java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1251_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:35:38,797 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:35:38,799 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:35:38,811 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:35:38,811 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:35:38,812 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:35:38,814 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:35:38,816 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:35:38,817 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:35:38,818 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:35:38,819 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:35:38,819 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:35:38,820 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:35:38,822 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:35:38,823 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:35:38,823 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:35:38,824 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:35:38,826 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:35:38,828 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:35:38,830 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:35:38,831 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:35:38,832 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:35:38,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:35:38,835 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:35:38,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:35:38,837 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:35:38,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:35:38,838 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:35:38,839 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:35:38,841 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:35:38,841 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:35:38,842 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:35:38,842 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:35:38,842 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:35:38,843 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:35:38,844 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:35:38,844 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 16:35:38,866 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:35:38,867 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:35:38,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:35:38,869 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:35:38,870 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:35:38,870 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:35:38,870 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:35:38,871 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:35:38,871 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:35:38,871 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:35:38,871 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:35:38,871 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:35:38,871 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:35:38,872 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:35:38,872 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:35:38,872 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:35:38,872 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:35:38,872 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:35:38,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:35:38,873 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:35:38,873 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:35:38,873 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:35:38,874 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:35:38,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:35:38,875 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:35:38,875 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:35:38,875 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:35:38,875 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:35:38,875 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:35:38,876 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:35:38,876 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:35:38,876 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:35:38,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:35:38,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:35:38,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:35:38,961 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:35:38,961 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:35:38,962 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-09-19 16:35:39,353 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc03be25e/881c15ee75e54de59e53e150c07e1eaa/FLAGbf67a91f5 [2018-09-19 16:35:39,514 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:35:39,515 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-09-19 16:35:39,524 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc03be25e/881c15ee75e54de59e53e150c07e1eaa/FLAGbf67a91f5 [2018-09-19 16:35:39,539 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc03be25e/881c15ee75e54de59e53e150c07e1eaa [2018-09-19 16:35:39,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:35:39,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:35:39,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:35:39,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:35:39,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:35:39,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c85bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39, skipping insertion in model container [2018-09-19 16:35:39,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,579 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:35:39,841 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:35:39,861 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:35:39,877 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:35:39,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39 WrapperNode [2018-09-19 16:35:39,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:35:39,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:35:39,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:35:39,918 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:35:39,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:40,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:35:40,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:35:40,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:35:40,005 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:35:40,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:35:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:35:40,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:35:40,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-19 16:35:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-19 16:35:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-19 16:35:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:35:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:35:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-19 16:35:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-19 16:35:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:35:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-19 16:35:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:35:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:35:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-19 16:35:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-19 16:35:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:35:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:35:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:35:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:35:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:35:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-19 16:35:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-19 16:35:40,815 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:35:40,836 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:35:40,928 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:35:40,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:35:40 BoogieIcfgContainer [2018-09-19 16:35:40,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:35:40,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:35:40,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:35:40,934 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:35:40,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:35:39" (1/3) ... [2018-09-19 16:35:40,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd882f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:35:40, skipping insertion in model container [2018-09-19 16:35:40,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (2/3) ... [2018-09-19 16:35:40,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd882f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:35:40, skipping insertion in model container [2018-09-19 16:35:40,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:35:40" (3/3) ... [2018-09-19 16:35:40,939 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251_true-unreach-call.c [2018-09-19 16:35:40,949 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:35:40,959 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-09-19 16:35:41,005 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:35:41,005 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:35:41,006 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:35:41,006 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:35:41,006 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:35:41,007 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:35:41,007 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:35:41,007 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:35:41,007 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:35:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2018-09-19 16:35:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-19 16:35:41,040 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:41,041 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:41,044 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:41,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1620863984, now seen corresponding path program 1 times [2018-09-19 16:35:41,055 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:41,056 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:41,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:41,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:41,179 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:41,196 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:41,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:35:41,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:35:41,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:35:41,221 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:35:41,224 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 2 states. [2018-09-19 16:35:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:41,259 INFO L93 Difference]: Finished difference Result 121 states and 162 transitions. [2018-09-19 16:35:41,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:35:41,261 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-09-19 16:35:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:41,272 INFO L225 Difference]: With dead ends: 121 [2018-09-19 16:35:41,272 INFO L226 Difference]: Without dead ends: 67 [2018-09-19 16:35:41,277 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:35:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-19 16:35:41,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-19 16:35:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-19 16:35:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2018-09-19 16:35:41,341 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 35 [2018-09-19 16:35:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:41,343 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2018-09-19 16:35:41,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:35:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2018-09-19 16:35:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-19 16:35:41,348 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:41,350 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:41,351 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash -120307456, now seen corresponding path program 1 times [2018-09-19 16:35:41,352 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:41,353 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:41,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:41,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:41,514 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:41,527 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:41,528 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:41,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:41,533 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:41,533 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:41,534 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 4 states. [2018-09-19 16:35:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:41,747 INFO L93 Difference]: Finished difference Result 124 states and 159 transitions. [2018-09-19 16:35:41,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 16:35:41,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-09-19 16:35:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:41,752 INFO L225 Difference]: With dead ends: 124 [2018-09-19 16:35:41,752 INFO L226 Difference]: Without dead ends: 76 [2018-09-19 16:35:41,754 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-19 16:35:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-19 16:35:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2018-09-19 16:35:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-19 16:35:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2018-09-19 16:35:41,781 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 44 [2018-09-19 16:35:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:41,782 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2018-09-19 16:35:41,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2018-09-19 16:35:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-19 16:35:41,785 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:41,786 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:41,786 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:41,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1112572795, now seen corresponding path program 1 times [2018-09-19 16:35:41,787 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:41,787 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:41,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:41,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-19 16:35:41,938 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:41,949 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:41,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:41,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:41,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:41,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:41,951 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand 4 states. [2018-09-19 16:35:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:42,058 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2018-09-19 16:35:42,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:42,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-09-19 16:35:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:42,066 INFO L225 Difference]: With dead ends: 94 [2018-09-19 16:35:42,067 INFO L226 Difference]: Without dead ends: 72 [2018-09-19 16:35:42,068 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-09-19 16:35:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-09-19 16:35:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-19 16:35:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2018-09-19 16:35:42,088 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 49 [2018-09-19 16:35:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:42,089 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2018-09-19 16:35:42,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2018-09-19 16:35:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:35:42,092 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:42,092 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:42,095 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:42,095 INFO L82 PathProgramCache]: Analyzing trace with hash 665725020, now seen corresponding path program 1 times [2018-09-19 16:35:42,096 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:42,096 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:42,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:42,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-19 16:35:42,301 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:42,314 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:42,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:42,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:42,315 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:42,315 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:42,316 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 4 states. [2018-09-19 16:35:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:42,360 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2018-09-19 16:35:42,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:42,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-09-19 16:35:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:42,362 INFO L225 Difference]: With dead ends: 97 [2018-09-19 16:35:42,362 INFO L226 Difference]: Without dead ends: 75 [2018-09-19 16:35:42,363 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-19 16:35:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2018-09-19 16:35:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-19 16:35:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2018-09-19 16:35:42,374 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 50 [2018-09-19 16:35:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:42,375 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2018-09-19 16:35:42,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:42,375 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2018-09-19 16:35:42,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:35:42,377 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:42,377 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:42,377 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:42,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1433585823, now seen corresponding path program 1 times [2018-09-19 16:35:42,378 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:42,378 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:42,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:42,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-19 16:35:42,586 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:42,603 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:42,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:42,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:42,605 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:42,605 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:42,605 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 4 states. [2018-09-19 16:35:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:42,748 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2018-09-19 16:35:42,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:42,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-19 16:35:42,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:42,757 INFO L225 Difference]: With dead ends: 97 [2018-09-19 16:35:42,757 INFO L226 Difference]: Without dead ends: 75 [2018-09-19 16:35:42,758 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-19 16:35:42,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2018-09-19 16:35:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-19 16:35:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2018-09-19 16:35:42,777 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 51 [2018-09-19 16:35:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:42,778 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2018-09-19 16:35:42,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2018-09-19 16:35:42,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:35:42,786 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:42,788 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:42,789 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:42,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1202706880, now seen corresponding path program 1 times [2018-09-19 16:35:42,790 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:42,790 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:42,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:42,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-19 16:35:42,940 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:42,953 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:42,954 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:42,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:42,955 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:42,955 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:42,956 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 4 states. [2018-09-19 16:35:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:43,013 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2018-09-19 16:35:43,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:43,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-09-19 16:35:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:43,018 INFO L225 Difference]: With dead ends: 97 [2018-09-19 16:35:43,018 INFO L226 Difference]: Without dead ends: 75 [2018-09-19 16:35:43,019 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-19 16:35:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2018-09-19 16:35:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-19 16:35:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2018-09-19 16:35:43,029 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 52 [2018-09-19 16:35:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:43,030 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2018-09-19 16:35:43,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2018-09-19 16:35:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:35:43,032 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:43,032 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:43,032 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:43,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1584708607, now seen corresponding path program 1 times [2018-09-19 16:35:43,033 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:43,033 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:43,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:43,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:43,259 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:35:43,612 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-19 16:35:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-19 16:35:43,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:35:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-19 16:35:44,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:35:44,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-09-19 16:35:44,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 16:35:44,477 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 16:35:44,477 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:35:44,483 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 13 states. [2018-09-19 16:35:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:45,430 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2018-09-19 16:35:45,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:35:45,431 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2018-09-19 16:35:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:45,433 INFO L225 Difference]: With dead ends: 112 [2018-09-19 16:35:45,433 INFO L226 Difference]: Without dead ends: 98 [2018-09-19 16:35:45,434 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-09-19 16:35:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-19 16:35:45,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2018-09-19 16:35:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-19 16:35:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 109 transitions. [2018-09-19 16:35:45,446 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 109 transitions. Word has length 52 [2018-09-19 16:35:45,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:45,447 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 109 transitions. [2018-09-19 16:35:45,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 16:35:45,447 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 109 transitions. [2018-09-19 16:35:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-19 16:35:45,449 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:45,449 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:45,449 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash 469427552, now seen corresponding path program 1 times [2018-09-19 16:35:45,450 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:45,450 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:45,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:45,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-19 16:35:45,660 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:45,674 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:45,674 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:35:45,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:35:45,675 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:35:45,675 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:35:45,676 INFO L87 Difference]: Start difference. First operand 84 states and 109 transitions. Second operand 8 states. [2018-09-19 16:35:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:46,188 INFO L93 Difference]: Finished difference Result 149 states and 190 transitions. [2018-09-19 16:35:46,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:35:46,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2018-09-19 16:35:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:46,190 INFO L225 Difference]: With dead ends: 149 [2018-09-19 16:35:46,190 INFO L226 Difference]: Without dead ends: 97 [2018-09-19 16:35:46,191 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:35:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-19 16:35:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2018-09-19 16:35:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-19 16:35:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 108 transitions. [2018-09-19 16:35:46,203 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 108 transitions. Word has length 54 [2018-09-19 16:35:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:46,203 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 108 transitions. [2018-09-19 16:35:46,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:35:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 108 transitions. [2018-09-19 16:35:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-19 16:35:46,205 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:46,205 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:46,205 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:46,206 INFO L82 PathProgramCache]: Analyzing trace with hash -601784237, now seen corresponding path program 1 times [2018-09-19 16:35:46,206 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:46,206 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:46,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:46,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:35:46,281 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:46,291 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:46,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 16:35:46,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 16:35:46,292 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 16:35:46,292 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 16:35:46,293 INFO L87 Difference]: Start difference. First operand 84 states and 108 transitions. Second operand 3 states. [2018-09-19 16:35:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:46,332 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2018-09-19 16:35:46,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 16:35:46,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-09-19 16:35:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:46,333 INFO L225 Difference]: With dead ends: 87 [2018-09-19 16:35:46,334 INFO L226 Difference]: Without dead ends: 85 [2018-09-19 16:35:46,334 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 16:35:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-19 16:35:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-19 16:35:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-19 16:35:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2018-09-19 16:35:46,345 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 59 [2018-09-19 16:35:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:46,346 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2018-09-19 16:35:46,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 16:35:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2018-09-19 16:35:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-19 16:35:46,347 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:46,348 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:46,348 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:46,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1339775315, now seen corresponding path program 1 times [2018-09-19 16:35:46,349 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:46,349 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:46,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:46,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:46,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:35:47,186 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-19 16:35:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:47,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:35:47,500 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-09-19 16:35:47,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-19 16:35:47,500 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-19 16:35:47,501 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-09-19 16:35:47,501 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 19 states. [2018-09-19 16:35:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:49,119 INFO L93 Difference]: Finished difference Result 124 states and 159 transitions. [2018-09-19 16:35:49,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:35:49,120 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2018-09-19 16:35:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:49,122 INFO L225 Difference]: With dead ends: 124 [2018-09-19 16:35:49,123 INFO L226 Difference]: Without dead ends: 122 [2018-09-19 16:35:49,124 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-09-19 16:35:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-09-19 16:35:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 95. [2018-09-19 16:35:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-19 16:35:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2018-09-19 16:35:49,138 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 57 [2018-09-19 16:35:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:49,139 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2018-09-19 16:35:49,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-19 16:35:49,139 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2018-09-19 16:35:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-19 16:35:49,141 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:49,141 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:49,142 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:49,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1845408357, now seen corresponding path program 1 times [2018-09-19 16:35:49,142 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:49,142 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:49,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:49,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-19 16:35:49,346 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:35:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:35:49,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:35:49,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-09-19 16:35:49,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 16:35:49,698 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 16:35:49,698 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:35:49,699 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand 12 states. [2018-09-19 16:35:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:50,392 INFO L93 Difference]: Finished difference Result 121 states and 154 transitions. [2018-09-19 16:35:50,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:35:50,394 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2018-09-19 16:35:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:50,395 INFO L225 Difference]: With dead ends: 121 [2018-09-19 16:35:50,395 INFO L226 Difference]: Without dead ends: 105 [2018-09-19 16:35:50,396 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:35:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-19 16:35:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2018-09-19 16:35:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-19 16:35:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2018-09-19 16:35:50,410 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 64 [2018-09-19 16:35:50,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:50,411 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2018-09-19 16:35:50,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 16:35:50,411 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2018-09-19 16:35:50,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-19 16:35:50,413 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:50,413 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:50,413 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash -860151597, now seen corresponding path program 1 times [2018-09-19 16:35:50,414 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:50,414 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:50,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:50,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-09-19 16:35:50,656 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:35:51,801 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:35:51,925 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:35:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:35:51,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:35:51,995 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2018-09-19 16:35:51,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:35:51,995 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:35:51,995 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:35:51,996 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand 14 states. [2018-09-19 16:35:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:53,006 INFO L93 Difference]: Finished difference Result 158 states and 198 transitions. [2018-09-19 16:35:53,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:35:53,007 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2018-09-19 16:35:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:53,008 INFO L225 Difference]: With dead ends: 158 [2018-09-19 16:35:53,009 INFO L226 Difference]: Without dead ends: 97 [2018-09-19 16:35:53,009 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:35:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-19 16:35:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2018-09-19 16:35:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-19 16:35:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2018-09-19 16:35:53,019 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 64 [2018-09-19 16:35:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:53,019 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2018-09-19 16:35:53,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:35:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2018-09-19 16:35:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-19 16:35:53,021 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:53,021 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:53,021 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash -942132985, now seen corresponding path program 1 times [2018-09-19 16:35:53,022 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:53,022 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:53,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:53,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:35:53,290 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:35:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:35:53,576 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:35:53,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-09-19 16:35:53,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 16:35:53,577 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 16:35:53,577 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:35:53,578 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand 12 states. [2018-09-19 16:35:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:54,027 INFO L93 Difference]: Finished difference Result 100 states and 123 transitions. [2018-09-19 16:35:54,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:35:54,028 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-09-19 16:35:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:54,030 INFO L225 Difference]: With dead ends: 100 [2018-09-19 16:35:54,030 INFO L226 Difference]: Without dead ends: 97 [2018-09-19 16:35:54,031 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:35:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-19 16:35:54,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2018-09-19 16:35:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-19 16:35:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 114 transitions. [2018-09-19 16:35:54,041 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 114 transitions. Word has length 66 [2018-09-19 16:35:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:54,041 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 114 transitions. [2018-09-19 16:35:54,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 16:35:54,042 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 114 transitions. [2018-09-19 16:35:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-19 16:35:54,043 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:54,043 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:54,044 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2047519735, now seen corresponding path program 1 times [2018-09-19 16:35:54,044 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:54,044 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:54,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:54,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:54,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:35:54,278 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:35:54,279 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:35:54,282 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:35:54,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:35:54,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:35:54,349 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:35:54,354 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:35:54,354 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:35:54,358 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:35:54,364 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:35:54,364 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:35:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:35:54,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:35:55,464 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-09-19 16:35:55,570 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:35:55,827 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:35:55,989 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:35:56,091 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-09-19 16:35:56,607 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-09-19 16:35:57,005 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-19 16:35:57,005 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-19 16:35:57,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:57,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:57,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:35:57,211 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:35:57,211 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:35:57,215 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:35:57,224 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:35:57,225 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:35:57,229 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:35:57,232 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:35:57,232 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:35:57,236 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:35:57,240 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:35:57,240 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:35:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:57,420 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:35:57,690 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-09-19 16:35:57,999 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-09-19 16:35:58,126 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:35:58,243 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:35:58,518 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:35:58,847 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-09-19 16:35:59,205 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:35:59,206 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 19 [2018-09-19 16:35:59,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-19 16:35:59,206 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-19 16:35:59,207 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:35:59,207 INFO L87 Difference]: Start difference. First operand 91 states and 114 transitions. Second operand 19 states. [2018-09-19 16:36:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:02,797 INFO L93 Difference]: Finished difference Result 139 states and 179 transitions. [2018-09-19 16:36:02,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 16:36:02,798 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 71 [2018-09-19 16:36:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:02,800 INFO L225 Difference]: With dead ends: 139 [2018-09-19 16:36:02,801 INFO L226 Difference]: Without dead ends: 108 [2018-09-19 16:36:02,802 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 170 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2018-09-19 16:36:02,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-19 16:36:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2018-09-19 16:36:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-19 16:36:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2018-09-19 16:36:02,812 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 71 [2018-09-19 16:36:02,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:02,812 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2018-09-19 16:36:02,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-19 16:36:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2018-09-19 16:36:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-19 16:36:02,813 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:02,814 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:02,814 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash -330821267, now seen corresponding path program 1 times [2018-09-19 16:36:02,814 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:02,815 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:36:02,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:02,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:36:02,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:36:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:36:03,359 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:36:03,359 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-09-19 16:36:03,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 16:36:03,360 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 16:36:03,360 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:36:03,360 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand 13 states. [2018-09-19 16:36:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:03,866 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2018-09-19 16:36:03,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:36:03,867 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2018-09-19 16:36:03,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:03,869 INFO L225 Difference]: With dead ends: 107 [2018-09-19 16:36:03,869 INFO L226 Difference]: Without dead ends: 86 [2018-09-19 16:36:03,870 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-09-19 16:36:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-09-19 16:36:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2018-09-19 16:36:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-19 16:36:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2018-09-19 16:36:03,879 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 64 [2018-09-19 16:36:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:03,879 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2018-09-19 16:36:03,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 16:36:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2018-09-19 16:36:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-19 16:36:03,881 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:03,881 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:03,881 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:03,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2091391259, now seen corresponding path program 1 times [2018-09-19 16:36:03,882 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:03,882 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:03,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:03,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:36:04,026 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:04,036 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:04,036 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:36:04,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:36:04,037 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:36:04,037 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:04,037 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand 4 states. [2018-09-19 16:36:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:04,102 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2018-09-19 16:36:04,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:36:04,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2018-09-19 16:36:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:04,104 INFO L225 Difference]: With dead ends: 118 [2018-09-19 16:36:04,104 INFO L226 Difference]: Without dead ends: 89 [2018-09-19 16:36:04,105 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:04,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-19 16:36:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-19 16:36:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-19 16:36:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2018-09-19 16:36:04,119 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 70 [2018-09-19 16:36:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:04,120 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2018-09-19 16:36:04,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:36:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2018-09-19 16:36:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-19 16:36:04,124 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:04,124 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:04,125 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:04,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1302802768, now seen corresponding path program 1 times [2018-09-19 16:36:04,125 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:04,126 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:04,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:04,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:36:04,208 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:04,217 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:04,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:36:04,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:36:04,218 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:36:04,219 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:04,219 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 4 states. [2018-09-19 16:36:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:04,244 INFO L93 Difference]: Finished difference Result 122 states and 150 transitions. [2018-09-19 16:36:04,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:36:04,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-09-19 16:36:04,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:04,251 INFO L225 Difference]: With dead ends: 122 [2018-09-19 16:36:04,251 INFO L226 Difference]: Without dead ends: 93 [2018-09-19 16:36:04,252 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-19 16:36:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-19 16:36:04,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-19 16:36:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2018-09-19 16:36:04,263 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 71 [2018-09-19 16:36:04,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:04,264 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2018-09-19 16:36:04,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:36:04,264 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2018-09-19 16:36:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-19 16:36:04,265 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:04,265 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:04,266 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:04,266 INFO L82 PathProgramCache]: Analyzing trace with hash 481222112, now seen corresponding path program 1 times [2018-09-19 16:36:04,268 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:04,268 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:04,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:04,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:36:04,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:36:04,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-19 16:36:04,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-19 16:36:04,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:04,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:36:04,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:36:05,067 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-19 16:36:05,330 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:36:05,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-19 16:36:05,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:36:05,331 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:36:05,331 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:36:05,331 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 8 states. [2018-09-19 16:36:06,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:06,098 INFO L93 Difference]: Finished difference Result 104 states and 126 transitions. [2018-09-19 16:36:06,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:36:06,099 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2018-09-19 16:36:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:06,101 INFO L225 Difference]: With dead ends: 104 [2018-09-19 16:36:06,101 INFO L226 Difference]: Without dead ends: 92 [2018-09-19 16:36:06,102 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:36:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-09-19 16:36:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-09-19 16:36:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-09-19 16:36:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2018-09-19 16:36:06,110 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 72 [2018-09-19 16:36:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:06,110 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2018-09-19 16:36:06,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:36:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2018-09-19 16:36:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-19 16:36:06,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:06,112 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:06,112 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:06,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1512922594, now seen corresponding path program 1 times [2018-09-19 16:36:06,113 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:06,113 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:36:06,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:06,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:06,220 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:36:06,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:36:06,224 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:06,227 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:06,237 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:06,238 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:06,253 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:36:06,257 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:36:06,258 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:06,261 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:06,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:06,293 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-19 16:36:06,661 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:06,672 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:06,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 16:36:06,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 16:36:06,673 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 16:36:06,673 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:36:06,673 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand 13 states. [2018-09-19 16:36:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:07,880 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2018-09-19 16:36:07,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:36:07,881 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2018-09-19 16:36:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:07,883 INFO L225 Difference]: With dead ends: 129 [2018-09-19 16:36:07,883 INFO L226 Difference]: Without dead ends: 115 [2018-09-19 16:36:07,884 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:36:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-19 16:36:07,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2018-09-19 16:36:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-09-19 16:36:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2018-09-19 16:36:07,894 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 72 [2018-09-19 16:36:07,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:07,894 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2018-09-19 16:36:07,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 16:36:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2018-09-19 16:36:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-19 16:36:07,896 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:07,896 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:07,896 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:07,896 INFO L82 PathProgramCache]: Analyzing trace with hash -783932105, now seen corresponding path program 1 times [2018-09-19 16:36:07,897 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:07,897 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:07,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:07,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:36:07,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:07,990 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:07,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:36:07,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:36:07,991 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:36:07,991 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:07,992 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand 4 states. [2018-09-19 16:36:08,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:08,078 INFO L93 Difference]: Finished difference Result 129 states and 159 transitions. [2018-09-19 16:36:08,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:36:08,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-09-19 16:36:08,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:08,080 INFO L225 Difference]: With dead ends: 129 [2018-09-19 16:36:08,080 INFO L226 Difference]: Without dead ends: 100 [2018-09-19 16:36:08,081 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-09-19 16:36:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2018-09-19 16:36:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-09-19 16:36:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2018-09-19 16:36:08,092 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 72 [2018-09-19 16:36:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:08,093 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2018-09-19 16:36:08,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:36:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2018-09-19 16:36:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-19 16:36:08,094 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:08,094 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:08,095 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:08,095 INFO L82 PathProgramCache]: Analyzing trace with hash 841762419, now seen corresponding path program 1 times [2018-09-19 16:36:08,095 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:08,095 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:08,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:08,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:08,402 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:36:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-09-19 16:36:08,744 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:36:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-09-19 16:36:09,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:36:09,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-09-19 16:36:09,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-19 16:36:09,290 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-19 16:36:09,290 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:36:09,290 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand 21 states. [2018-09-19 16:36:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:10,438 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2018-09-19 16:36:10,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:36:10,438 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 73 [2018-09-19 16:36:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:10,440 INFO L225 Difference]: With dead ends: 113 [2018-09-19 16:36:10,440 INFO L226 Difference]: Without dead ends: 99 [2018-09-19 16:36:10,441 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2018-09-19 16:36:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-19 16:36:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2018-09-19 16:36:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-09-19 16:36:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2018-09-19 16:36:10,449 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 73 [2018-09-19 16:36:10,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:10,449 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2018-09-19 16:36:10,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-19 16:36:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2018-09-19 16:36:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-19 16:36:10,450 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:10,450 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:10,450 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash 780859660, now seen corresponding path program 1 times [2018-09-19 16:36:10,451 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:10,451 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:36:10,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:10,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-19 16:36:10,539 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:10,549 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:10,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:36:10,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:36:10,550 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:36:10,550 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:10,550 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand 4 states. [2018-09-19 16:36:10,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:10,575 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2018-09-19 16:36:10,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:36:10,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-09-19 16:36:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:10,578 INFO L225 Difference]: With dead ends: 119 [2018-09-19 16:36:10,578 INFO L226 Difference]: Without dead ends: 89 [2018-09-19 16:36:10,579 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:10,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-19 16:36:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2018-09-19 16:36:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-09-19 16:36:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2018-09-19 16:36:10,586 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 73 [2018-09-19 16:36:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:10,587 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2018-09-19 16:36:10,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:36:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2018-09-19 16:36:10,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-19 16:36:10,588 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:10,588 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:10,588 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:10,588 INFO L82 PathProgramCache]: Analyzing trace with hash 372035435, now seen corresponding path program 1 times [2018-09-19 16:36:10,589 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:10,589 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:36:10,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:10,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:10,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:36:10,887 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:36:10,888 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:10,891 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:10,900 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:10,900 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:10,933 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:36:10,936 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:36:10,936 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:10,939 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:10,943 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:10,943 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:11,264 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-09-19 16:36:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-19 16:36:11,541 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:11,557 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:11,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-19 16:36:11,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-19 16:36:11,558 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-19 16:36:11,558 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:36:11,558 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand 17 states. [2018-09-19 16:36:13,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:13,907 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-09-19 16:36:13,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 16:36:13,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2018-09-19 16:36:13,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:13,909 INFO L225 Difference]: With dead ends: 115 [2018-09-19 16:36:13,910 INFO L226 Difference]: Without dead ends: 76 [2018-09-19 16:36:13,911 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2018-09-19 16:36:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-19 16:36:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2018-09-19 16:36:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-19 16:36:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2018-09-19 16:36:13,917 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 73 [2018-09-19 16:36:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:13,917 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2018-09-19 16:36:13,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-19 16:36:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2018-09-19 16:36:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-19 16:36:13,918 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:13,918 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:13,919 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:13,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1543187328, now seen corresponding path program 1 times [2018-09-19 16:36:13,919 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:13,920 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:13,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:14,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-19 16:36:14,279 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:14,294 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:14,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:36:14,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:36:14,294 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:36:14,295 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:36:14,295 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 9 states. [2018-09-19 16:36:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:14,860 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2018-09-19 16:36:14,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:36:14,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2018-09-19 16:36:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:14,862 INFO L225 Difference]: With dead ends: 84 [2018-09-19 16:36:14,862 INFO L226 Difference]: Without dead ends: 65 [2018-09-19 16:36:14,863 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:36:14,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-19 16:36:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2018-09-19 16:36:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-19 16:36:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2018-09-19 16:36:14,870 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 86 [2018-09-19 16:36:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:14,870 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2018-09-19 16:36:14,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:36:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2018-09-19 16:36:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-19 16:36:14,871 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:14,871 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:14,871 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:14,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1402638718, now seen corresponding path program 1 times [2018-09-19 16:36:14,872 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:14,872 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:14,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:14,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:15,124 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:36:15,129 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:36:15,129 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:15,132 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:15,141 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:15,141 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:15,185 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:36:15,205 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:36:15,206 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:15,230 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:15,253 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:15,253 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-19 16:36:15,808 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:15,817 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:15,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:36:15,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:36:15,818 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:36:15,818 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:36:15,818 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 14 states. [2018-09-19 16:36:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:17,240 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2018-09-19 16:36:17,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:36:17,241 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2018-09-19 16:36:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:17,242 INFO L225 Difference]: With dead ends: 87 [2018-09-19 16:36:17,242 INFO L226 Difference]: Without dead ends: 66 [2018-09-19 16:36:17,243 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2018-09-19 16:36:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-19 16:36:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-09-19 16:36:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-09-19 16:36:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2018-09-19 16:36:17,250 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 86 [2018-09-19 16:36:17,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:17,250 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2018-09-19 16:36:17,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:36:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2018-09-19 16:36:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-19 16:36:17,251 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:17,252 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:17,252 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:17,252 INFO L82 PathProgramCache]: Analyzing trace with hash 315751793, now seen corresponding path program 1 times [2018-09-19 16:36:17,252 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:17,253 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:17,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:17,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:17,562 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:36:17,567 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:36:17,567 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:17,572 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:17,583 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:17,584 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:17,632 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:36:17,638 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:36:17,638 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:17,641 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:17,644 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:17,644 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-19 16:36:17,892 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:17,902 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:17,902 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:36:17,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:36:17,903 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:36:17,903 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:36:17,903 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 14 states. [2018-09-19 16:36:19,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:19,556 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2018-09-19 16:36:19,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:36:19,557 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2018-09-19 16:36:19,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:19,558 INFO L225 Difference]: With dead ends: 89 [2018-09-19 16:36:19,558 INFO L226 Difference]: Without dead ends: 68 [2018-09-19 16:36:19,559 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2018-09-19 16:36:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-19 16:36:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2018-09-19 16:36:19,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-09-19 16:36:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2018-09-19 16:36:19,565 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 87 [2018-09-19 16:36:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:19,565 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2018-09-19 16:36:19,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:36:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2018-09-19 16:36:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-19 16:36:19,566 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:19,566 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:19,566 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:19,567 INFO L82 PathProgramCache]: Analyzing trace with hash -255070855, now seen corresponding path program 1 times [2018-09-19 16:36:19,567 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:19,567 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 30 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:19,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:19,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:19,662 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:36:19,667 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:36:19,667 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:19,671 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:19,681 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:19,681 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:19,697 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:36:19,701 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:36:19,702 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:19,704 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:19,706 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:19,707 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-19 16:36:19,933 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:36:21,416 WARN L178 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-19 16:36:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-19 16:36:22,002 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:36:22,002 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-09-19 16:36:22,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-19 16:36:22,003 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-19 16:36:22,003 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:36:22,003 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 21 states. [2018-09-19 16:36:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:23,431 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2018-09-19 16:36:23,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:36:23,432 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 87 [2018-09-19 16:36:23,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:23,433 INFO L225 Difference]: With dead ends: 91 [2018-09-19 16:36:23,433 INFO L226 Difference]: Without dead ends: 76 [2018-09-19 16:36:23,434 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 153 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2018-09-19 16:36:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-19 16:36:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2018-09-19 16:36:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-09-19 16:36:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2018-09-19 16:36:23,439 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 87 [2018-09-19 16:36:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:23,439 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2018-09-19 16:36:23,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-19 16:36:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2018-09-19 16:36:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-19 16:36:23,440 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:23,440 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:23,440 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 523689574, now seen corresponding path program 1 times [2018-09-19 16:36:23,441 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:23,441 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 31 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:23,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:23,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:23,699 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:36:23,703 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:36:23,703 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:23,707 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:23,717 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:23,718 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:23,752 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:36:23,755 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:36:23,755 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:23,758 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:23,762 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:23,762 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-19 16:36:24,089 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:24,098 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:24,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:36:24,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:36:24,099 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:36:24,099 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:36:24,100 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 14 states. [2018-09-19 16:36:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:25,924 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2018-09-19 16:36:25,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:36:25,925 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2018-09-19 16:36:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:25,927 INFO L225 Difference]: With dead ends: 93 [2018-09-19 16:36:25,927 INFO L226 Difference]: Without dead ends: 72 [2018-09-19 16:36:25,927 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2018-09-19 16:36:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-09-19 16:36:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2018-09-19 16:36:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-09-19 16:36:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2018-09-19 16:36:25,933 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 88 [2018-09-19 16:36:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:25,934 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2018-09-19 16:36:25,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:36:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2018-09-19 16:36:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-19 16:36:25,935 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:25,935 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:25,935 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:25,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1830337556, now seen corresponding path program 1 times [2018-09-19 16:36:25,936 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:25,936 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 32 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:25,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:36:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:26,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-19 16:36:26,350 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:36:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-19 16:36:26,830 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:36:26,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-09-19 16:36:26,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-19 16:36:26,831 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-19 16:36:26,831 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:36:26,831 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 17 states. [2018-09-19 16:36:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:27,414 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2018-09-19 16:36:27,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:36:27,414 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2018-09-19 16:36:27,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:27,416 INFO L225 Difference]: With dead ends: 86 [2018-09-19 16:36:27,416 INFO L226 Difference]: Without dead ends: 71 [2018-09-19 16:36:27,417 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:36:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-19 16:36:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2018-09-19 16:36:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-19 16:36:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2018-09-19 16:36:27,423 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 88 [2018-09-19 16:36:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:27,423 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2018-09-19 16:36:27,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-19 16:36:27,423 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2018-09-19 16:36:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-19 16:36:27,424 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:27,424 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:27,424 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1152232981, now seen corresponding path program 1 times [2018-09-19 16:36:27,425 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:27,425 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 33 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:36:27,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 33 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:27,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:27,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-19 16:36:27,720 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:36:27,720 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:27,723 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:27,735 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:27,736 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:36:27,773 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-19 16:36:27,784 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-19 16:36:27,784 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:36:27,809 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:27,814 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:36:27,814 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:36:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-19 16:36:27,955 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:27,965 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:27,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:36:27,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:36:27,965 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:36:27,965 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:36:27,966 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 14 states. [2018-09-19 16:36:28,657 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-19 16:36:29,396 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-19 16:36:30,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:30,624 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2018-09-19 16:36:30,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:36:30,625 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2018-09-19 16:36:30,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:30,626 INFO L225 Difference]: With dead ends: 86 [2018-09-19 16:36:30,626 INFO L226 Difference]: Without dead ends: 65 [2018-09-19 16:36:30,627 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2018-09-19 16:36:30,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-19 16:36:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2018-09-19 16:36:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-19 16:36:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-09-19 16:36:30,632 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 89 [2018-09-19 16:36:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:30,633 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-09-19 16:36:30,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:36:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-09-19 16:36:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-19 16:36:30,634 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:36:30,634 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:36:30,634 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:36:30,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1845334678, now seen corresponding path program 1 times [2018-09-19 16:36:30,635 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:36:30,635 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 34 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:36:30,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 34 with mathsat -unsat_core_generation=3 [2018-09-19 16:36:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:36:30,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:36:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-19 16:36:30,739 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:36:30,750 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:36:30,750 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:36:30,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:36:30,751 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:36:30,751 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:30,751 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 4 states. [2018-09-19 16:36:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:36:30,760 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2018-09-19 16:36:30,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:36:30,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2018-09-19 16:36:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:36:30,761 INFO L225 Difference]: With dead ends: 66 [2018-09-19 16:36:30,761 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:36:30,762 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:36:30,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:36:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:36:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:36:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:36:30,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 89 [2018-09-19 16:36:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:36:30,763 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:36:30,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:36:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:36:30,764 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:36:30,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:36:31,003 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-19 16:36:31,467 INFO L426 ceAbstractionStarter]: For program point isnan_floatFINAL(line 55) no Hoare annotation was computed. [2018-09-19 16:36:31,467 INFO L429 ceAbstractionStarter]: At program point isnan_floatENTRY(line 55) the Hoare annotation is: true [2018-09-19 16:36:31,467 INFO L426 ceAbstractionStarter]: For program point isnan_floatEXIT(line 55) no Hoare annotation was computed. [2018-09-19 16:36:31,467 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:36:31,468 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:36:31,468 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:36:31,468 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:36:31,468 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 16:36:31,468 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:36:31,468 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:36:31,468 INFO L422 ceAbstractionStarter]: At program point L68-3(line 68) the Hoare annotation is: (and (not |main_#t~short9|) (not |main_#t~short13|) (fp.eq main_~x~0 main_~x~0) (= (_ bv0 32) |main_#t~ret7|) (= |main_#t~ret10| (_ bv0 32)) |main_#t~short12|) [2018-09-19 16:36:31,468 INFO L426 ceAbstractionStarter]: For program point L68-4(line 68) no Hoare annotation was computed. [2018-09-19 16:36:31,468 INFO L426 ceAbstractionStarter]: For program point L68-6(line 68) no Hoare annotation was computed. [2018-09-19 16:36:31,468 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 57 86) no Hoare annotation was computed. [2018-09-19 16:36:31,468 INFO L422 ceAbstractionStarter]: At program point L73(line 73) the Hoare annotation is: (let ((.cse1 (fp.eq main_~y~0 main_~y~0)) (.cse0 (fp.eq main_~x~0 main_~x~0))) (or (and (= main_~x~0 main_~res~0) .cse0 (not .cse1)) (and (= main_~y~0 main_~res~0) .cse1 (not .cse0)))) [2018-09-19 16:36:31,468 INFO L426 ceAbstractionStarter]: For program point L73-1(line 73) no Hoare annotation was computed. [2018-09-19 16:36:31,468 INFO L426 ceAbstractionStarter]: For program point L73-2(line 73) no Hoare annotation was computed. [2018-09-19 16:36:31,469 INFO L422 ceAbstractionStarter]: At program point L73-3(line 73) the Hoare annotation is: (and (= main_~y~0 main_~res~0) |main_#t~short17| (fp.eq main_~y~0 main_~y~0) (not (fp.eq main_~x~0 main_~x~0))) [2018-09-19 16:36:31,469 INFO L426 ceAbstractionStarter]: For program point L73-4(line 73) no Hoare annotation was computed. [2018-09-19 16:36:31,469 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2018-09-19 16:36:31,469 INFO L426 ceAbstractionStarter]: For program point L73-6(lines 73 76) no Hoare annotation was computed. [2018-09-19 16:36:31,469 INFO L426 ceAbstractionStarter]: For program point L74(line 74) no Hoare annotation was computed. [2018-09-19 16:36:31,469 INFO L422 ceAbstractionStarter]: At program point L70(line 70) the Hoare annotation is: (let ((.cse1 (fp.eq main_~y~0 main_~y~0)) (.cse0 (fp.eq main_~x~0 main_~x~0))) (or (and .cse0 (not .cse1)) (and .cse1 (not .cse0)))) [2018-09-19 16:36:31,469 INFO L426 ceAbstractionStarter]: For program point L70-1(line 70) no Hoare annotation was computed. [2018-09-19 16:36:31,469 INFO L426 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-09-19 16:36:31,470 INFO L422 ceAbstractionStarter]: At program point L79(line 79) the Hoare annotation is: (or (and (= main_~x~0 main_~res~0) (not (fp.eq main_~y~0 main_~y~0))) (not (fp.eq main_~x~0 main_~x~0))) [2018-09-19 16:36:31,470 INFO L426 ceAbstractionStarter]: For program point L79-1(line 79) no Hoare annotation was computed. [2018-09-19 16:36:31,470 INFO L426 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-09-19 16:36:31,470 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 57 86) no Hoare annotation was computed. [2018-09-19 16:36:31,470 INFO L422 ceAbstractionStarter]: At program point L79-3(line 79) the Hoare annotation is: (and (= main_~x~0 main_~res~0) (fp.eq main_~x~0 main_~x~0) |main_#t~short20| (not (fp.eq main_~y~0 main_~y~0))) [2018-09-19 16:36:31,470 INFO L426 ceAbstractionStarter]: For program point L79-4(line 79) no Hoare annotation was computed. [2018-09-19 16:36:31,470 INFO L426 ceAbstractionStarter]: For program point L79-6(lines 79 82) no Hoare annotation was computed. [2018-09-19 16:36:31,470 INFO L429 ceAbstractionStarter]: At program point L67(line 67) the Hoare annotation is: true [2018-09-19 16:36:31,471 INFO L426 ceAbstractionStarter]: For program point L67-1(line 67) no Hoare annotation was computed. [2018-09-19 16:36:31,471 INFO L426 ceAbstractionStarter]: For program point L67-2(line 67) no Hoare annotation was computed. [2018-09-19 16:36:31,471 INFO L422 ceAbstractionStarter]: At program point L67-3(line 67) the Hoare annotation is: (and (= (_ bv1 32) |main_#t~ret7|) |main_#t~short9| (not (fp.eq main_~x~0 main_~x~0))) [2018-09-19 16:36:31,471 INFO L426 ceAbstractionStarter]: For program point L67-4(line 67) no Hoare annotation was computed. [2018-09-19 16:36:31,471 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 57 86) the Hoare annotation is: true [2018-09-19 16:36:31,471 INFO L426 ceAbstractionStarter]: For program point L67-6(line 67) no Hoare annotation was computed. [2018-09-19 16:36:31,471 INFO L426 ceAbstractionStarter]: For program point L67-7(lines 67 68) no Hoare annotation was computed. [2018-09-19 16:36:31,471 INFO L426 ceAbstractionStarter]: For program point L67-9(lines 67 83) no Hoare annotation was computed. [2018-09-19 16:36:31,472 INFO L426 ceAbstractionStarter]: For program point L67-11(lines 67 83) no Hoare annotation was computed. [2018-09-19 16:36:31,472 INFO L426 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-09-19 16:36:31,472 INFO L422 ceAbstractionStarter]: At program point L68(line 68) the Hoare annotation is: (let ((.cse2 (fp.eq main_~x~0 main_~x~0)) (.cse0 (not |main_#t~short9|)) (.cse1 (not |main_#t~short13|))) (or (and .cse0 .cse1 .cse2 (= (_ bv0 32) |main_#t~ret7|)) (and (and (= (_ bv1 32) |main_#t~ret7|) (not .cse2)) (= (bvadd |main_#t~ret8| (_ bv4294967295 32)) (_ bv0 32)) .cse0 .cse1 (not (fp.eq main_~y~0 main_~y~0))))) [2018-09-19 16:36:31,472 INFO L426 ceAbstractionStarter]: For program point L68-1(line 68) no Hoare annotation was computed. [2018-09-19 16:36:31,472 INFO L426 ceAbstractionStarter]: For program point L68-2(line 68) no Hoare annotation was computed. [2018-09-19 16:36:31,472 INFO L426 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 43 52) no Hoare annotation was computed. [2018-09-19 16:36:31,472 INFO L429 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 43 52) the Hoare annotation is: true [2018-09-19 16:36:31,472 INFO L426 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-09-19 16:36:31,473 INFO L426 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-09-19 16:36:31,473 INFO L422 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-09-19 16:36:31,473 INFO L426 ceAbstractionStarter]: For program point L48-1(lines 48 50) no Hoare annotation was computed. [2018-09-19 16:36:31,473 INFO L422 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-09-19 16:36:31,473 INFO L426 ceAbstractionStarter]: For program point L44-1(lines 44 46) no Hoare annotation was computed. [2018-09-19 16:36:31,473 INFO L426 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 43 52) no Hoare annotation was computed. [2018-09-19 16:36:31,473 INFO L426 ceAbstractionStarter]: For program point L31(lines 31 40) no Hoare annotation was computed. [2018-09-19 16:36:31,473 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 20 41) no Hoare annotation was computed. [2018-09-19 16:36:31,474 INFO L426 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-09-19 16:36:31,474 INFO L426 ceAbstractionStarter]: For program point L23-1(lines 23 27) no Hoare annotation was computed. [2018-09-19 16:36:31,474 INFO L422 ceAbstractionStarter]: At program point L23-3(lines 23 27) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-09-19 16:36:31,474 INFO L426 ceAbstractionStarter]: For program point L23-4(lines 20 41) no Hoare annotation was computed. [2018-09-19 16:36:31,474 INFO L426 ceAbstractionStarter]: For program point L34(lines 34 40) no Hoare annotation was computed. [2018-09-19 16:36:31,474 INFO L426 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-09-19 16:36:31,474 INFO L426 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-09-19 16:36:31,474 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-19 16:36:31,474 INFO L426 ceAbstractionStarter]: For program point L26-2(line 26) no Hoare annotation was computed. [2018-09-19 16:36:31,475 INFO L426 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-09-19 16:36:31,475 INFO L426 ceAbstractionStarter]: For program point L24-2(line 24) no Hoare annotation was computed. [2018-09-19 16:36:31,475 INFO L426 ceAbstractionStarter]: For program point L24-3(line 24) no Hoare annotation was computed. [2018-09-19 16:36:31,475 INFO L429 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 20 41) the Hoare annotation is: true [2018-09-19 16:36:31,475 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 20 41) no Hoare annotation was computed. [2018-09-19 16:36:31,475 INFO L426 ceAbstractionStarter]: For program point L37(lines 37 40) no Hoare annotation was computed. [2018-09-19 16:36:31,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:36:31 BoogieIcfgContainer [2018-09-19 16:36:31,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:36:31,491 INFO L168 Benchmark]: Toolchain (without parser) took 51941.51 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -411.8 MB). Peak memory consumption was 677.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:36:31,492 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:36:31,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:36:31,493 INFO L168 Benchmark]: Boogie Preprocessor took 87.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:36:31,493 INFO L168 Benchmark]: RCFGBuilder took 924.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:36:31,494 INFO L168 Benchmark]: TraceAbstraction took 50559.73 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 293.6 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 406.7 MB). Peak memory consumption was 700.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:36:31,497 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 924.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50559.73 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 293.6 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 406.7 MB). Peak memory consumption was 700.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 72 locations, 2 error locations. SAFE Result, 50.4s OverallTime, 31 OverallIterations, 6 TraceHistogramMax, 25.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 2305 SDtfs, 1081 SDslu, 12569 SDs, 0 SdLazy, 5392 SolverSat, 273 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3058 GetRequests, 2664 SyntacticMatches, 8 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 31 MinimizatonAttempts, 179 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 156 PreInvPairs, 180 NumberOfFragments, 160 HoareAnnotationTreeSize, 156 FomulaSimplifications, 677 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 19 FomulaSimplificationsInter, 107 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 2251 NumberOfCodeBlocks, 2251 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2824 ConstructedInterpolants, 35 QuantifiedInterpolants, 634253 SizeOfPredicates, 186 NumberOfNonLiveVariables, 4300 ConjunctsInSsa, 337 ConjunctsInUnsatCore, 42 InterpolantComputations, 20 PerfectInterpolantSequences, 1229/1365 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...