/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 [2023-12-16 17:44:13,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:44:13,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:44:13,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:44:13,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:44:13,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:44:13,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:44:13,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:44:13,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:44:13,952 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:44:13,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:44:13,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:44:13,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:44:13,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:44:13,954 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:44:13,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:44:13,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:44:13,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:44:13,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:44:13,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:44:13,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:44:13,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:44:13,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:44:13,957 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:44:13,957 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:44:13,957 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:44:13,957 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:44:13,957 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:44:13,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:44:13,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:44:13,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:44:13,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:44:13,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:44:13,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:44:13,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:44:13,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:44:13,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:44:13,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:44:13,959 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:44:13,959 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:44:13,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:44:13,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:44:13,960 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:44:13,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:44:13,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:44:13,960 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:44:13,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:44:14,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:44:14,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:44:14,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:44:14,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:44:14,162 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:44:14,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2023-12-16 17:44:15,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:44:15,369 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:44:15,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2023-12-16 17:44:15,375 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c718b3703/84da9ab5779c433286db31b97e3ef3e6/FLAG596db90aa [2023-12-16 17:44:15,385 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c718b3703/84da9ab5779c433286db31b97e3ef3e6 [2023-12-16 17:44:15,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:44:15,388 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:44:15,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:44:15,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:44:15,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:44:15,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4ff632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15, skipping insertion in model container [2023-12-16 17:44:15,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,406 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:44:15,521 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] [2023-12-16 17:44:15,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:44:15,538 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:44:15,549 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] [2023-12-16 17:44:15,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:44:15,562 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:44:15,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15 WrapperNode [2023-12-16 17:44:15,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:44:15,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:44:15,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:44:15,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:44:15,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,596 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-16 17:44:15,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:44:15,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:44:15,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:44:15,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:44:15,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,619 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]. [2023-12-16 17:44:15,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,623 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:44:15,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:44:15,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:44:15,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:44:15,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (1/1) ... [2023-12-16 17:44:15,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:44:15,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:44:15,662 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) [2023-12-16 17:44:15,671 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 [2023-12-16 17:44:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:44:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:44:15,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:44:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:44:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-12-16 17:44:15,684 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-12-16 17:44:15,724 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:44:15,725 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:44:15,840 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:44:15,867 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:44:15,867 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:44:15,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:44:15 BoogieIcfgContainer [2023-12-16 17:44:15,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:44:15,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:44:15,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:44:15,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:44:15,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:44:15" (1/3) ... [2023-12-16 17:44:15,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aa2ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:44:15, skipping insertion in model container [2023-12-16 17:44:15,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:15" (2/3) ... [2023-12-16 17:44:15,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aa2ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:44:15, skipping insertion in model container [2023-12-16 17:44:15,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:44:15" (3/3) ... [2023-12-16 17:44:15,873 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2023-12-16 17:44:15,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:44:15,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:44:15,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:44:15,924 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;@7ca9ba30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:44:15,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:44:15,927 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) [2023-12-16 17:44:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 17:44:15,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:15,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:15,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:15,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:15,944 INFO L85 PathProgramCache]: Analyzing trace with hash -735234106, now seen corresponding path program 1 times [2023-12-16 17:44:15,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:15,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630434279] [2023-12-16 17:44:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:44:15,952 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 [2023-12-16 17:44:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:15,954 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) [2023-12-16 17:44:15,961 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 [2023-12-16 17:44:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:15,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:44:15,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:44:16,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:44:16,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:16,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630434279] [2023-12-16 17:44:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630434279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:44:16,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:44:16,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:44:16,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819116670] [2023-12-16 17:44:16,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:44:16,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:44:16,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:44:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:44:16,098 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) [2023-12-16 17:44:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:16,155 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2023-12-16 17:44:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:44:16,157 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 [2023-12-16 17:44:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:16,162 INFO L225 Difference]: With dead ends: 24 [2023-12-16 17:44:16,162 INFO L226 Difference]: Without dead ends: 16 [2023-12-16 17:44:16,164 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 [2023-12-16 17:44:16,167 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:16,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:44:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-16 17:44:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-16 17:44:16,194 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) [2023-12-16 17:44:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-16 17:44:16,196 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2023-12-16 17:44:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:16,196 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-16 17:44:16,196 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) [2023-12-16 17:44:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-16 17:44:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 17:44:16,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:16,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:16,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 17:44:16,399 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 [2023-12-16 17:44:16,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:16,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash -574078710, now seen corresponding path program 1 times [2023-12-16 17:44:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:16,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058460239] [2023-12-16 17:44:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:44:16,404 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 [2023-12-16 17:44:16,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:16,405 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) [2023-12-16 17:44:16,415 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 [2023-12-16 17:44:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:16,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:44:16,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:44:16,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:44:16,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:16,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058460239] [2023-12-16 17:44:16,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058460239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:44:16,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:44:16,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:44:16,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455199638] [2023-12-16 17:44:16,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:44:16,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:44:16,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:16,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:44:16,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:44:16,534 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) [2023-12-16 17:44:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:16,600 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2023-12-16 17:44:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:44:16,600 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 [2023-12-16 17:44:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:16,601 INFO L225 Difference]: With dead ends: 22 [2023-12-16 17:44:16,601 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 17:44:16,601 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 [2023-12-16 17:44:16,602 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:16,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:44:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 17:44:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2023-12-16 17:44:16,606 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) [2023-12-16 17:44:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-16 17:44:16,607 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2023-12-16 17:44:16,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:16,607 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-16 17:44:16,607 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) [2023-12-16 17:44:16,608 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-16 17:44:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 17:44:16,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:16,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:16,623 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 [2023-12-16 17:44:16,809 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 [2023-12-16 17:44:16,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:16,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1482643974, now seen corresponding path program 1 times [2023-12-16 17:44:16,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:16,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810327913] [2023-12-16 17:44:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:44:16,812 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 [2023-12-16 17:44:16,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:16,813 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) [2023-12-16 17:44:16,814 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 [2023-12-16 17:44:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:16,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:44:16,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:44:16,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 17:44:17,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810327913] [2023-12-16 17:44:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810327913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:17,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-16 17:44:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605652002] [2023-12-16 17:44:17,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 17:44:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 17:44:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:44:17,187 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) [2023-12-16 17:44:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:17,284 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2023-12-16 17:44:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:44:17,285 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 [2023-12-16 17:44:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:17,286 INFO L225 Difference]: With dead ends: 26 [2023-12-16 17:44:17,286 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 17:44:17,286 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 [2023-12-16 17:44:17,287 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 [2023-12-16 17:44:17,288 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] [2023-12-16 17:44:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 17:44:17,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-16 17:44:17,292 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) [2023-12-16 17:44:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2023-12-16 17:44:17,293 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 21 [2023-12-16 17:44:17,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:17,293 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-12-16 17:44:17,293 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) [2023-12-16 17:44:17,293 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-12-16 17:44:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 17:44:17,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:17,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:17,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 17:44:17,495 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 [2023-12-16 17:44:17,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:17,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1283424576, now seen corresponding path program 1 times [2023-12-16 17:44:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:17,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231198641] [2023-12-16 17:44:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:44:17,500 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 [2023-12-16 17:44:17,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:17,501 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) [2023-12-16 17:44:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:17,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:44:17,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:17,523 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 [2023-12-16 17:44:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 17:44:17,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 17:44:17,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231198641] [2023-12-16 17:44:17,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231198641] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:17,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:17,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-16 17:44:17,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921152640] [2023-12-16 17:44:17,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:17,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 17:44:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:17,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 17:44:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:44:17,724 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) [2023-12-16 17:44:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:17,783 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2023-12-16 17:44:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:44:17,784 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 [2023-12-16 17:44:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:17,785 INFO L225 Difference]: With dead ends: 44 [2023-12-16 17:44:17,785 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 17:44:17,786 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 [2023-12-16 17:44:17,786 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:17,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:44:17,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 17:44:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-16 17:44:17,792 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) [2023-12-16 17:44:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 41 transitions. [2023-12-16 17:44:17,793 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 41 transitions. Word has length 22 [2023-12-16 17:44:17,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:17,793 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 41 transitions. [2023-12-16 17:44:17,793 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) [2023-12-16 17:44:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 41 transitions. [2023-12-16 17:44:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 17:44:17,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:17,795 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:17,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:17,996 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 [2023-12-16 17:44:17,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:17,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:17,997 INFO L85 PathProgramCache]: Analyzing trace with hash -129465146, now seen corresponding path program 2 times [2023-12-16 17:44:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:17,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973803121] [2023-12-16 17:44:17,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:44:17,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:17,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:17,999 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) [2023-12-16 17:44:18,012 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 [2023-12-16 17:44:18,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:44:18,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:18,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:44:18,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 17:44:18,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 17:44:18,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:18,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973803121] [2023-12-16 17:44:18,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973803121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:18,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:18,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-16 17:44:18,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226584831] [2023-12-16 17:44:18,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:18,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 17:44:18,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:18,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 17:44:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:44:18,339 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) [2023-12-16 17:44:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:18,488 INFO L93 Difference]: Finished difference Result 59 states and 109 transitions. [2023-12-16 17:44:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:44:18,489 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 [2023-12-16 17:44:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:18,490 INFO L225 Difference]: With dead ends: 59 [2023-12-16 17:44:18,490 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 17:44:18,491 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 [2023-12-16 17:44:18,491 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 [2023-12-16 17:44:18,491 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] [2023-12-16 17:44:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 17:44:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2023-12-16 17:44:18,496 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) [2023-12-16 17:44:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2023-12-16 17:44:18,496 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 33 [2023-12-16 17:44:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:18,497 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2023-12-16 17:44:18,497 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) [2023-12-16 17:44:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2023-12-16 17:44:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 17:44:18,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:18,501 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:18,503 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 [2023-12-16 17:44:18,702 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 [2023-12-16 17:44:18,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:18,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1440927676, now seen corresponding path program 2 times [2023-12-16 17:44:18,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:18,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796162816] [2023-12-16 17:44:18,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:44:18,704 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 [2023-12-16 17:44:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:18,705 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) [2023-12-16 17:44:18,706 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 [2023-12-16 17:44:18,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:44:18,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:18,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:44:18,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 17:44:18,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 17:44:19,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796162816] [2023-12-16 17:44:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796162816] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:19,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-16 17:44:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220405714] [2023-12-16 17:44:19,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 17:44:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 17:44:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:44:19,021 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) [2023-12-16 17:44:19,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:19,124 INFO L93 Difference]: Finished difference Result 66 states and 114 transitions. [2023-12-16 17:44:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:44:19,124 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 [2023-12-16 17:44:19,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:19,128 INFO L225 Difference]: With dead ends: 66 [2023-12-16 17:44:19,128 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 17:44:19,131 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 [2023-12-16 17:44:19,134 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 [2023-12-16 17:44:19,135 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] [2023-12-16 17:44:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 17:44:19,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-12-16 17:44:19,144 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) [2023-12-16 17:44:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2023-12-16 17:44:19,147 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 53 transitions. Word has length 35 [2023-12-16 17:44:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:19,147 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 53 transitions. [2023-12-16 17:44:19,147 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) [2023-12-16 17:44:19,147 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2023-12-16 17:44:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 17:44:19,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:19,153 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:19,158 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 [2023-12-16 17:44:19,355 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 [2023-12-16 17:44:19,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:19,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1149036726, now seen corresponding path program 3 times [2023-12-16 17:44:19,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:19,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478861000] [2023-12-16 17:44:19,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:44:19,358 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 [2023-12-16 17:44:19,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:19,359 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) [2023-12-16 17:44:19,377 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 [2023-12-16 17:44:19,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 17:44:19,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:19,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:44:19,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 180 proven. 5 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-12-16 17:44:19,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 136 proven. 15 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-12-16 17:44:19,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:19,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478861000] [2023-12-16 17:44:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478861000] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:19,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-16 17:44:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312821150] [2023-12-16 17:44:19,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:44:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:44:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:44:19,842 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) [2023-12-16 17:44:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:19,940 INFO L93 Difference]: Finished difference Result 65 states and 97 transitions. [2023-12-16 17:44:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:44:19,943 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 [2023-12-16 17:44:19,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:19,944 INFO L225 Difference]: With dead ends: 65 [2023-12-16 17:44:19,944 INFO L226 Difference]: Without dead ends: 31 [2023-12-16 17:44:19,944 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 [2023-12-16 17:44:19,945 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 [2023-12-16 17:44:19,945 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] [2023-12-16 17:44:19,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-16 17:44:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-16 17:44:19,948 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) [2023-12-16 17:44:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-16 17:44:19,948 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 82 [2023-12-16 17:44:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:19,949 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-16 17:44:19,949 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) [2023-12-16 17:44:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-16 17:44:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 17:44:19,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:19,949 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:19,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:20,151 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 [2023-12-16 17:44:20,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:20,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1163688374, now seen corresponding path program 4 times [2023-12-16 17:44:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214966741] [2023-12-16 17:44:20,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:44:20,152 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 [2023-12-16 17:44:20,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:20,154 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) [2023-12-16 17:44:20,168 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 [2023-12-16 17:44:20,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:44:20,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:20,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:44:20,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 154 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-16 17:44:20,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 169 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-16 17:44:20,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:20,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214966741] [2023-12-16 17:44:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214966741] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:20,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:20,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 13 [2023-12-16 17:44:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22047520] [2023-12-16 17:44:20,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:20,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 17:44:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 17:44:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-16 17:44:20,574 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) [2023-12-16 17:44:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:20,688 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2023-12-16 17:44:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:44:20,689 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 [2023-12-16 17:44:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:20,689 INFO L225 Difference]: With dead ends: 71 [2023-12-16 17:44:20,689 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 17:44:20,690 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 [2023-12-16 17:44:20,690 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 [2023-12-16 17:44:20,690 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] [2023-12-16 17:44:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 17:44:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-12-16 17:44:20,694 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) [2023-12-16 17:44:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-16 17:44:20,694 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 86 [2023-12-16 17:44:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:20,695 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-16 17:44:20,695 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) [2023-12-16 17:44:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-16 17:44:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 17:44:20,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:20,696 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:20,700 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:20,898 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 [2023-12-16 17:44:20,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:20,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:20,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1652042176, now seen corresponding path program 5 times [2023-12-16 17:44:20,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:20,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391011122] [2023-12-16 17:44:20,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:44:20,899 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 [2023-12-16 17:44:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:20,900 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) [2023-12-16 17:44:20,922 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 [2023-12-16 17:44:20,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-12-16 17:44:20,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:20,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:44:20,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 310 proven. 265 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-12-16 17:44:21,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 321 proven. 309 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-16 17:44:22,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:22,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391011122] [2023-12-16 17:44:22,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391011122] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:22,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:22,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 23 [2023-12-16 17:44:22,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105005784] [2023-12-16 17:44:22,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:22,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 17:44:22,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:22,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 17:44:22,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:44:22,715 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) [2023-12-16 17:44:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:23,089 INFO L93 Difference]: Finished difference Result 98 states and 163 transitions. [2023-12-16 17:44:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 17:44:23,090 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 [2023-12-16 17:44:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:23,090 INFO L225 Difference]: With dead ends: 98 [2023-12-16 17:44:23,090 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 17:44:23,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 242 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2023-12-16 17:44:23,091 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:23,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 135 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:44:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 17:44:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2023-12-16 17:44:23,098 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) [2023-12-16 17:44:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-12-16 17:44:23,099 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 136 [2023-12-16 17:44:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:23,099 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-12-16 17:44:23,099 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) [2023-12-16 17:44:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-12-16 17:44:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 17:44:23,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:23,100 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:23,105 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 [2023-12-16 17:44:23,302 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 [2023-12-16 17:44:23,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:23,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1711998528, now seen corresponding path program 6 times [2023-12-16 17:44:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:23,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729781441] [2023-12-16 17:44:23,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:44:23,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:23,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:23,305 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) [2023-12-16 17:44:23,306 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 [2023-12-16 17:44:23,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-16 17:44:23,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:23,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:44:23,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 212 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-16 17:44:23,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 238 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-16 17:44:23,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:23,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729781441] [2023-12-16 17:44:23,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729781441] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:23,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:23,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 15 [2023-12-16 17:44:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406024110] [2023-12-16 17:44:23,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:23,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 17:44:23,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 17:44:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:44:23,804 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) [2023-12-16 17:44:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:23,969 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2023-12-16 17:44:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:44:23,969 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 [2023-12-16 17:44:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:23,970 INFO L225 Difference]: With dead ends: 55 [2023-12-16 17:44:23,970 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 17:44:23,970 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 [2023-12-16 17:44:23,971 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 [2023-12-16 17:44:23,971 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] [2023-12-16 17:44:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 17:44:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-16 17:44:23,976 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) [2023-12-16 17:44:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2023-12-16 17:44:23,977 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 98 [2023-12-16 17:44:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:23,977 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2023-12-16 17:44:23,977 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) [2023-12-16 17:44:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2023-12-16 17:44:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-16 17:44:23,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:23,978 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:23,981 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 [2023-12-16 17:44:24,180 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 [2023-12-16 17:44:24,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:24,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:24,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1914823686, now seen corresponding path program 7 times [2023-12-16 17:44:24,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:24,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745073399] [2023-12-16 17:44:24,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:44:24,181 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 [2023-12-16 17:44:24,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:24,182 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) [2023-12-16 17:44:24,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 17:44:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:24,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 17:44:24,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 492 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2023-12-16 17:44:24,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 532 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-12-16 17:44:24,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:24,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745073399] [2023-12-16 17:44:24,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745073399] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:24,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:24,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 17 [2023-12-16 17:44:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9259056] [2023-12-16 17:44:24,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:24,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:44:24,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:44:24,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:44:24,833 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) [2023-12-16 17:44:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:25,061 INFO L93 Difference]: Finished difference Result 119 states and 215 transitions. [2023-12-16 17:44:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 17:44:25,062 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 [2023-12-16 17:44:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:25,063 INFO L225 Difference]: With dead ends: 119 [2023-12-16 17:44:25,063 INFO L226 Difference]: Without dead ends: 70 [2023-12-16 17:44:25,063 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 [2023-12-16 17:44:25,064 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:25,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 122 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:44:25,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-16 17:44:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2023-12-16 17:44:25,070 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) [2023-12-16 17:44:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2023-12-16 17:44:25,071 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 161 [2023-12-16 17:44:25,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:25,071 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2023-12-16 17:44:25,071 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) [2023-12-16 17:44:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2023-12-16 17:44:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-16 17:44:25,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:25,073 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:25,082 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 [2023-12-16 17:44:25,282 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 [2023-12-16 17:44:25,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:25,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash 409879046, now seen corresponding path program 8 times [2023-12-16 17:44:25,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:25,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437776672] [2023-12-16 17:44:25,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:44:25,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:25,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:25,285 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) [2023-12-16 17:44:25,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 17:44:25,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:44:25,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:25,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:44:25,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1373 refuted. 0 times theorem prover too weak. 5244 trivial. 0 not checked. [2023-12-16 17:44:25,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1430 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2023-12-16 17:44:26,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:26,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437776672] [2023-12-16 17:44:26,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437776672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:26,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:26,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 19 [2023-12-16 17:44:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963301536] [2023-12-16 17:44:26,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:44:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:44:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:44:26,493 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) [2023-12-16 17:44:26,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:26,825 INFO L93 Difference]: Finished difference Result 136 states and 256 transitions. [2023-12-16 17:44:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:44:26,825 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 [2023-12-16 17:44:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:26,827 INFO L225 Difference]: With dead ends: 136 [2023-12-16 17:44:26,827 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 17:44:26,828 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 [2023-12-16 17:44:26,828 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 81 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:26,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 177 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:44:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 17:44:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2023-12-16 17:44:26,843 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) [2023-12-16 17:44:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2023-12-16 17:44:26,844 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 325 [2023-12-16 17:44:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:26,846 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2023-12-16 17:44:26,846 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) [2023-12-16 17:44:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2023-12-16 17:44:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-16 17:44:26,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:26,853 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:26,860 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 [2023-12-16 17:44:27,058 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 [2023-12-16 17:44:27,058 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:27,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:27,060 INFO L85 PathProgramCache]: Analyzing trace with hash 48182618, now seen corresponding path program 9 times [2023-12-16 17:44:27,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:27,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545153332] [2023-12-16 17:44:27,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:44:27,060 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 [2023-12-16 17:44:27,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:27,148 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) [2023-12-16 17:44:27,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 17:44:27,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-12-16 17:44:27,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:27,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 17:44:27,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2708 refuted. 0 times theorem prover too weak. 15199 trivial. 0 not checked. [2023-12-16 17:44:27,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2785 refuted. 0 times theorem prover too weak. 15122 trivial. 0 not checked. [2023-12-16 17:44:28,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:28,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545153332] [2023-12-16 17:44:28,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545153332] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:28,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:28,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 21 [2023-12-16 17:44:28,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34025443] [2023-12-16 17:44:28,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:28,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 17:44:28,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:28,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 17:44:28,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:44:28,971 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) [2023-12-16 17:44:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:29,331 INFO L93 Difference]: Finished difference Result 152 states and 274 transitions. [2023-12-16 17:44:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 17:44:29,332 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 [2023-12-16 17:44:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:29,333 INFO L225 Difference]: With dead ends: 152 [2023-12-16 17:44:29,333 INFO L226 Difference]: Without dead ends: 90 [2023-12-16 17:44:29,334 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 [2023-12-16 17:44:29,335 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 84 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:29,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 198 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:44:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-16 17:44:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 71. [2023-12-16 17:44:29,341 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) [2023-12-16 17:44:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-12-16 17:44:29,341 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 527 [2023-12-16 17:44:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:29,342 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-12-16 17:44:29,342 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) [2023-12-16 17:44:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-12-16 17:44:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-12-16 17:44:29,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:29,350 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:29,357 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 [2023-12-16 17:44:29,554 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 [2023-12-16 17:44:29,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:29,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash -979193692, now seen corresponding path program 10 times [2023-12-16 17:44:29,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550280170] [2023-12-16 17:44:29,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:44:29,556 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 [2023-12-16 17:44:29,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:29,557 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) [2023-12-16 17:44:29,599 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 [2023-12-16 17:44:29,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:44:29,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:29,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:44:29,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4035 refuted. 0 times theorem prover too weak. 27022 trivial. 0 not checked. [2023-12-16 17:44:29,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4135 refuted. 0 times theorem prover too weak. 26922 trivial. 0 not checked. [2023-12-16 17:44:31,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550280170] [2023-12-16 17:44:31,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550280170] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:31,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:31,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-16 17:44:31,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604455543] [2023-12-16 17:44:31,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:31,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 17:44:31,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 17:44:31,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:44:31,477 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) [2023-12-16 17:44:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:31,951 INFO L93 Difference]: Finished difference Result 171 states and 313 transitions. [2023-12-16 17:44:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 17:44:31,952 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 [2023-12-16 17:44:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:31,953 INFO L225 Difference]: With dead ends: 171 [2023-12-16 17:44:31,953 INFO L226 Difference]: Without dead ends: 102 [2023-12-16 17:44:31,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-16 17:44:31,955 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, 54 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 [2023-12-16 17:44:31,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 268 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:44:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-16 17:44:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 79. [2023-12-16 17:44:31,965 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) [2023-12-16 17:44:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-16 17:44:31,965 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 691 [2023-12-16 17:44:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:31,968 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-16 17:44:31,969 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) [2023-12-16 17:44:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-16 17:44:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2023-12-16 17:44:31,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:31,976 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 143, 88, 88, 88, 88, 88, 88, 55, 34, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:31,984 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 [2023-12-16 17:44:32,184 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 [2023-12-16 17:44:32,185 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:32,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:32,185 INFO L85 PathProgramCache]: Analyzing trace with hash -111943124, now seen corresponding path program 11 times [2023-12-16 17:44:32,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:32,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471964610] [2023-12-16 17:44:32,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:44:32,186 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 [2023-12-16 17:44:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:32,187 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) [2023-12-16 17:44:32,193 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 [2023-12-16 17:44:36,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 151 check-sat command(s) [2023-12-16 17:44:36,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:36,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 356 conjunts are in the unsatisfiable core [2023-12-16 17:44:36,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 0 proven. 26698 refuted. 0 times theorem prover too weak. 57243 trivial. 0 not checked. [2023-12-16 17:44:37,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 0 proven. 26698 refuted. 0 times theorem prover too weak. 57243 trivial. 0 not checked. [2023-12-16 17:44:44,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:44,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471964610] [2023-12-16 17:44:44,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471964610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:44,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:44,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 40 [2023-12-16 17:44:44,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343379270] [2023-12-16 17:44:44,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:44,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-16 17:44:44,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:44,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-16 17:44:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 17:44:44,836 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) [2023-12-16 17:44:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:45,286 INFO L93 Difference]: Finished difference Result 122 states and 179 transitions. [2023-12-16 17:44:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 17:44:45,286 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 [2023-12-16 17:44:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:45,290 INFO L225 Difference]: With dead ends: 122 [2023-12-16 17:44:45,290 INFO L226 Difference]: Without dead ends: 118 [2023-12-16 17:44:45,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2238 GetRequests, 2200 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 17:44:45,292 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:45,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1267 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:44:45,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-16 17:44:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2023-12-16 17:44:45,306 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) [2023-12-16 17:44:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 162 transitions. [2023-12-16 17:44:45,308 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 162 transitions. Word has length 1120 [2023-12-16 17:44:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:45,309 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 162 transitions. [2023-12-16 17:44:45,309 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) [2023-12-16 17:44:45,309 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 162 transitions. [2023-12-16 17:44:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2023-12-16 17:44:45,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:45,319 INFO L195 NwaCegarLoop]: trace histogram [219, 219, 177, 109, 109, 109, 109, 109, 109, 68, 42, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:45,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:45,537 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 [2023-12-16 17:44:45,537 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:45,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash -753267258, now seen corresponding path program 12 times [2023-12-16 17:44:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:45,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110655144] [2023-12-16 17:44:45,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:44:45,538 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 [2023-12-16 17:44:45,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:45,539 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) [2023-12-16 17:44:45,540 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 [2023-12-16 17:44:51,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 178 check-sat command(s) [2023-12-16 17:44:51,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:51,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 17:44:51,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 5507 proven. 953 refuted. 0 times theorem prover too weak. 122258 trivial. 0 not checked. [2023-12-16 17:44:51,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 5507 proven. 1003 refuted. 0 times theorem prover too weak. 122208 trivial. 0 not checked. [2023-12-16 17:44:54,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110655144] [2023-12-16 17:44:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110655144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:54,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:54,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 17 [2023-12-16 17:44:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869528386] [2023-12-16 17:44:54,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:54,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:44:54,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:54,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:44:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:44:54,391 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) [2023-12-16 17:44:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:54,540 INFO L93 Difference]: Finished difference Result 117 states and 176 transitions. [2023-12-16 17:44:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:44:54,540 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 [2023-12-16 17:44:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:54,542 INFO L225 Difference]: With dead ends: 117 [2023-12-16 17:44:54,542 INFO L226 Difference]: Without dead ends: 113 [2023-12-16 17:44:54,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2774 GetRequests, 2753 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:44:54,543 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 [2023-12-16 17:44:54,543 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] [2023-12-16 17:44:54,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-16 17:44:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2023-12-16 17:44:54,551 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) [2023-12-16 17:44:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 167 transitions. [2023-12-16 17:44:54,552 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 167 transitions. Word has length 1385 [2023-12-16 17:44:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:54,553 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 167 transitions. [2023-12-16 17:44:54,554 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) [2023-12-16 17:44:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 167 transitions. [2023-12-16 17:44:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1550 [2023-12-16 17:44:54,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:54,565 INFO L195 NwaCegarLoop]: trace histogram [245, 245, 198, 122, 122, 122, 122, 122, 122, 76, 47, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:54,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:54,779 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 [2023-12-16 17:44:54,780 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:54,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2129517946, now seen corresponding path program 13 times [2023-12-16 17:44:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940119072] [2023-12-16 17:44:54,781 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:44:54,781 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 [2023-12-16 17:44:54,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:54,782 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) [2023-12-16 17:44:54,817 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 [2023-12-16 17:44:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:55,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:44:55,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 161206 backedges. 6263 proven. 5013 refuted. 0 times theorem prover too weak. 149930 trivial. 0 not checked. [2023-12-16 17:44:56,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 161206 backedges. 6263 proven. 5113 refuted. 0 times theorem prover too weak. 149830 trivial. 0 not checked. [2023-12-16 17:44:58,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940119072] [2023-12-16 17:44:58,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940119072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:58,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:58,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 22 [2023-12-16 17:44:58,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588688527] [2023-12-16 17:44:58,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:58,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 17:44:58,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 17:44:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:44:58,656 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) [2023-12-16 17:44:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:59,852 INFO L93 Difference]: Finished difference Result 286 states and 601 transitions. [2023-12-16 17:44:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-16 17:44:59,852 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 [2023-12-16 17:44:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:59,856 INFO L225 Difference]: With dead ends: 286 [2023-12-16 17:44:59,856 INFO L226 Difference]: Without dead ends: 178 [2023-12-16 17:44:59,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3155 GetRequests, 3076 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1701, Invalid=4779, Unknown=0, NotChecked=0, Total=6480 [2023-12-16 17:44:59,859 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 305 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:59,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 91 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:44:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-16 17:44:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2023-12-16 17:44:59,870 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) [2023-12-16 17:44:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 192 transitions. [2023-12-16 17:44:59,871 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 192 transitions. Word has length 1549 [2023-12-16 17:44:59,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:59,871 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 192 transitions. [2023-12-16 17:44:59,871 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) [2023-12-16 17:44:59,871 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 192 transitions. [2023-12-16 17:44:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1815 [2023-12-16 17:44:59,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:59,887 INFO L195 NwaCegarLoop]: trace histogram [287, 287, 232, 143, 143, 143, 143, 143, 143, 89, 55, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:59,902 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 [2023-12-16 17:45:00,102 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 [2023-12-16 17:45:00,103 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:00,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1621089546, now seen corresponding path program 14 times [2023-12-16 17:45:00,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:00,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097665779] [2023-12-16 17:45:00,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:00,104 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 [2023-12-16 17:45:00,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:00,105 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) [2023-12-16 17:45:00,106 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 [2023-12-16 17:45:00,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:00,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:00,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 17:45:00,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 221419 backedges. 1977 proven. 12732 refuted. 0 times theorem prover too weak. 206710 trivial. 0 not checked. [2023-12-16 17:45:01,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 221419 backedges. 1977 proven. 12858 refuted. 0 times theorem prover too weak. 206584 trivial. 0 not checked. [2023-12-16 17:45:04,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:04,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097665779] [2023-12-16 17:45:04,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097665779] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:04,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:04,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23] total 24 [2023-12-16 17:45:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639397105] [2023-12-16 17:45:04,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 17:45:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 17:45:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:45:04,732 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) [2023-12-16 17:45:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:06,388 INFO L93 Difference]: Finished difference Result 323 states and 593 transitions. [2023-12-16 17:45:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-16 17:45:06,389 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 [2023-12-16 17:45:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:06,390 INFO L225 Difference]: With dead ends: 323 [2023-12-16 17:45:06,390 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 17:45:06,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3708 GetRequests, 3604 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3716 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2658, Invalid=8472, Unknown=0, NotChecked=0, Total=11130 [2023-12-16 17:45:06,394 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 [2023-12-16 17:45:06,395 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] [2023-12-16 17:45:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 17:45:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 17:45:06,395 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) [2023-12-16 17:45:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 17:45:06,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1814 [2023-12-16 17:45:06,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:06,395 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 17:45:06,395 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) [2023-12-16 17:45:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 17:45:06,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 17:45:06,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:45:06,428 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 [2023-12-16 17:45:06,598 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 [2023-12-16 17:45:06,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 17:45:07,469 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 17:45:07,470 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-12-16 17:45:07,470 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2023-12-16 17:45:07,470 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (= |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) [2023-12-16 17:45:07,470 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-12-16 17:45:07,470 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2023-12-16 17:45:07,470 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2023-12-16 17:45:07,470 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 17:45:07,470 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2023-12-16 17:45:07,470 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)) [2023-12-16 17:45:07,471 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)))) [2023-12-16 17:45:07,471 INFO L899 garLoopResultBuilder]: For program point L13-2(line 13) no Hoare annotation was computed. [2023-12-16 17:45:07,471 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2023-12-16 17:45:07,471 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 15) the Hoare annotation is: true [2023-12-16 17:45:07,471 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2023-12-16 17:45:07,471 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2023-12-16 17:45:07,473 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1] [2023-12-16 17:45:07,474 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:45:07,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:45:07 BoogieIcfgContainer [2023-12-16 17:45:07,480 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:45:07,480 INFO L158 Benchmark]: Toolchain (without parser) took 52092.16ms. Allocated memory was 259.0MB in the beginning and 540.0MB in the end (delta: 281.0MB). Free memory was 220.1MB in the beginning and 277.0MB in the end (delta: -57.0MB). Peak memory consumption was 325.7MB. Max. memory is 8.0GB. [2023-12-16 17:45:07,480 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 165.7MB. Free memory was 119.3MB in the beginning and 119.1MB in the end (delta: 131.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:45:07,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.71ms. Allocated memory is still 259.0MB. Free memory was 219.6MB in the beginning and 209.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 17:45:07,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.96ms. Allocated memory is still 259.0MB. Free memory was 209.1MB in the beginning and 207.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:45:07,481 INFO L158 Benchmark]: Boogie Preprocessor took 29.75ms. Allocated memory is still 259.0MB. Free memory was 207.5MB in the beginning and 206.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:45:07,482 INFO L158 Benchmark]: RCFGBuilder took 240.47ms. Allocated memory is still 259.0MB. Free memory was 206.0MB in the beginning and 194.9MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:45:07,482 INFO L158 Benchmark]: TraceAbstraction took 51610.64ms. Allocated memory was 259.0MB in the beginning and 540.0MB in the end (delta: 281.0MB). Free memory was 194.5MB in the beginning and 277.0MB in the end (delta: -82.6MB). Peak memory consumption was 300.5MB. Max. memory is 8.0GB. [2023-12-16 17:45:07,485 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 165.7MB. Free memory was 119.3MB in the beginning and 119.1MB in the end (delta: 131.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.71ms. Allocated memory is still 259.0MB. Free memory was 219.6MB in the beginning and 209.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.96ms. Allocated memory is still 259.0MB. Free memory was 209.1MB in the beginning and 207.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.75ms. Allocated memory is still 259.0MB. Free memory was 207.5MB in the beginning and 206.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 240.47ms. Allocated memory is still 259.0MB. Free memory was 206.0MB in the beginning and 194.9MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 51610.64ms. Allocated memory was 259.0MB in the beginning and 540.0MB in the end (delta: 281.0MB). Free memory was 194.5MB in the beginning and 277.0MB in the end (delta: -82.6MB). Peak memory consumption was 300.5MB. 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: 51.6s, OverallIterations: 18, TraceHistogramMax: 287, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.1s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1463 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1342 mSDsluCounter, 2897 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2503 mSDsCounter, 1242 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5151 IncrementalHoareTripleChecker+Invalid, 6393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1242 mSolverCounterUnsat, 394 mSDtfsCounter, 5151 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, 5.3s 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: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 178 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 499 PreInvPairs, 673 NumberOfFragments, 192 HoareAnnotationTreeSize, 499 FormulaSimplifications, 18119 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 4 FormulaSimplificationsInter, 9151 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 11.7s SatisfiabilityAnalysisTime, 27.4s 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! [2023-12-16 17:45:07,519 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...