07:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:07:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:07:00,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622719014] [2023-12-25 06:07:00,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:07:00,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:07:00,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:00,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:07:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:07:00,492 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:07:00,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:00,582 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2023-12-25 06:07:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:07:00,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-25 06:07:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:00,590 INFO L225 Difference]: With dead ends: 24 [2023-12-25 06:07:00,590 INFO L226 Difference]: Without dead ends: 16 [2023-12-25 06:07:00,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:07:00,595 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:00,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-25 06:07:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-25 06:07:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:07:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-25 06:07:00,631 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2023-12-25 06:07:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:00,631 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-25 06:07:00,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:07:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-25 06:07:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:07:00,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:00,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:00,654 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 06:07:00,835 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 06:07:00,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:00,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -574078710, now seen corresponding path program 1 times [2023-12-25 06:07:00,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:00,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570268091] [2023-12-25 06:07:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:07:00,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:00,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:00,839 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 06:07:00,851 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 06:07:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:00,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:07:00,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:00,905 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 06:07:00,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:07:00,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570268091] [2023-12-25 06:07:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570268091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:07:00,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:07:00,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:07:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452552704] [2023-12-25 06:07:00,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:07:00,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:07:00,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:07:00,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:07:00,912 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:07:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:00,974 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2023-12-25 06:07:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:07:00,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-25 06:07:00,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:00,977 INFO L225 Difference]: With dead ends: 22 [2023-12-25 06:07:00,978 INFO L226 Difference]: Without dead ends: 18 [2023-12-25 06:07:00,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:07:00,979 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:00,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:07:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-25 06:07:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2023-12-25 06:07:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:07:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-25 06:07:00,989 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2023-12-25 06:07:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:00,989 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-25 06:07:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:07:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-25 06:07:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 06:07:00,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:00,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:01,005 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 06:07:01,193 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 06:07:01,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:01,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1482643974, now seen corresponding path program 1 times [2023-12-25 06:07:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273425663] [2023-12-25 06:07:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:07:01,195 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 06:07:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:01,196 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 06:07:01,200 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 06:07:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:01,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:07:01,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:07:01,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:07:01,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273425663] [2023-12-25 06:07:01,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273425663] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:01,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:01,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-25 06:07:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191611601] [2023-12-25 06:07:01,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 06:07:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 06:07:01,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:07:01,560 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:07:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:01,677 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2023-12-25 06:07:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:07:01,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 21 [2023-12-25 06:07:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:01,678 INFO L225 Difference]: With dead ends: 26 [2023-12-25 06:07:01,678 INFO L226 Difference]: Without dead ends: 22 [2023-12-25 06:07:01,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:07:01,679 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:01,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 36 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-25 06:07:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-25 06:07:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-25 06:07:01,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2023-12-25 06:07:01,685 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 21 [2023-12-25 06:07:01,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:01,685 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-12-25 06:07:01,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:07:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-12-25 06:07:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 06:07:01,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:01,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:01,700 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 06:07:01,890 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 06:07:01,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:01,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1283424576, now seen corresponding path program 1 times [2023-12-25 06:07:01,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798684460] [2023-12-25 06:07:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:07:01,892 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 06:07:01,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:01,893 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 06:07:01,895 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 06:07:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:01,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:07:01,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:07:01,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:07:02,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:02,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798684460] [2023-12-25 06:07:02,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798684460] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:02,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:02,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-25 06:07:02,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065990087] [2023-12-25 06:07:02,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:02,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 06:07:02,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:02,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 06:07:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:07:02,078 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:07:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:02,211 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2023-12-25 06:07:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:07:02,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 22 [2023-12-25 06:07:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:02,213 INFO L225 Difference]: With dead ends: 44 [2023-12-25 06:07:02,213 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:07:02,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:07:02,215 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:02,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:07:02,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-25 06:07:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2023-12-25 06:07:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 41 transitions. [2023-12-25 06:07:02,224 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 41 transitions. Word has length 22 [2023-12-25 06:07:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:02,224 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 41 transitions. [2023-12-25 06:07:02,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:07:02,225 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 41 transitions. [2023-12-25 06:07:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 06:07:02,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:02,226 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:02,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-25 06:07:02,433 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 06:07:02,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:02,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:02,435 INFO L85 PathProgramCache]: Analyzing trace with hash -129465146, now seen corresponding path program 2 times [2023-12-25 06:07:02,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:02,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816650501] [2023-12-25 06:07:02,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:02,435 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 06:07:02,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:02,436 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 06:07:02,438 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 06:07:02,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:07:02,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:02,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:07:02,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 06:07:02,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 06:07:02,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:02,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816650501] [2023-12-25 06:07:02,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816650501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:02,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:02,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-25 06:07:02,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995025166] [2023-12-25 06:07:02,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:02,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:07:02,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:07:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:07:02,838 INFO L87 Difference]: Start difference. First operand 26 states and 41 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:07:03,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:03,057 INFO L93 Difference]: Finished difference Result 59 states and 109 transitions. [2023-12-25 06:07:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:07:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) Word has length 33 [2023-12-25 06:07:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:03,060 INFO L225 Difference]: With dead ends: 59 [2023-12-25 06:07:03,060 INFO L226 Difference]: Without dead ends: 35 [2023-12-25 06:07:03,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:07:03,061 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:03,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 46 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-25 06:07:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2023-12-25 06:07:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-25 06:07:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2023-12-25 06:07:03,069 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 33 [2023-12-25 06:07:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:03,069 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2023-12-25 06:07:03,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:07:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2023-12-25 06:07:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-25 06:07:03,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:03,071 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:03,089 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 06:07:03,276 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 06:07:03,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:03,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1440927676, now seen corresponding path program 2 times [2023-12-25 06:07:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:03,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552054907] [2023-12-25 06:07:03,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:03,278 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 06:07:03,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:03,279 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 06:07:03,280 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 06:07:03,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:07:03,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:03,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:07:03,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 06:07:03,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 06:07:03,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:03,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552054907] [2023-12-25 06:07:03,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552054907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:03,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:03,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-25 06:07:03,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120762693] [2023-12-25 06:07:03,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:03,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:07:03,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:07:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:07:03,559 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:07:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:03,662 INFO L93 Difference]: Finished difference Result 66 states and 114 transitions. [2023-12-25 06:07:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:07:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) Word has length 35 [2023-12-25 06:07:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:03,664 INFO L225 Difference]: With dead ends: 66 [2023-12-25 06:07:03,664 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:07:03,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:07:03,665 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:03,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 57 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:07:03,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-12-25 06:07:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2023-12-25 06:07:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2023-12-25 06:07:03,671 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 53 transitions. Word has length 35 [2023-12-25 06:07:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:03,672 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 53 transitions. [2023-12-25 06:07:03,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:07:03,672 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2023-12-25 06:07:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-25 06:07:03,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:03,673 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:03,676 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 06:07:03,876 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 06:07:03,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:03,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1149036726, now seen corresponding path program 3 times [2023-12-25 06:07:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:03,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580213122] [2023-12-25 06:07:03,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:07:03,878 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 06:07:03,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:03,879 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 06:07:03,880 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 06:07:03,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:07:03,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:03,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 06:07:03,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 180 proven. 5 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-12-25 06:07:04,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 136 proven. 15 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-12-25 06:07:04,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580213122] [2023-12-25 06:07:04,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580213122] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:04,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:04,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-25 06:07:04,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58661819] [2023-12-25 06:07:04,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:07:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:07:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:07:04,341 INFO L87 Difference]: Start difference. First operand 36 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-25 06:07:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:04,446 INFO L93 Difference]: Finished difference Result 65 states and 97 transitions. [2023-12-25 06:07:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:07:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 82 [2023-12-25 06:07:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:04,448 INFO L225 Difference]: With dead ends: 65 [2023-12-25 06:07:04,448 INFO L226 Difference]: Without dead ends: 31 [2023-12-25 06:07:04,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:07:04,449 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:04,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-25 06:07:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-25 06:07:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-25 06:07:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-25 06:07:04,454 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 82 [2023-12-25 06:07:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:04,454 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-25 06:07:04,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-25 06:07:04,454 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-25 06:07:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 06:07:04,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:04,455 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:04,460 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 06:07:04,655 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 06:07:04,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:04,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1163688374, now seen corresponding path program 4 times [2023-12-25 06:07:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:04,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611499420] [2023-12-25 06:07:04,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:07:04,657 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 06:07:04,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:04,658 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 06:07:04,662 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 06:07:04,716 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:07:04,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:04,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:07:04,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 154 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-25 06:07:04,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 169 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-25 06:07:05,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:05,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611499420] [2023-12-25 06:07:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611499420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:05,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:05,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 13 [2023-12-25 06:07:05,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186664127] [2023-12-25 06:07:05,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:05,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:07:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:07:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:07:05,069 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 06:07:05,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:05,186 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2023-12-25 06:07:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:07:05,187 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) Word has length 86 [2023-12-25 06:07:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:05,188 INFO L225 Difference]: With dead ends: 71 [2023-12-25 06:07:05,188 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:07:05,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:07:05,189 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:05,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 74 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:07:05,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-12-25 06:07:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-25 06:07:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-25 06:07:05,196 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 86 [2023-12-25 06:07:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:05,196 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-25 06:07:05,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 06:07:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-25 06:07:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 06:07:05,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:05,198 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:05,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:05,422 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 06:07:05,422 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:05,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1652042176, now seen corresponding path program 5 times [2023-12-25 06:07:05,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648125243] [2023-12-25 06:07:05,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:07:05,423 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 06:07:05,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:05,424 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 06:07:05,449 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 06:07:05,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-12-25 06:07:05,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:05,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:07:05,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 310 proven. 265 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-12-25 06:07:05,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 321 proven. 309 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-25 06:07:07,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648125243] [2023-12-25 06:07:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648125243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:07,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:07,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 23 [2023-12-25 06:07:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554177592] [2023-12-25 06:07:07,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:07,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:07:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:07:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:07:07,571 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2023-12-25 06:07:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:07,994 INFO L93 Difference]: Finished difference Result 98 states and 163 transitions. [2023-12-25 06:07:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:07:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) Word has length 136 [2023-12-25 06:07:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:07,996 INFO L225 Difference]: With dead ends: 98 [2023-12-25 06:07:07,996 INFO L226 Difference]: Without dead ends: 61 [2023-12-25 06:07:07,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 242 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:07:07,997 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:07,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 135 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:07:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-25 06:07:08,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2023-12-25 06:07:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (29), 13 states have call predecessors, (29), 10 states have call successors, (29) [2023-12-25 06:07:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-12-25 06:07:08,005 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 136 [2023-12-25 06:07:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:08,005 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-12-25 06:07:08,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2023-12-25 06:07:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-12-25 06:07:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-25 06:07:08,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:08,007 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:08,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:08,209 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 06:07:08,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:08,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1711998528, now seen corresponding path program 6 times [2023-12-25 06:07:08,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:08,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704374472] [2023-12-25 06:07:08,211 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:07:08,211 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 06:07:08,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:08,212 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 06:07:08,213 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 06:07:08,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-25 06:07:08,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:08,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:07:08,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 212 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-25 06:07:08,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 238 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-25 06:07:08,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704374472] [2023-12-25 06:07:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704374472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:08,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:08,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 15 [2023-12-25 06:07:08,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359971297] [2023-12-25 06:07:08,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:08,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 06:07:08,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 06:07:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:07:08,772 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-25 06:07:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:08,955 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2023-12-25 06:07:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:07:08,956 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) Word has length 98 [2023-12-25 06:07:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:08,957 INFO L225 Difference]: With dead ends: 55 [2023-12-25 06:07:08,957 INFO L226 Difference]: Without dead ends: 51 [2023-12-25 06:07:08,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:07:08,958 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:08,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 93 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-25 06:07:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-25 06:07:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (28), 13 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-25 06:07:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2023-12-25 06:07:08,963 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 98 [2023-12-25 06:07:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:08,964 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2023-12-25 06:07:08,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-25 06:07:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2023-12-25 06:07:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-25 06:07:08,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:08,965 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:08,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:09,168 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 06:07:09,169 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:09,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1914823686, now seen corresponding path program 7 times [2023-12-25 06:07:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:09,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176026746] [2023-12-25 06:07:09,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:07:09,170 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 06:07:09,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:09,171 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 06:07:09,171 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 06:07:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:09,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:07:09,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 492 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2023-12-25 06:07:09,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 532 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-12-25 06:07:09,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176026746] [2023-12-25 06:07:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176026746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:09,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 17 [2023-12-25 06:07:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645704036] [2023-12-25 06:07:09,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:09,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:07:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:07:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:07:09,861 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-25 06:07:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:10,119 INFO L93 Difference]: Finished difference Result 119 states and 215 transitions. [2023-12-25 06:07:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:07:10,124 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 161 [2023-12-25 06:07:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:10,125 INFO L225 Difference]: With dead ends: 119 [2023-12-25 06:07:10,125 INFO L226 Difference]: Without dead ends: 70 [2023-12-25 06:07:10,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:07:10,126 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:10,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 122 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:07:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-25 06:07:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2023-12-25 06:07:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (33), 15 states have call predecessors, (33), 12 states have call successors, (33) [2023-12-25 06:07:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2023-12-25 06:07:10,134 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 161 [2023-12-25 06:07:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:10,134 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2023-12-25 06:07:10,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-25 06:07:10,134 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2023-12-25 06:07:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-25 06:07:10,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:10,136 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:10,145 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 06:07:10,340 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 06:07:10,340 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:10,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 409879046, now seen corresponding path program 8 times [2023-12-25 06:07:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:10,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478572213] [2023-12-25 06:07:10,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:10,342 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 06:07:10,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:10,343 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 06:07:10,343 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 06:07:10,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:07:10,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:10,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:07:10,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1373 refuted. 0 times theorem prover too weak. 5244 trivial. 0 not checked. [2023-12-25 06:07:10,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1430 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2023-12-25 06:07:11,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:11,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478572213] [2023-12-25 06:07:11,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478572213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:11,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:11,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 19 [2023-12-25 06:07:11,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613123791] [2023-12-25 06:07:11,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:11,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:07:11,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:07:11,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:07:11,573 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-25 06:07:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:11,913 INFO L93 Difference]: Finished difference Result 136 states and 256 transitions. [2023-12-25 06:07:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:07:11,913 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 325 [2023-12-25 06:07:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:11,914 INFO L225 Difference]: With dead ends: 136 [2023-12-25 06:07:11,915 INFO L226 Difference]: Without dead ends: 79 [2023-12-25 06:07:11,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:07:11,916 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 81 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:11,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 177 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:07:11,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-25 06:07:11,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2023-12-25 06:07:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 14 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (34), 16 states have call predecessors, (34), 14 states have call successors, (34) [2023-12-25 06:07:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2023-12-25 06:07:11,923 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 325 [2023-12-25 06:07:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:11,923 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2023-12-25 06:07:11,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-25 06:07:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2023-12-25 06:07:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-25 06:07:11,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:11,928 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:11,933 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 06:07:12,133 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 06:07:12,134 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:12,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash 48182618, now seen corresponding path program 9 times [2023-12-25 06:07:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:12,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861120674] [2023-12-25 06:07:12,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:07:12,135 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 06:07:12,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:12,136 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 06:07:12,140 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 06:07:12,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-12-25 06:07:12,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:12,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:07:12,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2708 refuted. 0 times theorem prover too weak. 15199 trivial. 0 not checked. [2023-12-25 06:07:12,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2785 refuted. 0 times theorem prover too weak. 15122 trivial. 0 not checked. [2023-12-25 06:07:13,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:13,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861120674] [2023-12-25 06:07:13,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861120674] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:13,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:13,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 21 [2023-12-25 06:07:13,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048980084] [2023-12-25 06:07:13,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:13,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:07:13,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:13,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:07:13,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:07:13,742 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-25 06:07:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:14,147 INFO L93 Difference]: Finished difference Result 152 states and 274 transitions. [2023-12-25 06:07:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:07:14,148 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) Word has length 527 [2023-12-25 06:07:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:14,149 INFO L225 Difference]: With dead ends: 152 [2023-12-25 06:07:14,149 INFO L226 Difference]: Without dead ends: 90 [2023-12-25 06:07:14,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:07:14,150 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 84 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:14,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 198 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:07:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-25 06:07:14,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 71. [2023-12-25 06:07:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (31), 17 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-25 06:07:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-12-25 06:07:14,157 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 527 [2023-12-25 06:07:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:14,158 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-12-25 06:07:14,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-25 06:07:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-12-25 06:07:14,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-12-25 06:07:14,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:14,161 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:14,168 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 06:07:14,366 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 06:07:14,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:14,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -979193692, now seen corresponding path program 10 times [2023-12-25 06:07:14,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:14,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518757215] [2023-12-25 06:07:14,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:07:14,367 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 06:07:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:14,368 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 06:07:14,369 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 06:07:14,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:07:14,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:14,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:07:14,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4035 refuted. 0 times theorem prover too weak. 27022 trivial. 0 not checked. [2023-12-25 06:07:14,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4135 refuted. 0 times theorem prover too weak. 26922 trivial. 0 not checked. [2023-12-25 06:07:16,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:16,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518757215] [2023-12-25 06:07:16,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518757215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:16,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:16,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-25 06:07:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656729398] [2023-12-25 06:07:16,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:07:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:16,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:07:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:07:16,515 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2023-12-25 06:07:17,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:17,011 INFO L93 Difference]: Finished difference Result 171 states and 313 transitions. [2023-12-25 06:07:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:07:17,013 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) Word has length 691 [2023-12-25 06:07:17,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:17,020 INFO L225 Difference]: With dead ends: 171 [2023-12-25 06:07:17,020 INFO L226 Difference]: Without dead ends: 102 [2023-12-25 06:07:17,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:07:17,022 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:17,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 268 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:07:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-25 06:07:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 79. [2023-12-25 06:07:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (35), 19 states have call predecessors, (35), 17 states have call successors, (35) [2023-12-25 06:07:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-25 06:07:17,049 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 691 [2023-12-25 06:07:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:17,051 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-25 06:07:17,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2023-12-25 06:07:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-25 06:07:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2023-12-25 06:07:17,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:17,065 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 143, 88, 88, 88, 88, 88, 88, 55, 34, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:17,095 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 06:07:17,295 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 06:07:17,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:17,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash -111943124, now seen corresponding path program 11 times [2023-12-25 06:07:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:17,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028483091] [2023-12-25 06:07:17,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:07:17,297 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 06:07:17,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:17,298 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 06:07:17,300 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 06:07:22,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 151 check-sat command(s) [2023-12-25 06:07:22,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:22,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 356 conjunts are in the unsatisfiable core [2023-12-25 06:07:22,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 0 proven. 26698 refuted. 0 times theorem prover too weak. 57243 trivial. 0 not checked. [2023-12-25 06:07:23,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 0 proven. 26698 refuted. 0 times theorem prover too weak. 57243 trivial. 0 not checked. [2023-12-25 06:07:32,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028483091] [2023-12-25 06:07:32,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028483091] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:32,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:32,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 40 [2023-12-25 06:07:32,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036095744] [2023-12-25 06:07:32,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:32,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 06:07:32,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 06:07:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:07:32,338 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 40 states, 32 states have (on average 1.15625) internal successors, (37), 13 states have internal predecessors, (37), 9 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (27), 27 states have call predecessors, (27), 9 states have call successors, (27) [2023-12-25 06:07:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:32,896 INFO L93 Difference]: Finished difference Result 122 states and 179 transitions. [2023-12-25 06:07:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 06:07:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 1.15625) internal successors, (37), 13 states have internal predecessors, (37), 9 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (27), 27 states have call predecessors, (27), 9 states have call successors, (27) Word has length 1120 [2023-12-25 06:07:32,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:32,901 INFO L225 Difference]: With dead ends: 122 [2023-12-25 06:07:32,901 INFO L226 Difference]: Without dead ends: 118 [2023-12-25 06:07:32,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2238 GetRequests, 2200 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:07:32,904 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:32,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1267 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:07:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-25 06:07:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2023-12-25 06:07:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 18 states have return successors, (72), 33 states have call predecessors, (72), 24 states have call successors, (72) [2023-12-25 06:07:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 162 transitions. [2023-12-25 06:07:32,923 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 162 transitions. Word has length 1120 [2023-12-25 06:07:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:32,924 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 162 transitions. [2023-12-25 06:07:32,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 1.15625) internal successors, (37), 13 states have internal predecessors, (37), 9 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (27), 27 states have call predecessors, (27), 9 states have call successors, (27) [2023-12-25 06:07:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 162 transitions. [2023-12-25 06:07:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2023-12-25 06:07:32,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:32,939 INFO L195 NwaCegarLoop]: trace histogram [219, 219, 177, 109, 109, 109, 109, 109, 109, 68, 42, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:32,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-25 06:07:33,139 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 06:07:33,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:33,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -753267258, now seen corresponding path program 12 times [2023-12-25 06:07:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:33,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131714575] [2023-12-25 06:07:33,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:07:33,142 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 06:07:33,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:33,143 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 06:07:33,146 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 06:07:40,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 178 check-sat command(s) [2023-12-25 06:07:40,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:40,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:07:40,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 5507 proven. 953 refuted. 0 times theorem prover too weak. 122258 trivial. 0 not checked. [2023-12-25 06:07:40,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 5507 proven. 1003 refuted. 0 times theorem prover too weak. 122208 trivial. 0 not checked. [2023-12-25 06:07:43,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:43,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131714575] [2023-12-25 06:07:43,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131714575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:43,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 17 [2023-12-25 06:07:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554383270] [2023-12-25 06:07:43,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:07:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:43,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:07:43,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:07:43,305 INFO L87 Difference]: Start difference. First operand 107 states and 162 transitions. Second operand has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 9 states have call successors, (16), 1 states have call predecessors, (16), 7 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) [2023-12-25 06:07:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:43,496 INFO L93 Difference]: Finished difference Result 117 states and 176 transitions. [2023-12-25 06:07:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:07:43,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 9 states have call successors, (16), 1 states have call predecessors, (16), 7 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) Word has length 1385 [2023-12-25 06:07:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:43,507 INFO L225 Difference]: With dead ends: 117 [2023-12-25 06:07:43,507 INFO L226 Difference]: Without dead ends: 113 [2023-12-25 06:07:43,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2774 GetRequests, 2753 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:07:43,508 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:43,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 150 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:07:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-25 06:07:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2023-12-25 06:07:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 24 states have call successors, (24), 9 states have call predecessors, (24), 19 states have return successors, (75), 34 states have call predecessors, (75), 24 states have call successors, (75) [2023-12-25 06:07:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 167 transitions. [2023-12-25 06:07:43,518 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 167 transitions. Word has length 1385 [2023-12-25 06:07:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:43,519 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 167 transitions. [2023-12-25 06:07:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 9 states have call successors, (16), 1 states have call predecessors, (16), 7 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) [2023-12-25 06:07:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 167 transitions. [2023-12-25 06:07:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1550 [2023-12-25 06:07:43,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:43,532 INFO L195 NwaCegarLoop]: trace histogram [245, 245, 198, 122, 122, 122, 122, 122, 122, 76, 47, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:43,551 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 06:07:43,747 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 06:07:43,747 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:43,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2129517946, now seen corresponding path program 13 times [2023-12-25 06:07:43,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:43,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122741014] [2023-12-25 06:07:43,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:07:43,749 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 06:07:43,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:43,750 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 06:07:43,776 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 06:07:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:45,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:07:45,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 161206 backedges. 6263 proven. 5013 refuted. 0 times theorem prover too weak. 149930 trivial. 0 not checked. [2023-12-25 06:07:45,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 161206 backedges. 6263 proven. 5113 refuted. 0 times theorem prover too weak. 149830 trivial. 0 not checked. [2023-12-25 06:07:48,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:48,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122741014] [2023-12-25 06:07:48,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122741014] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:48,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:48,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 22 [2023-12-25 06:07:48,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740732237] [2023-12-25 06:07:48,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:48,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 06:07:48,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:48,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 06:07:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-12-25 06:07:48,638 INFO L87 Difference]: Start difference. First operand 110 states and 167 transitions. Second operand has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 22 states have internal predecessors, (60), 19 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 13 states have call predecessors, (30), 19 states have call successors, (30) [2023-12-25 06:07:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:50,008 INFO L93 Difference]: Finished difference Result 286 states and 601 transitions. [2023-12-25 06:07:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-25 06:07:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 22 states have internal predecessors, (60), 19 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 13 states have call predecessors, (30), 19 states have call successors, (30) Word has length 1549 [2023-12-25 06:07:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:50,013 INFO L225 Difference]: With dead ends: 286 [2023-12-25 06:07:50,013 INFO L226 Difference]: Without dead ends: 178 [2023-12-25 06:07:50,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3155 GetRequests, 3076 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1701, Invalid=4779, Unknown=0, NotChecked=0, Total=6480 [2023-12-25 06:07:50,016 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 305 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:50,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 91 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:07:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-25 06:07:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2023-12-25 06:07:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 76 states have (on average 1.131578947368421) internal successors, (86), 75 states have internal predecessors, (86), 25 states have call successors, (25), 17 states have call predecessors, (25), 12 states have return successors, (81), 21 states have call predecessors, (81), 25 states have call successors, (81) [2023-12-25 06:07:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 192 transitions. [2023-12-25 06:07:50,031 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 192 transitions. Word has length 1549 [2023-12-25 06:07:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:50,032 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 192 transitions. [2023-12-25 06:07:50,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 22 states have internal predecessors, (60), 19 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 13 states have call predecessors, (30), 19 states have call successors, (30) [2023-12-25 06:07:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 192 transitions. [2023-12-25 06:07:50,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1815 [2023-12-25 06:07:50,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:50,049 INFO L195 NwaCegarLoop]: trace histogram [287, 287, 232, 143, 143, 143, 143, 143, 143, 89, 55, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:50,066 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 (18)] Ended with exit code 0 [2023-12-25 06:07:50,265 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 06:07:50,266 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:50,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1621089546, now seen corresponding path program 14 times [2023-12-25 06:07:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569746864] [2023-12-25 06:07:50,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:50,268 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 06:07:50,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:50,269 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 06:07:50,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 06:07:50,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:07:50,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:50,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:07:51,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 221419 backedges. 1977 proven. 12732 refuted. 0 times theorem prover too weak. 206710 trivial. 0 not checked. [2023-12-25 06:07:51,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 221419 backedges. 1977 proven. 12858 refuted. 0 times theorem prover too weak. 206584 trivial. 0 not checked. [2023-12-25 06:07:55,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:55,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569746864] [2023-12-25 06:07:55,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569746864] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:55,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:55,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23] total 24 [2023-12-25 06:07:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172682917] [2023-12-25 06:07:55,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:55,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:07:55,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:07:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:07:55,244 INFO L87 Difference]: Start difference. First operand 114 states and 192 transitions. Second operand has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 24 states have internal predecessors, (65), 22 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (32), 12 states have call predecessors, (32), 22 states have call successors, (32) [2023-12-25 06:07:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:56,977 INFO L93 Difference]: Finished difference Result 323 states and 593 transitions. [2023-12-25 06:07:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-25 06:07:56,978 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 24 states have internal predecessors, (65), 22 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (32), 12 states have call predecessors, (32), 22 states have call successors, (32) Word has length 1814 [2023-12-25 06:07:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:56,981 INFO L225 Difference]: With dead ends: 323 [2023-12-25 06:07:56,981 INFO L226 Difference]: Without dead ends: 0 [2023-12-25 06:07:56,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3708 GetRequests, 3604 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3716 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2658, Invalid=8472, Unknown=0, NotChecked=0, Total=11130 [2023-12-25 06:07:56,986 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 484 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:56,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 52 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:07:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-25 06:07:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-25 06:07:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states 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 06:07:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-25 06:07:56,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1814 [2023-12-25 06:07:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:56,987 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-25 06:07:56,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 24 states have internal predecessors, (65), 22 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (32), 12 states have call predecessors, (32), 22 states have call successors, (32) [2023-12-25 06:07:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-25 06:07:56,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-25 06:07:56,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:07:57,027 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 06:07:57,204 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 06:07:57,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-25 06:07:58,145 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-25 06:07:58,145 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-12-25 06:07:58,145 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2023-12-25 06:07:58,145 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (= |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) [2023-12-25 06:07:58,146 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-12-25 06:07:58,146 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2023-12-25 06:07:58,146 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2023-12-25 06:07:58,146 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-25 06:07:58,146 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2023-12-25 06:07:58,146 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (not (= |fibo_#in~n| (_ bv1 32))) (not (bvslt fibo_~n (_ bv1 32))) (= |fibo_#in~n| fibo_~n)) [2023-12-25 06:07:58,146 INFO L895 garLoopResultBuilder]: At program point L13-1(line 13) the Hoare annotation is: (let ((.cse1 (= |fibo_#in~n| (_ bv3 32))) (.cse18 (= (_ bv2 32) fibo_~n)) (.cse2 (= |fibo_#in~n| (_ bv5 32))) (.cse3 (= |fibo_#in~n| (_ bv7 32))) (.cse4 (= |fibo_#in~n| (_ bv8 32))) (.cse16 (= |fibo_#in~n| (_ bv9 32))) (.cse19 (= (_ bv4 32) |fibo_#in~n|)) (.cse17 (= |fibo_#in~n| (_ bv6 32)))) (let ((.cse5 (not .cse17)) (.cse6 (not .cse19)) (.cse7 (not .cse16)) (.cse8 (not .cse4)) (.cse9 (not (= (_ bv1 32) fibo_~n))) (.cse10 (not (bvslt fibo_~n (_ bv1 32)))) (.cse11 (not .cse3)) (.cse12 (= |fibo_#in~n| fibo_~n)) (.cse13 (not .cse2)) (.cse14 (not .cse18)) (.cse15 (not .cse1)) (.cse0 (= |fibo_#t~ret4| (_ bv1 32)))) (or (and .cse0 .cse1 (= (_ bv3 32) fibo_~n)) (and (= (_ bv5 32) fibo_~n) .cse2 (= (_ bv3 32) |fibo_#t~ret4|)) (and (= (_ bv7 32) fibo_~n) (= (_ bv8 32) |fibo_#t~ret4|) .cse3) (and .cse4 (= (_ bv13 32) |fibo_#t~ret4|) (= (_ bv8 32) fibo_~n)) (and .cse5 (= (_ bv34 32) |fibo_#t~ret4|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (not (= |fibo_#in~n| (_ bv10 32)))) (and .cse16 (= |fibo_#t~ret4| (_ bv21 32)) (= fibo_~n (_ bv9 32))) (and .cse17 (= |fibo_#t~ret4| (_ bv5 32)) (= (_ bv6 32) fibo_~n)) (and .cse0 (= |fibo_#in~n| (_ bv2 32)) .cse18) (and (= (_ bv2 32) |fibo_#t~ret4|) (= (_ bv4 32) fibo_~n) .cse19)))) [2023-12-25 06:07:58,146 INFO L899 garLoopResultBuilder]: For program point L13-2(line 13) no Hoare annotation was computed. [2023-12-25 06:07:58,146 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2023-12-25 06:07:58,146 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 15) the Hoare annotation is: true [2023-12-25 06:07:58,146 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2023-12-25 06:07:58,147 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2023-12-25 06:07:58,149 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1] [2023-12-25 06:07:58,150 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:07:58,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:07:58 BoogieIcfgContainer [2023-12-25 06:07:58,153 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:07:58,153 INFO L158 Benchmark]: Toolchain (without parser) took 58496.20ms. Allocated memory was 194.0MB in the beginning and 512.8MB in the end (delta: 318.8MB). Free memory was 131.3MB in the beginning and 393.0MB in the end (delta: -261.7MB). Peak memory consumption was 295.9MB. Max. memory is 8.0GB. [2023-12-25 06:07:58,153 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 194.0MB. Free memory was 143.1MB in the beginning and 143.0MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:07:58,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.98ms. Allocated memory is still 194.0MB. Free memory was 131.1MB in the beginning and 120.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 06:07:58,153 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.82ms. Allocated memory is still 194.0MB. Free memory was 120.5MB in the beginning and 119.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:07:58,153 INFO L158 Benchmark]: Boogie Preprocessor took 26.88ms. Allocated memory is still 194.0MB. Free memory was 119.0MB in the beginning and 117.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:07:58,154 INFO L158 Benchmark]: RCFGBuilder took 334.17ms. Allocated memory was 194.0MB in the beginning and 246.4MB in the end (delta: 52.4MB). Free memory was 117.2MB in the beginning and 211.8MB in the end (delta: -94.6MB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. [2023-12-25 06:07:58,154 INFO L158 Benchmark]: TraceAbstraction took 57934.99ms. Allocated memory was 246.4MB in the beginning and 512.8MB in the end (delta: 266.3MB). Free memory was 211.1MB in the beginning and 393.0MB in the end (delta: -181.9MB). Peak memory consumption was 322.5MB. Max. memory is 8.0GB. [2023-12-25 06:07:58,155 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 194.0MB. Free memory was 143.1MB in the beginning and 143.0MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 164.98ms. Allocated memory is still 194.0MB. Free memory was 131.1MB in the beginning and 120.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.82ms. Allocated memory is still 194.0MB. Free memory was 120.5MB in the beginning and 119.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.88ms. Allocated memory is still 194.0MB. Free memory was 119.0MB in the beginning and 117.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 334.17ms. Allocated memory was 194.0MB in the beginning and 246.4MB in the end (delta: 52.4MB). Free memory was 117.2MB in the beginning and 211.8MB in the end (delta: -94.6MB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. * TraceAbstraction took 57934.99ms. Allocated memory was 246.4MB in the beginning and 512.8MB in the end (delta: 266.3MB). Free memory was 211.1MB in the beginning and 393.0MB in the end (delta: -181.9MB). Peak memory consumption was 322.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.9s, OverallIterations: 18, TraceHistogramMax: 287, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.1s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1459 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1342 mSDsluCounter, 2897 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2503 mSDsCounter, 1238 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5147 IncrementalHoareTripleChecker+Invalid, 6385 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1238 mSolverCounterUnsat, 394 mSDtfsCounter, 5147 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16373 GetRequests, 15896 SyntacticMatches, 7 SemanticMatches, 470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6385 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=17, InterpolantAutomatonStates: 347, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 178 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 499 PreInvPairs, 673 NumberOfFragments, 192 HoareAnnotationTreeSize, 499 FormulaSimplifications, 18119 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 4 FormulaSimplificationsInter, 9151 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 14.5s SatisfiabilityAnalysisTime, 30.2s InterpolantComputationTime, 8104 NumberOfCodeBlocks, 7589 NumberOfCodeBlocksAsserted, 409 NumberOfCheckSat, 16155 ConstructedInterpolants, 0 QuantifiedInterpolants, 22819 SizeOfPredicates, 88 NumberOfNonLiveVariables, 10793 ConjunctsInSsa, 565 ConjunctsInUnsatCore, 34 InterpolantComputations, 2 PerfectInterpolantSequences, 1202366/1312416 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-25 06:07:58,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...