/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_2calls_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:45:41,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:45:41,868 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 17:45:41,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:45:41,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:45:41,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:45:41,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:45:41,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:45:41,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:45:41,897 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:45:41,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:45:41,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:45:41,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:45:41,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:45:41,899 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:45:41,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:45:41,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:45:41,900 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:45:41,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:45:41,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:45:41,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:45:41,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:45:41,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:45:41,902 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:45:41,902 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:45:41,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:45:41,902 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:45:41,902 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:45:41,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:45:41,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:45:41,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:45:41,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:45:41,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:45:41,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:45:41,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:45:41,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:45:41,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:45:41,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:45:41,904 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:45:41,904 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:45:41,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:45:41,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:45:41,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:45:41,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:45:41,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:45:41,905 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:45:41,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:45:42,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:45:42,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:45:42,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:45:42,098 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:45:42,099 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:45:42,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2023-12-16 17:45:43,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:45:43,189 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:45:43,189 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2023-12-16 17:45:43,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a9d7932/b588ded619114d4c8fabade1fa856bce/FLAG2e6ea2ca2 [2023-12-16 17:45:43,207 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a9d7932/b588ded619114d4c8fabade1fa856bce [2023-12-16 17:45:43,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:45:43,210 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:45:43,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:45:43,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:45:43,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:45:43,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e977d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43, skipping insertion in model container [2023-12-16 17:45:43,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,233 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:45:43,352 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_2calls_8-1.c[947,960] [2023-12-16 17:45:43,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:45:43,370 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:45:43,380 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_2calls_8-1.c[947,960] [2023-12-16 17:45:43,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:45:43,390 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:45:43,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43 WrapperNode [2023-12-16 17:45:43,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:45:43,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:45:43,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:45:43,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:45:43,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,413 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-16 17:45:43,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:45:43,414 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:45:43,414 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:45:43,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:45:43,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,429 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 17:45:43,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:45:43,436 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:45:43,436 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:45:43,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:45:43,437 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (1/1) ... [2023-12-16 17:45:43,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:45:43,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:45:43,469 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 17:45:43,480 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 17:45:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:45:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:45:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-12-16 17:45:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-12-16 17:45:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-12-16 17:45:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-12-16 17:45:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:45:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:45:43,566 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:45:43,570 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:45:43,720 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:45:43,740 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:45:43,740 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:45:43,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:45:43 BoogieIcfgContainer [2023-12-16 17:45:43,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:45:43,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:45:43,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:45:43,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:45:43,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:45:43" (1/3) ... [2023-12-16 17:45:43,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c245689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:45:43, skipping insertion in model container [2023-12-16 17:45:43,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:43" (2/3) ... [2023-12-16 17:45:43,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c245689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:45:43, skipping insertion in model container [2023-12-16 17:45:43,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:45:43" (3/3) ... [2023-12-16 17:45:43,775 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2023-12-16 17:45:43,787 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:45:43,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:45:43,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:45:43,820 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;@2d6510c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:45:43,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:45:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:45:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 17:45:43,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:43,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:43,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:43,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1178273046, now seen corresponding path program 1 times [2023-12-16 17:45:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:43,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388643996] [2023-12-16 17:45:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:43,841 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 17:45:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:43,843 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 17:45:43,845 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 17:45:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:43,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:45:43,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:43,938 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 17:45:43,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:45:43,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:43,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388643996] [2023-12-16 17:45:43,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388643996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:45:43,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:45:43,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:45:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580010497] [2023-12-16 17:45:43,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:45:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:45:43,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:45:43,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:45:43,962 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 17:45:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:44,043 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2023-12-16 17:45:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:45:44,045 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 17:45:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:44,050 INFO L225 Difference]: With dead ends: 32 [2023-12-16 17:45:44,050 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 17:45:44,052 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 17:45:44,054 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 66 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 17:45:44,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 66 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 17:45:44,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 17:45:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-16 17:45:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-16 17:45:44,079 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 9 [2023-12-16 17:45:44,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:44,080 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-16 17:45:44,080 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 17:45:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-16 17:45:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 17:45:44,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:44,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:44,084 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 17:45:44,284 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 17:45:44,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:44,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1422996679, now seen corresponding path program 1 times [2023-12-16 17:45:44,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:44,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757611573] [2023-12-16 17:45:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:44,286 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 17:45:44,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:44,287 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 17:45:44,288 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 17:45:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:44,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:45:44,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:44,359 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 17:45:44,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:45:44,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757611573] [2023-12-16 17:45:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757611573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:45:44,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:45:44,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:45:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661967595] [2023-12-16 17:45:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:45:44,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:45:44,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:45:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:45:44,362 INFO L87 Difference]: Start difference. First operand 24 states and 31 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 17:45:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:44,410 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-12-16 17:45:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:45:44,410 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 17:45:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:44,411 INFO L225 Difference]: With dead ends: 30 [2023-12-16 17:45:44,411 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 17:45:44,412 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 17:45:44,412 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:44,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:45:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 17:45:44,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-16 17:45:44,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-16 17:45:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-16 17:45:44,418 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 10 [2023-12-16 17:45:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:44,418 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-16 17:45:44,418 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 17:45:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-16 17:45:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 17:45:44,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:44,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:44,434 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 17:45:44,621 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 17:45:44,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:44,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:44,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1917903498, now seen corresponding path program 1 times [2023-12-16 17:45:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:44,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654533479] [2023-12-16 17:45:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:44,623 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 17:45:44,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:44,624 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 17:45:44,631 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 17:45:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:44,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:45:44,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:45:44,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:45:44,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654533479] [2023-12-16 17:45:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654533479] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:44,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:44,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 17:45:44,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512311483] [2023-12-16 17:45:44,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:44,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:45:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:44,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:45:44,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:45:44,968 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 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 17:45:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:45,108 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2023-12-16 17:45:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:45:45,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 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 21 [2023-12-16 17:45:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:45,111 INFO L225 Difference]: With dead ends: 36 [2023-12-16 17:45:45,111 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 17:45:45,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:45,112 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:45,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 65 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 17:45:45,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-12-16 17:45:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-12-16 17:45:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-12-16 17:45:45,119 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 21 [2023-12-16 17:45:45,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:45,120 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-12-16 17:45:45,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 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 17:45:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-12-16 17:45:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 17:45:45,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:45,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:45,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:45,324 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 17:45:45,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:45,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash -773369340, now seen corresponding path program 1 times [2023-12-16 17:45:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818323826] [2023-12-16 17:45:45,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:45,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:45,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:45,327 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 17:45:45,329 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 17:45:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:45,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:45:45,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:45:45,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:45:45,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:45,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818323826] [2023-12-16 17:45:45,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818323826] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:45,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:45,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 17:45:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749606651] [2023-12-16 17:45:45,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:45,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:45:45,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:45:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:45:45,548 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 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 17:45:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:45,667 INFO L93 Difference]: Finished difference Result 60 states and 95 transitions. [2023-12-16 17:45:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:45:45,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 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 17:45:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:45,668 INFO L225 Difference]: With dead ends: 60 [2023-12-16 17:45:45,668 INFO L226 Difference]: Without dead ends: 34 [2023-12-16 17:45:45,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:45,670 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:45,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 95 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-16 17:45:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2023-12-16 17:45:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-16 17:45:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2023-12-16 17:45:45,676 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 22 [2023-12-16 17:45:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:45,676 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2023-12-16 17:45:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 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 17:45:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2023-12-16 17:45:45,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 17:45:45,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:45,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:45,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 17:45:45,879 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 17:45:45,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:45,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1000055446, now seen corresponding path program 1 times [2023-12-16 17:45:45,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:45,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274870228] [2023-12-16 17:45:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:45,881 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 17:45:45,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:45,882 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 17:45:45,886 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 17:45:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:45,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:45:45,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 17:45:45,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:45:46,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:46,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274870228] [2023-12-16 17:45:46,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274870228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:46,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:46,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-16 17:45:46,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891488038] [2023-12-16 17:45:46,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:46,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:45:46,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:46,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:45:46,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:46,257 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:45:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:46,433 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2023-12-16 17:45:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:45:46,434 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) Word has length 33 [2023-12-16 17:45:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:46,435 INFO L225 Difference]: With dead ends: 48 [2023-12-16 17:45:46,435 INFO L226 Difference]: Without dead ends: 44 [2023-12-16 17:45:46,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:45:46,436 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:46,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 87 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-16 17:45:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2023-12-16 17:45:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (21), 10 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-16 17:45:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2023-12-16 17:45:46,443 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 33 [2023-12-16 17:45:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:46,444 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2023-12-16 17:45:46,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:45:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2023-12-16 17:45:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 17:45:46,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:46,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:46,449 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 17:45:46,647 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 17:45:46,647 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:46,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:46,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1077323161, now seen corresponding path program 1 times [2023-12-16 17:45:46,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:46,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838749316] [2023-12-16 17:45:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:46,648 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 17:45:46,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:46,649 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 17:45:46,650 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 17:45:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:46,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:45:46,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:45:46,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:45:46,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838749316] [2023-12-16 17:45:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838749316] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:46,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:46,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-16 17:45:46,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362804086] [2023-12-16 17:45:46,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:46,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:45:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:45:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:46,909 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:45:47,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:47,055 INFO L93 Difference]: Finished difference Result 78 states and 149 transitions. [2023-12-16 17:45:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:45:47,056 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) Word has length 34 [2023-12-16 17:45:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:47,057 INFO L225 Difference]: With dead ends: 78 [2023-12-16 17:45:47,057 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 17:45:47,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:45:47,058 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:47,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 126 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 17:45:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-16 17:45:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 9 states have return successors, (37), 14 states have call predecessors, (37), 10 states have call successors, (37) [2023-12-16 17:45:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 76 transitions. [2023-12-16 17:45:47,083 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 76 transitions. Word has length 34 [2023-12-16 17:45:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:47,083 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 76 transitions. [2023-12-16 17:45:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:45:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 76 transitions. [2023-12-16 17:45:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 17:45:47,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:47,084 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:47,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:47,286 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 17:45:47,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:47,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash -797673590, now seen corresponding path program 2 times [2023-12-16 17:45:47,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:47,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856991694] [2023-12-16 17:45:47,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:47,288 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 17:45:47,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:47,289 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 17:45:47,289 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 17:45:47,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:47,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:47,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:45:47,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 17:45:47,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 17:45:47,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:47,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856991694] [2023-12-16 17:45:47,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856991694] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:47,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-16 17:45:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552701764] [2023-12-16 17:45:47,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:45:47,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:45:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:45:47,850 INFO L87 Difference]: Start difference. First operand 45 states and 76 transitions. Second operand has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-16 17:45:48,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:48,132 INFO L93 Difference]: Finished difference Result 69 states and 141 transitions. [2023-12-16 17:45:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:45:48,133 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) Word has length 45 [2023-12-16 17:45:48,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:48,134 INFO L225 Difference]: With dead ends: 69 [2023-12-16 17:45:48,134 INFO L226 Difference]: Without dead ends: 65 [2023-12-16 17:45:48,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:45:48,135 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:48,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 140 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-16 17:45:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2023-12-16 17:45:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 11 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (47), 16 states have call predecessors, (47), 11 states have call successors, (47) [2023-12-16 17:45:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 89 transitions. [2023-12-16 17:45:48,146 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 89 transitions. Word has length 45 [2023-12-16 17:45:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:48,146 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 89 transitions. [2023-12-16 17:45:48,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-16 17:45:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 89 transitions. [2023-12-16 17:45:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 17:45:48,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:48,148 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:48,154 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 17:45:48,355 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 17:45:48,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:48,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:48,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1078970546, now seen corresponding path program 1 times [2023-12-16 17:45:48,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:48,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674699813] [2023-12-16 17:45:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:48,356 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 17:45:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:48,357 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 17:45:48,357 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 17:45:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:48,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:45:48,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 17:45:48,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 17:45:48,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674699813] [2023-12-16 17:45:48,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674699813] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:48,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:48,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-16 17:45:48,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879606654] [2023-12-16 17:45:48,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:48,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:45:48,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:45:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:45:48,699 INFO L87 Difference]: Start difference. First operand 49 states and 89 transitions. Second operand has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-16 17:45:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:48,900 INFO L93 Difference]: Finished difference Result 107 states and 251 transitions. [2023-12-16 17:45:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:45:48,901 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) Word has length 46 [2023-12-16 17:45:48,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:48,902 INFO L225 Difference]: With dead ends: 107 [2023-12-16 17:45:48,902 INFO L226 Difference]: Without dead ends: 60 [2023-12-16 17:45:48,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-16 17:45:48,903 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:48,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 181 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-16 17:45:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-16 17:45:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 13 states have call successors, (13), 2 states have call predecessors, (13), 13 states have return successors, (69), 21 states have call predecessors, (69), 13 states have call successors, (69) [2023-12-16 17:45:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-16 17:45:48,912 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 46 [2023-12-16 17:45:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:48,912 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-16 17:45:48,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-16 17:45:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-16 17:45:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 17:45:48,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:48,914 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:48,927 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 17:45:49,127 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 17:45:49,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:49,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash 82175210, now seen corresponding path program 3 times [2023-12-16 17:45:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:49,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802800890] [2023-12-16 17:45:49,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:45:49,131 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 17:45:49,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:49,131 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 17:45:49,132 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 17:45:49,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 17:45:49,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:49,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:45:49,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-16 17:45:49,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-16 17:45:49,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802800890] [2023-12-16 17:45:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802800890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:49,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:49,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 17:45:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40719175] [2023-12-16 17:45:49,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:49,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:45:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:45:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:45:49,362 INFO L87 Difference]: Start difference. First operand 60 states and 119 transitions. Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-16 17:45:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:49,469 INFO L93 Difference]: Finished difference Result 82 states and 162 transitions. [2023-12-16 17:45:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:45:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 57 [2023-12-16 17:45:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:49,470 INFO L225 Difference]: With dead ends: 82 [2023-12-16 17:45:49,470 INFO L226 Difference]: Without dead ends: 78 [2023-12-16 17:45:49,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:49,471 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:49,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-16 17:45:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2023-12-16 17:45:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 13 states have call successors, (13), 2 states have call predecessors, (13), 13 states have return successors, (69), 21 states have call predecessors, (69), 13 states have call successors, (69) [2023-12-16 17:45:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-16 17:45:49,479 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 57 [2023-12-16 17:45:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:49,480 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-16 17:45:49,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-16 17:45:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-16 17:45:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 17:45:49,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:49,483 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:49,487 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 17:45:49,683 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 17:45:49,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:49,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1783295408, now seen corresponding path program 2 times [2023-12-16 17:45:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:49,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401629558] [2023-12-16 17:45:49,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:49,685 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 17:45:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:49,685 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 17:45:49,688 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 17:45:49,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:49,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:49,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:45:49,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 17:45:49,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 17:45:50,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401629558] [2023-12-16 17:45:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401629558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:50,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:50,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-16 17:45:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907011345] [2023-12-16 17:45:50,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:50,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 17:45:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 17:45:50,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-16 17:45:50,388 INFO L87 Difference]: Start difference. First operand 60 states and 119 transitions. Second operand has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-16 17:45:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:50,878 INFO L93 Difference]: Finished difference Result 162 states and 459 transitions. [2023-12-16 17:45:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:45:50,879 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) Word has length 58 [2023-12-16 17:45:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:50,880 INFO L225 Difference]: With dead ends: 162 [2023-12-16 17:45:50,880 INFO L226 Difference]: Without dead ends: 104 [2023-12-16 17:45:50,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:45:50,882 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:50,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:45:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-16 17:45:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-16 17:45:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 59 states have internal predecessors, (61), 20 states have call successors, (20), 5 states have call predecessors, (20), 22 states have return successors, (150), 33 states have call predecessors, (150), 20 states have call successors, (150) [2023-12-16 17:45:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2023-12-16 17:45:50,911 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 58 [2023-12-16 17:45:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:50,911 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2023-12-16 17:45:50,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-16 17:45:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2023-12-16 17:45:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 17:45:50,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:50,913 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:50,918 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 17:45:51,113 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 17:45:51,114 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:51,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2115449141, now seen corresponding path program 2 times [2023-12-16 17:45:51,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:51,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129599828] [2023-12-16 17:45:51,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:51,114 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 17:45:51,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:51,115 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 17:45:51,116 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 17:45:51,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:51,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:51,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:45:51,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-16 17:45:51,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-16 17:45:51,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129599828] [2023-12-16 17:45:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129599828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:51,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:51,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-16 17:45:51,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935769702] [2023-12-16 17:45:51,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:51,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 17:45:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 17:45:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-16 17:45:51,588 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 6 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-16 17:45:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:51,806 INFO L93 Difference]: Finished difference Result 208 states and 647 transitions. [2023-12-16 17:45:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:45:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 6 states have call predecessors, (16), 13 states have call successors, (16) Word has length 70 [2023-12-16 17:45:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:51,808 INFO L225 Difference]: With dead ends: 208 [2023-12-16 17:45:51,808 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 17:45:51,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:45:51,809 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:51,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 209 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 17:45:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2023-12-16 17:45:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 61 states have (on average 1.098360655737705) internal successors, (67), 65 states have internal predecessors, (67), 22 states have call successors, (22), 5 states have call predecessors, (22), 25 states have return successors, (186), 38 states have call predecessors, (186), 22 states have call successors, (186) [2023-12-16 17:45:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 275 transitions. [2023-12-16 17:45:51,820 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 275 transitions. Word has length 70 [2023-12-16 17:45:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:51,820 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 275 transitions. [2023-12-16 17:45:51,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 6 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-16 17:45:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 275 transitions. [2023-12-16 17:45:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 17:45:51,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:51,822 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:51,832 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 17:45:52,024 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 17:45:52,024 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:52,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:52,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1424247677, now seen corresponding path program 3 times [2023-12-16 17:45:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:52,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386694519] [2023-12-16 17:45:52,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:45:52,025 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 17:45:52,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:52,093 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 17:45:52,094 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 17:45:52,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 17:45:52,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:52,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 17:45:52,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 263 proven. 5 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-12-16 17:45:52,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 195 proven. 19 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-12-16 17:45:52,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386694519] [2023-12-16 17:45:52,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386694519] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:52,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:52,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-16 17:45:52,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300536120] [2023-12-16 17:45:52,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:52,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:45:52,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:45:52,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:45:52,645 INFO L87 Difference]: Start difference. First operand 109 states and 275 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 8 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (21), 6 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-16 17:45:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:52,898 INFO L93 Difference]: Finished difference Result 222 states and 707 transitions. [2023-12-16 17:45:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:45:52,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 8 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (21), 6 states have call predecessors, (21), 8 states have call successors, (21) Word has length 142 [2023-12-16 17:45:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:52,900 INFO L225 Difference]: With dead ends: 222 [2023-12-16 17:45:52,900 INFO L226 Difference]: Without dead ends: 115 [2023-12-16 17:45:52,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-16 17:45:52,901 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:52,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 159 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-16 17:45:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-16 17:45:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 69 states have internal predecessors, (71), 22 states have call successors, (22), 5 states have call predecessors, (22), 27 states have return successors, (179), 40 states have call predecessors, (179), 22 states have call successors, (179) [2023-12-16 17:45:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 272 transitions. [2023-12-16 17:45:52,910 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 272 transitions. Word has length 142 [2023-12-16 17:45:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:52,910 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 272 transitions. [2023-12-16 17:45:52,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 8 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (21), 6 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-16 17:45:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 272 transitions. [2023-12-16 17:45:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 17:45:52,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:52,912 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:52,928 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 (13)] Ended with exit code 0 [2023-12-16 17:45:53,114 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 17:45:53,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:53,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash 705383518, now seen corresponding path program 3 times [2023-12-16 17:45:53,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:53,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099211962] [2023-12-16 17:45:53,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:45:53,115 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 17:45:53,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:53,117 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 17:45:53,123 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 17:45:53,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 17:45:53,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:53,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:45:53,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-16 17:45:53,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:45:53,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099211962] [2023-12-16 17:45:53,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099211962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:45:53,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:45:53,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:45:53,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207311788] [2023-12-16 17:45:53,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:45:53,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:45:53,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:45:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:45:53,188 INFO L87 Difference]: Start difference. First operand 115 states and 272 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 17:45:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:53,235 INFO L93 Difference]: Finished difference Result 210 states and 572 transitions. [2023-12-16 17:45:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:45:53,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2023-12-16 17:45:53,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:53,237 INFO L225 Difference]: With dead ends: 210 [2023-12-16 17:45:53,237 INFO L226 Difference]: Without dead ends: 95 [2023-12-16 17:45:53,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:45:53,239 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:53,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 75 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:45:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-16 17:45:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-16 17:45:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 57 states have internal predecessors, (59), 19 states have call successors, (19), 5 states have call predecessors, (19), 21 states have return successors, (113), 32 states have call predecessors, (113), 19 states have call successors, (113) [2023-12-16 17:45:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 191 transitions. [2023-12-16 17:45:53,245 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 191 transitions. Word has length 94 [2023-12-16 17:45:53,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:53,246 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 191 transitions. [2023-12-16 17:45:53,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 17:45:53,246 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 191 transitions. [2023-12-16 17:45:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 17:45:53,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:53,247 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:53,251 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 17:45:53,449 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 17:45:53,450 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:53,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash -187948887, now seen corresponding path program 1 times [2023-12-16 17:45:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:53,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055417163] [2023-12-16 17:45:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:53,450 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 17:45:53,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:53,451 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 17:45:53,476 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 17:45:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:53,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 17:45:53,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 43 proven. 139 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-16 17:45:53,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 43 proven. 155 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-12-16 17:45:54,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055417163] [2023-12-16 17:45:54,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055417163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:54,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:54,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 18 [2023-12-16 17:45:54,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215285505] [2023-12-16 17:45:54,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:54,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 17:45:54,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:54,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 17:45:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-16 17:45:54,087 INFO L87 Difference]: Start difference. First operand 95 states and 191 transitions. Second operand has 18 states, 16 states have (on average 3.4375) internal successors, (55), 18 states have internal predecessors, (55), 15 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 7 states have call predecessors, (21), 15 states have call successors, (21) [2023-12-16 17:45:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:54,343 INFO L93 Difference]: Finished difference Result 199 states and 508 transitions. [2023-12-16 17:45:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:45:54,344 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.4375) internal successors, (55), 18 states have internal predecessors, (55), 15 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 7 states have call predecessors, (21), 15 states have call successors, (21) Word has length 120 [2023-12-16 17:45:54,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:54,345 INFO L225 Difference]: With dead ends: 199 [2023-12-16 17:45:54,345 INFO L226 Difference]: Without dead ends: 106 [2023-12-16 17:45:54,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:45:54,347 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:54,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 261 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-16 17:45:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-16 17:45:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 63 states have internal predecessors, (65), 21 states have call successors, (21), 5 states have call predecessors, (21), 24 states have return successors, (142), 37 states have call predecessors, (142), 21 states have call successors, (142) [2023-12-16 17:45:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 228 transitions. [2023-12-16 17:45:54,354 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 228 transitions. Word has length 120 [2023-12-16 17:45:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:54,354 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 228 transitions. [2023-12-16 17:45:54,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.4375) internal successors, (55), 18 states have internal predecessors, (55), 15 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 7 states have call predecessors, (21), 15 states have call successors, (21) [2023-12-16 17:45:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 228 transitions. [2023-12-16 17:45:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-16 17:45:54,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:54,357 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 26, 26, 24, 17, 16, 16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 8, 3, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:54,374 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 17:45:54,560 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 17:45:54,560 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:54,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:54,561 INFO L85 PathProgramCache]: Analyzing trace with hash -273803883, now seen corresponding path program 2 times [2023-12-16 17:45:54,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:54,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015402874] [2023-12-16 17:45:54,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:54,561 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 17:45:54,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:54,562 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 17:45:54,604 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 17:45:54,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:54,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:54,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:45:54,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 80 proven. 814 refuted. 0 times theorem prover too weak. 3508 trivial. 0 not checked. [2023-12-16 17:45:54,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 80 proven. 835 refuted. 0 times theorem prover too weak. 3487 trivial. 0 not checked. [2023-12-16 17:45:56,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:56,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015402874] [2023-12-16 17:45:56,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015402874] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:56,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:56,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 20 [2023-12-16 17:45:56,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722782186] [2023-12-16 17:45:56,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:56,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 17:45:56,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 17:45:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-16 17:45:56,444 INFO L87 Difference]: Start difference. First operand 106 states and 228 transitions. Second operand has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-16 17:45:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:57,556 INFO L93 Difference]: Finished difference Result 290 states and 861 transitions. [2023-12-16 17:45:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 17:45:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) Word has length 368 [2023-12-16 17:45:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:57,559 INFO L225 Difference]: With dead ends: 290 [2023-12-16 17:45:57,559 INFO L226 Difference]: Without dead ends: 184 [2023-12-16 17:45:57,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=1312, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 17:45:57,561 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:57,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 158 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:45:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-16 17:45:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2023-12-16 17:45:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 105 states have internal predecessors, (113), 34 states have call successors, (34), 11 states have call predecessors, (34), 39 states have return successors, (278), 60 states have call predecessors, (278), 34 states have call successors, (278) [2023-12-16 17:45:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 425 transitions. [2023-12-16 17:45:57,579 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 425 transitions. Word has length 368 [2023-12-16 17:45:57,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:57,580 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 425 transitions. [2023-12-16 17:45:57,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-16 17:45:57,580 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 425 transitions. [2023-12-16 17:45:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-16 17:45:57,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:57,587 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 42, 42, 38, 30, 25, 25, 25, 25, 25, 25, 21, 21, 21, 21, 21, 21, 21, 13, 9, 4, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:57,592 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 17:45:57,792 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 17:45:57,792 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:57,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1573896179, now seen corresponding path program 3 times [2023-12-16 17:45:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:57,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791770036] [2023-12-16 17:45:57,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:45:57,793 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 17:45:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:57,794 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 17:45:57,798 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 17:45:57,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-16 17:45:57,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:57,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:45:57,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11212 backedges. 2065 proven. 18 refuted. 0 times theorem prover too weak. 9129 trivial. 0 not checked. [2023-12-16 17:45:57,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 11212 backedges. 1606 proven. 40 refuted. 0 times theorem prover too weak. 9566 trivial. 0 not checked. [2023-12-16 17:45:59,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:59,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791770036] [2023-12-16 17:45:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791770036] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:59,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2023-12-16 17:45:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073770399] [2023-12-16 17:45:59,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:59,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 17:45:59,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 17:45:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-16 17:45:59,509 INFO L87 Difference]: Start difference. First operand 177 states and 425 transitions. Second operand has 16 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (24), 7 states have call predecessors, (24), 12 states have call successors, (24) [2023-12-16 17:45:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:59,872 INFO L93 Difference]: Finished difference Result 357 states and 1061 transitions. [2023-12-16 17:45:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:45:59,873 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (24), 7 states have call predecessors, (24), 12 states have call successors, (24) Word has length 583 [2023-12-16 17:45:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:59,875 INFO L225 Difference]: With dead ends: 357 [2023-12-16 17:45:59,875 INFO L226 Difference]: Without dead ends: 180 [2023-12-16 17:45:59,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:45:59,877 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:59,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 236 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:45:59,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-16 17:45:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2023-12-16 17:45:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 102 states have (on average 1.0980392156862746) internal successors, (112), 104 states have internal predecessors, (112), 32 states have call successors, (32), 12 states have call predecessors, (32), 37 states have return successors, (242), 55 states have call predecessors, (242), 32 states have call successors, (242) [2023-12-16 17:45:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 386 transitions. [2023-12-16 17:45:59,889 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 386 transitions. Word has length 583 [2023-12-16 17:45:59,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:59,889 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 386 transitions. [2023-12-16 17:45:59,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (24), 7 states have call predecessors, (24), 12 states have call successors, (24) [2023-12-16 17:45:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 386 transitions. [2023-12-16 17:45:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-16 17:45:59,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:59,893 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 24, 24, 23, 18, 16, 16, 16, 16, 16, 16, 15, 12, 12, 12, 12, 12, 12, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:59,902 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 17:46:00,095 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 17:46:00,095 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:00,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash -772663922, now seen corresponding path program 4 times [2023-12-16 17:46:00,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:00,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852615404] [2023-12-16 17:46:00,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:46:00,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:00,097 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 17:46:00,101 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 17:46:00,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:46:00,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:00,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:46:00,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4180 backedges. 145 proven. 736 refuted. 0 times theorem prover too weak. 3299 trivial. 0 not checked. [2023-12-16 17:46:00,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4180 backedges. 145 proven. 760 refuted. 0 times theorem prover too weak. 3275 trivial. 0 not checked. [2023-12-16 17:46:01,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:01,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852615404] [2023-12-16 17:46:01,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852615404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:01,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:01,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 20 [2023-12-16 17:46:01,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880908708] [2023-12-16 17:46:01,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:01,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 17:46:01,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:01,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 17:46:01,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-16 17:46:01,290 INFO L87 Difference]: Start difference. First operand 172 states and 386 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-16 17:46:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:01,590 INFO L93 Difference]: Finished difference Result 364 states and 1111 transitions. [2023-12-16 17:46:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:46:01,591 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) Word has length 358 [2023-12-16 17:46:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:01,594 INFO L225 Difference]: With dead ends: 364 [2023-12-16 17:46:01,594 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 17:46:01,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-12-16 17:46:01,597 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 23 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:01,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 282 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:46:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 17:46:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-16 17:46:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 114 states have (on average 1.087719298245614) internal successors, (124), 116 states have internal predecessors, (124), 36 states have call successors, (36), 12 states have call predecessors, (36), 43 states have return successors, (324), 65 states have call predecessors, (324), 36 states have call successors, (324) [2023-12-16 17:46:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 484 transitions. [2023-12-16 17:46:01,612 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 484 transitions. Word has length 358 [2023-12-16 17:46:01,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:01,613 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 484 transitions. [2023-12-16 17:46:01,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-16 17:46:01,613 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 484 transitions. [2023-12-16 17:46:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-16 17:46:01,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:01,616 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 20, 19, 18, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 9, 6, 6, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:01,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:01,828 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 17:46:01,829 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:01,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash 992752231, now seen corresponding path program 5 times [2023-12-16 17:46:01,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:01,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937959657] [2023-12-16 17:46:01,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:46:01,829 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 17:46:01,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:01,830 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 17:46:01,840 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 17:46:01,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-16 17:46:01,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:01,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:46:01,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2617 backedges. 1128 proven. 28 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2023-12-16 17:46:01,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2617 backedges. 190 proven. 411 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-16 17:46:02,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937959657] [2023-12-16 17:46:02,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937959657] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:02,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:02,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2023-12-16 17:46:02,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934287166] [2023-12-16 17:46:02,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:02,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 17:46:02,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:02,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 17:46:02,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-16 17:46:02,655 INFO L87 Difference]: Start difference. First operand 194 states and 484 transitions. Second operand has 13 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 10 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-16 17:46:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:02,871 INFO L93 Difference]: Finished difference Result 544 states and 2463 transitions. [2023-12-16 17:46:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:46:02,871 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 10 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) Word has length 288 [2023-12-16 17:46:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:02,882 INFO L225 Difference]: With dead ends: 544 [2023-12-16 17:46:02,883 INFO L226 Difference]: Without dead ends: 352 [2023-12-16 17:46:02,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:46:02,887 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:02,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 130 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:46:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-16 17:46:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 318. [2023-12-16 17:46:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 179 states have (on average 1.0670391061452513) internal successors, (191), 181 states have internal predecessors, (191), 64 states have call successors, (64), 13 states have call predecessors, (64), 74 states have return successors, (1001), 123 states have call predecessors, (1001), 64 states have call successors, (1001) [2023-12-16 17:46:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1256 transitions. [2023-12-16 17:46:02,967 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1256 transitions. Word has length 288 [2023-12-16 17:46:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:02,967 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 1256 transitions. [2023-12-16 17:46:02,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 10 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-16 17:46:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1256 transitions. [2023-12-16 17:46:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-16 17:46:02,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:02,978 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 30, 30, 27, 18, 17, 17, 17, 17, 17, 17, 17, 15, 15, 15, 15, 15, 15, 10, 3, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:02,980 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 17:46:03,180 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 17:46:03,180 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:03,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash -334233071, now seen corresponding path program 6 times [2023-12-16 17:46:03,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:03,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337645476] [2023-12-16 17:46:03,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:46:03,181 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 17:46:03,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:03,182 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:03,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 17:46:03,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-16 17:46:03,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:03,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:46:03,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5347 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 4517 trivial. 0 not checked. [2023-12-16 17:46:03,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:46:03,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:03,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337645476] [2023-12-16 17:46:03,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337645476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:46:03,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:46:03,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:46:03,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584138107] [2023-12-16 17:46:03,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:46:03,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:46:03,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:03,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:46:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:46:03,297 INFO L87 Difference]: Start difference. First operand 318 states and 1256 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 17:46:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:03,369 INFO L93 Difference]: Finished difference Result 504 states and 2343 transitions. [2023-12-16 17:46:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:46:03,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) Word has length 406 [2023-12-16 17:46:03,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:03,373 INFO L225 Difference]: With dead ends: 504 [2023-12-16 17:46:03,373 INFO L226 Difference]: Without dead ends: 171 [2023-12-16 17:46:03,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:46:03,380 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:03,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 64 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:46:03,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-16 17:46:03,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2023-12-16 17:46:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 32 states have call successors, (32), 9 states have call predecessors, (32), 33 states have return successors, (260), 56 states have call predecessors, (260), 32 states have call successors, (260) [2023-12-16 17:46:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 387 transitions. [2023-12-16 17:46:03,396 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 387 transitions. Word has length 406 [2023-12-16 17:46:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:03,397 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 387 transitions. [2023-12-16 17:46:03,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 17:46:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 387 transitions. [2023-12-16 17:46:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-12-16 17:46:03,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:03,400 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 43, 43, 38, 35, 23, 23, 23, 23, 23, 23, 21, 21, 21, 21, 21, 21, 17, 12, 8, 8, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:03,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:03,602 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:03,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash -567121904, now seen corresponding path program 7 times [2023-12-16 17:46:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927043281] [2023-12-16 17:46:03,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:46:03,603 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 17:46:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:03,689 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:03,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 17:46:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:46:03,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:46:03,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 10439 backedges. 375 proven. 1138 refuted. 0 times theorem prover too weak. 8926 trivial. 0 not checked. [2023-12-16 17:46:03,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10439 backedges. 375 proven. 1162 refuted. 0 times theorem prover too weak. 8902 trivial. 0 not checked. [2023-12-16 17:46:05,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:05,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927043281] [2023-12-16 17:46:05,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927043281] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:05,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:05,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 19 [2023-12-16 17:46:05,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213765889] [2023-12-16 17:46:05,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:05,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:46:05,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:46:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:46:05,342 INFO L87 Difference]: Start difference. First operand 156 states and 387 transitions. Second operand has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:46:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:05,724 INFO L93 Difference]: Finished difference Result 468 states and 2180 transitions. [2023-12-16 17:46:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 17:46:05,733 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) Word has length 566 [2023-12-16 17:46:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:05,740 INFO L225 Difference]: With dead ends: 468 [2023-12-16 17:46:05,740 INFO L226 Difference]: Without dead ends: 291 [2023-12-16 17:46:05,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1113 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 17:46:05,743 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:05,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 122 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:46:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-16 17:46:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 200. [2023-12-16 17:46:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 117 states have (on average 1.0683760683760684) internal successors, (125), 116 states have internal predecessors, (125), 43 states have call successors, (43), 14 states have call predecessors, (43), 39 states have return successors, (475), 69 states have call predecessors, (475), 43 states have call successors, (475) [2023-12-16 17:46:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 643 transitions. [2023-12-16 17:46:05,791 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 643 transitions. Word has length 566 [2023-12-16 17:46:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:05,791 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 643 transitions. [2023-12-16 17:46:05,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:46:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 643 transitions. [2023-12-16 17:46:05,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-12-16 17:46:05,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:05,796 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 50, 50, 43, 41, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 17, 16, 12, 7, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:05,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:06,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:06,003 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:06,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1864359228, now seen corresponding path program 8 times [2023-12-16 17:46:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292287185] [2023-12-16 17:46:06,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:46:06,004 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 17:46:06,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:06,005 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:06,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 17:46:06,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:46:06,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:06,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:46:06,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14010 backedges. 326 proven. 902 refuted. 0 times theorem prover too weak. 12782 trivial. 0 not checked. [2023-12-16 17:46:06,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14010 backedges. 326 proven. 912 refuted. 0 times theorem prover too weak. 12772 trivial. 0 not checked. [2023-12-16 17:46:07,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:07,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292287185] [2023-12-16 17:46:07,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292287185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:07,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:07,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-16 17:46:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035188529] [2023-12-16 17:46:07,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:07,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 17:46:07,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:07,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 17:46:07,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-16 17:46:07,701 INFO L87 Difference]: Start difference. First operand 200 states and 643 transitions. Second operand has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 16 states have internal predecessors, (50), 12 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 8 states have call predecessors, (19), 12 states have call successors, (19) [2023-12-16 17:46:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:07,924 INFO L93 Difference]: Finished difference Result 467 states and 2512 transitions. [2023-12-16 17:46:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:46:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 16 states have internal predecessors, (50), 12 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 8 states have call predecessors, (19), 12 states have call successors, (19) Word has length 654 [2023-12-16 17:46:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:07,930 INFO L225 Difference]: With dead ends: 467 [2023-12-16 17:46:07,930 INFO L226 Difference]: Without dead ends: 276 [2023-12-16 17:46:07,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1292 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:46:07,933 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:07,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 192 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:46:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-16 17:46:07,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 257. [2023-12-16 17:46:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 149 states have (on average 1.0536912751677852) internal successors, (157), 148 states have internal predecessors, (157), 52 states have call successors, (52), 14 states have call predecessors, (52), 55 states have return successors, (788), 94 states have call predecessors, (788), 52 states have call successors, (788) [2023-12-16 17:46:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 997 transitions. [2023-12-16 17:46:07,997 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 997 transitions. Word has length 654 [2023-12-16 17:46:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:07,998 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 997 transitions. [2023-12-16 17:46:07,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 16 states have internal predecessors, (50), 12 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 8 states have call predecessors, (19), 12 states have call successors, (19) [2023-12-16 17:46:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 997 transitions. [2023-12-16 17:46:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-12-16 17:46:08,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:08,005 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 63, 63, 58, 52, 36, 36, 36, 36, 36, 36, 31, 31, 31, 31, 31, 31, 27, 16, 14, 11, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:08,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:08,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:08,213 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:08,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:08,213 INFO L85 PathProgramCache]: Analyzing trace with hash -618912824, now seen corresponding path program 9 times [2023-12-16 17:46:08,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:08,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832315405] [2023-12-16 17:46:08,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:46:08,214 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 17:46:08,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:08,215 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:08,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 17:46:08,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-16 17:46:08,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:08,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:46:08,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 24300 backedges. 4252 proven. 14 refuted. 0 times theorem prover too weak. 20034 trivial. 0 not checked. [2023-12-16 17:46:08,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24300 backedges. 2021 proven. 102 refuted. 0 times theorem prover too weak. 22177 trivial. 0 not checked. [2023-12-16 17:46:10,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:10,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832315405] [2023-12-16 17:46:10,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832315405] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:10,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:10,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2023-12-16 17:46:10,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387626162] [2023-12-16 17:46:10,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:10,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 17:46:10,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 17:46:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-16 17:46:10,287 INFO L87 Difference]: Start difference. First operand 257 states and 997 transitions. Second operand has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 9 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2023-12-16 17:46:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:10,520 INFO L93 Difference]: Finished difference Result 721 states and 5718 transitions. [2023-12-16 17:46:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:46:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 9 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 856 [2023-12-16 17:46:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:10,539 INFO L225 Difference]: With dead ends: 721 [2023-12-16 17:46:10,539 INFO L226 Difference]: Without dead ends: 474 [2023-12-16 17:46:10,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1716 GetRequests, 1699 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:46:10,547 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:10,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 167 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:46:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-16 17:46:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 394. [2023-12-16 17:46:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 216 states have (on average 1.0416666666666667) internal successors, (225), 215 states have internal predecessors, (225), 90 states have call successors, (90), 15 states have call predecessors, (90), 87 states have return successors, (2224), 163 states have call predecessors, (2224), 90 states have call successors, (2224) [2023-12-16 17:46:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 2539 transitions. [2023-12-16 17:46:10,676 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 2539 transitions. Word has length 856 [2023-12-16 17:46:10,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:10,677 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 2539 transitions. [2023-12-16 17:46:10,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 9 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2023-12-16 17:46:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 2539 transitions. [2023-12-16 17:46:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2382 [2023-12-16 17:46:10,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:10,710 INFO L195 NwaCegarLoop]: trace histogram [200, 200, 177, 177, 154, 150, 100, 100, 100, 100, 100, 100, 88, 88, 88, 88, 88, 88, 66, 50, 46, 27, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:10,713 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 (23)] Ended with exit code 0 [2023-12-16 17:46:10,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:10,913 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:10,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1871406922, now seen corresponding path program 10 times [2023-12-16 17:46:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:10,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228499764] [2023-12-16 17:46:10,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:46:10,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:10,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:10,916 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:10,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 17:46:11,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:46:11,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:11,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:46:11,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 191194 backedges. 1244 proven. 5598 refuted. 0 times theorem prover too weak. 184352 trivial. 0 not checked. [2023-12-16 17:46:11,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 191194 backedges. 1244 proven. 5622 refuted. 0 times theorem prover too weak. 184328 trivial. 0 not checked. [2023-12-16 17:46:17,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228499764] [2023-12-16 17:46:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228499764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:17,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:17,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 19 [2023-12-16 17:46:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178548204] [2023-12-16 17:46:17,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:17,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:46:17,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:17,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:46:17,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:46:17,160 INFO L87 Difference]: Start difference. First operand 394 states and 2539 transitions. Second operand has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:46:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:17,684 INFO L93 Difference]: Finished difference Result 996 states and 8701 transitions. [2023-12-16 17:46:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 17:46:17,685 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) Word has length 2381 [2023-12-16 17:46:17,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:17,728 INFO L225 Difference]: With dead ends: 996 [2023-12-16 17:46:17,729 INFO L226 Difference]: Without dead ends: 621 [2023-12-16 17:46:17,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4776 GetRequests, 4743 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 17:46:17,738 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:17,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 175 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:46:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-12-16 17:46:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 423. [2023-12-16 17:46:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 231 states have (on average 1.0432900432900434) internal successors, (241), 230 states have internal predecessors, (241), 98 states have call successors, (98), 16 states have call predecessors, (98), 93 states have return successors, (2724), 176 states have call predecessors, (2724), 98 states have call successors, (2724) [2023-12-16 17:46:18,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 3063 transitions. [2023-12-16 17:46:18,030 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 3063 transitions. Word has length 2381 [2023-12-16 17:46:18,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:18,030 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 3063 transitions. [2023-12-16 17:46:18,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:46:18,030 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 3063 transitions. [2023-12-16 17:46:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1894 [2023-12-16 17:46:18,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:18,065 INFO L195 NwaCegarLoop]: trace histogram [157, 157, 142, 142, 124, 121, 78, 78, 78, 78, 78, 78, 71, 71, 71, 71, 71, 71, 53, 43, 33, 21, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:18,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:18,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:18,272 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:18,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash 355590163, now seen corresponding path program 11 times [2023-12-16 17:46:18,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:18,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647261009] [2023-12-16 17:46:18,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:46:18,274 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 17:46:18,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:18,275 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:18,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-16 17:46:18,589 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-12-16 17:46:18,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:18,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 17:46:18,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 120378 backedges. 61337 proven. 1899 refuted. 0 times theorem prover too weak. 57142 trivial. 0 not checked. [2023-12-16 17:46:18,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 120378 backedges. 2489 proven. 7032 refuted. 0 times theorem prover too weak. 110857 trivial. 0 not checked. [2023-12-16 17:46:23,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647261009] [2023-12-16 17:46:23,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647261009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:23,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:23,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23] total 26 [2023-12-16 17:46:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648688136] [2023-12-16 17:46:23,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:23,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 17:46:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 17:46:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2023-12-16 17:46:23,615 INFO L87 Difference]: Start difference. First operand 423 states and 3063 transitions. Second operand has 26 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 22 states have call successors, (34), 2 states have call predecessors, (34), 12 states have return successors, (44), 14 states have call predecessors, (44), 22 states have call successors, (44) [2023-12-16 17:46:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:24,426 INFO L93 Difference]: Finished difference Result 773 states and 7135 transitions. [2023-12-16 17:46:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 17:46:24,427 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 22 states have call successors, (34), 2 states have call predecessors, (34), 12 states have return successors, (44), 14 states have call predecessors, (44), 22 states have call successors, (44) Word has length 1893 [2023-12-16 17:46:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:24,439 INFO L225 Difference]: With dead ends: 773 [2023-12-16 17:46:24,439 INFO L226 Difference]: Without dead ends: 356 [2023-12-16 17:46:24,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3804 GetRequests, 3760 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1713, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 17:46:24,454 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:24,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 326 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:46:24,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-16 17:46:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 332. [2023-12-16 17:46:24,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 196 states have (on average 1.0714285714285714) internal successors, (210), 192 states have internal predecessors, (210), 70 states have call successors, (70), 23 states have call predecessors, (70), 65 states have return successors, (977), 116 states have call predecessors, (977), 70 states have call successors, (977) [2023-12-16 17:46:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 1257 transitions. [2023-12-16 17:46:24,525 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 1257 transitions. Word has length 1893 [2023-12-16 17:46:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:24,525 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 1257 transitions. [2023-12-16 17:46:24,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 22 states have call successors, (34), 2 states have call predecessors, (34), 12 states have return successors, (44), 14 states have call predecessors, (44), 22 states have call successors, (44) [2023-12-16 17:46:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 1257 transitions. [2023-12-16 17:46:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3354 [2023-12-16 17:46:24,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:24,582 INFO L195 NwaCegarLoop]: trace histogram [268, 268, 263, 263, 217, 212, 134, 134, 134, 134, 134, 134, 131, 131, 131, 131, 131, 131, 83, 81, 56, 46, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:24,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:24,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:24,787 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:24,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:24,788 INFO L85 PathProgramCache]: Analyzing trace with hash 534686315, now seen corresponding path program 12 times [2023-12-16 17:46:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:24,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043734190] [2023-12-16 17:46:24,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:46:24,790 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 17:46:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:24,791 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:24,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-16 17:46:26,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2023-12-16 17:46:26,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:26,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:46:26,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 379004 backedges. 55729 proven. 129 refuted. 0 times theorem prover too weak. 323146 trivial. 0 not checked. [2023-12-16 17:46:26,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 379004 backedges. 15140 proven. 736 refuted. 0 times theorem prover too weak. 363128 trivial. 0 not checked. [2023-12-16 17:46:34,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043734190] [2023-12-16 17:46:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043734190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:34,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:34,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 21 [2023-12-16 17:46:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944543460] [2023-12-16 17:46:34,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:34,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 17:46:34,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 17:46:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:46:34,344 INFO L87 Difference]: Start difference. First operand 332 states and 1257 transitions. Second operand has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 14 states have call successors, (26), 2 states have call predecessors, (26), 10 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) [2023-12-16 17:46:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:34,735 INFO L93 Difference]: Finished difference Result 687 states and 3881 transitions. [2023-12-16 17:46:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 17:46:34,735 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 14 states have call successors, (26), 2 states have call predecessors, (26), 10 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) Word has length 3353 [2023-12-16 17:46:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:34,744 INFO L225 Difference]: With dead ends: 687 [2023-12-16 17:46:34,744 INFO L226 Difference]: Without dead ends: 351 [2023-12-16 17:46:34,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6714 GetRequests, 6685 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-12-16 17:46:34,749 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 76 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:34,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 257 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:46:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-16 17:46:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 308. [2023-12-16 17:46:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 179 states have (on average 1.0670391061452513) internal successors, (191), 175 states have internal predecessors, (191), 72 states have call successors, (72), 23 states have call predecessors, (72), 56 states have return successors, (899), 109 states have call predecessors, (899), 72 states have call successors, (899) [2023-12-16 17:46:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 1162 transitions. [2023-12-16 17:46:34,843 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 1162 transitions. Word has length 3353 [2023-12-16 17:46:34,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:34,845 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 1162 transitions. [2023-12-16 17:46:34,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 14 states have call successors, (26), 2 states have call predecessors, (26), 10 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) [2023-12-16 17:46:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 1162 transitions. [2023-12-16 17:46:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2023-12-16 17:46:34,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:34,880 INFO L195 NwaCegarLoop]: trace histogram [135, 135, 134, 134, 109, 107, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 42, 40, 28, 25, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:34,889 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 (26)] Ended with exit code 0 [2023-12-16 17:46:35,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:35,089 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:35,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash 666788472, now seen corresponding path program 13 times [2023-12-16 17:46:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:35,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487656606] [2023-12-16 17:46:35,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:46:35,091 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 17:46:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:35,092 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:35,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-16 17:46:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:46:35,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:46:35,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:35,913 INFO L134 CoverageAnalysis]: Checked inductivity of 96647 backedges. 1469 proven. 3383 refuted. 0 times theorem prover too weak. 91795 trivial. 0 not checked. [2023-12-16 17:46:35,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 96647 backedges. 1469 proven. 3407 refuted. 0 times theorem prover too weak. 91771 trivial. 0 not checked. [2023-12-16 17:46:39,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:39,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487656606] [2023-12-16 17:46:39,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487656606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:39,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:39,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 19 [2023-12-16 17:46:39,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278564893] [2023-12-16 17:46:39,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:39,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:46:39,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:39,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:46:39,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:46:39,489 INFO L87 Difference]: Start difference. First operand 308 states and 1162 transitions. Second operand has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:46:39,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:39,843 INFO L93 Difference]: Finished difference Result 383 states and 1433 transitions. [2023-12-16 17:46:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 17:46:39,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) Word has length 1699 [2023-12-16 17:46:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:39,858 INFO L225 Difference]: With dead ends: 383 [2023-12-16 17:46:39,858 INFO L226 Difference]: Without dead ends: 360 [2023-12-16 17:46:39,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3412 GetRequests, 3379 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 17:46:39,859 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:39,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 148 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:46:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-16 17:46:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 321. [2023-12-16 17:46:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 189 states have (on average 1.0687830687830688) internal successors, (202), 185 states have internal predecessors, (202), 73 states have call successors, (73), 25 states have call predecessors, (73), 58 states have return successors, (791), 110 states have call predecessors, (791), 73 states have call successors, (791) [2023-12-16 17:46:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 1066 transitions. [2023-12-16 17:46:39,909 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 1066 transitions. Word has length 1699 [2023-12-16 17:46:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:39,910 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 1066 transitions. [2023-12-16 17:46:39,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:46:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 1066 transitions. [2023-12-16 17:46:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-16 17:46:39,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:39,918 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 38, 37, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 15, 14, 9, 9, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:39,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:40,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:40,133 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:40,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:40,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1458262391, now seen corresponding path program 14 times [2023-12-16 17:46:40,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485435660] [2023-12-16 17:46:40,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:46:40,134 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 17:46:40,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:40,135 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:40,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-16 17:46:40,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:46:40,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:40,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:46:40,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11351 backedges. 594 proven. 994 refuted. 0 times theorem prover too weak. 9763 trivial. 0 not checked. [2023-12-16 17:46:40,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11351 backedges. 594 proven. 1018 refuted. 0 times theorem prover too weak. 9739 trivial. 0 not checked. [2023-12-16 17:46:41,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485435660] [2023-12-16 17:46:41,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485435660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:41,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:41,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 19 [2023-12-16 17:46:41,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395995504] [2023-12-16 17:46:41,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:46:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:46:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:46:41,827 INFO L87 Difference]: Start difference. First operand 321 states and 1066 transitions. Second operand has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:46:42,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:42,243 INFO L93 Difference]: Finished difference Result 367 states and 1403 transitions. [2023-12-16 17:46:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 17:46:42,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) Word has length 590 [2023-12-16 17:46:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:42,246 INFO L225 Difference]: With dead ends: 367 [2023-12-16 17:46:42,246 INFO L226 Difference]: Without dead ends: 147 [2023-12-16 17:46:42,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1194 GetRequests, 1161 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 17:46:42,249 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:42,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 169 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:46:42,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-16 17:46:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2023-12-16 17:46:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 95 states have (on average 1.105263157894737) internal successors, (105), 92 states have internal predecessors, (105), 28 states have call successors, (28), 21 states have call predecessors, (28), 17 states have return successors, (32), 27 states have call predecessors, (32), 28 states have call successors, (32) [2023-12-16 17:46:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 165 transitions. [2023-12-16 17:46:42,262 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 165 transitions. Word has length 590 [2023-12-16 17:46:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:42,262 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 165 transitions. [2023-12-16 17:46:42,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 19 states have internal predecessors, (60), 16 states have call successors, (22), 1 states have call predecessors, (22), 8 states have return successors, (26), 11 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:46:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 165 transitions. [2023-12-16 17:46:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-16 17:46:42,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:42,264 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:42,282 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 (28)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:42,471 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:42,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash -708195434, now seen corresponding path program 15 times [2023-12-16 17:46:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556023848] [2023-12-16 17:46:42,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:46:42,472 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 17:46:42,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:42,473 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:46:42,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-16 17:46:42,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-12-16 17:46:42,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:42,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-16 17:46:42,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5826 backedges. 0 proven. 1882 refuted. 0 times theorem prover too weak. 3944 trivial. 0 not checked. [2023-12-16 17:46:43,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5826 backedges. 0 proven. 1882 refuted. 0 times theorem prover too weak. 3944 trivial. 0 not checked. [2023-12-16 17:46:46,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556023848] [2023-12-16 17:46:46,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556023848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:46,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:46,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2023-12-16 17:46:46,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435118471] [2023-12-16 17:46:46,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:46,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-16 17:46:46,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:46,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-16 17:46:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 17:46:46,694 INFO L87 Difference]: Start difference. First operand 141 states and 165 transitions. Second operand has 52 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 17 states have internal predecessors, (52), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) [2023-12-16 17:46:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:47,101 INFO L93 Difference]: Finished difference Result 141 states and 165 transitions. [2023-12-16 17:46:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 17:46:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 17 states have internal predecessors, (52), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) Word has length 426 [2023-12-16 17:46:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:47,102 INFO L225 Difference]: With dead ends: 141 [2023-12-16 17:46:47,102 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 17:46:47,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 17:46:47,103 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:47,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2104 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:46:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 17:46:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 17:46:47,104 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 17:46:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 17:46:47,104 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 426 [2023-12-16 17:46:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:47,104 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 17:46:47,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 17 states have internal predecessors, (52), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) [2023-12-16 17:46:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 17:46:47,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 17:46:47,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:46:47,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:47,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:46:47,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-16 17:46:48,389 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-36-16-2-8-2-10-2-9-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-20-14-3-7-2-7-1 context. [2023-12-16 17:46:48,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 17:46:48,394 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:46:48,399 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-16 17:46:48,401 INFO L158 Benchmark]: Toolchain (without parser) took 65190.23ms. Allocated memory was 199.2MB in the beginning and 855.6MB in the end (delta: 656.4MB). Free memory was 142.4MB in the beginning and 688.2MB in the end (delta: -545.8MB). Peak memory consumption was 111.7MB. Max. memory is 8.0GB. [2023-12-16 17:46:48,401 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory was 152.8MB in the beginning and 152.8MB in the end (delta: 66.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:46:48,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.69ms. Allocated memory is still 199.2MB. Free memory was 142.4MB in the beginning and 131.1MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:46:48,402 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.41ms. Allocated memory is still 199.2MB. Free memory was 131.1MB in the beginning and 129.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:46:48,402 INFO L158 Benchmark]: Boogie Preprocessor took 21.63ms. Allocated memory is still 199.2MB. Free memory was 129.8MB in the beginning and 128.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:46:48,402 INFO L158 Benchmark]: RCFGBuilder took 303.97ms. Allocated memory is still 199.2MB. Free memory was 128.0MB in the beginning and 116.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:46:48,404 INFO L158 Benchmark]: TraceAbstraction took 64658.28ms. Allocated memory was 199.2MB in the beginning and 855.6MB in the end (delta: 656.4MB). Free memory was 115.9MB in the beginning and 688.2MB in the end (delta: -572.3MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. [2023-12-16 17:46:48,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory was 152.8MB in the beginning and 152.8MB in the end (delta: 66.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.69ms. Allocated memory is still 199.2MB. Free memory was 142.4MB in the beginning and 131.1MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.41ms. Allocated memory is still 199.2MB. Free memory was 131.1MB in the beginning and 129.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.63ms. Allocated memory is still 199.2MB. Free memory was 129.8MB in the beginning and 128.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 303.97ms. Allocated memory is still 199.2MB. Free memory was 128.0MB in the beginning and 116.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 64658.28ms. Allocated memory was 199.2MB in the beginning and 855.6MB in the end (delta: 656.4MB). Free memory was 115.9MB in the beginning and 688.2MB in the end (delta: -572.3MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∧-3-2-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-3-5-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown