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/double_req_bl_1231b_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:19:06,022 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:19:06,024 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:19:06,037 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:19:06,037 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:19:06,038 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:19:06,040 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:19:06,042 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:19:06,044 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:19:06,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:19:06,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:19:06,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:19:06,047 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:19:06,048 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:19:06,049 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:19:06,050 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:19:06,051 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:19:06,053 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:19:06,057 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:19:06,062 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:19:06,066 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:19:06,068 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:19:06,072 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:19:06,073 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:19:06,073 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:19:06,074 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:19:06,075 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:19:06,076 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:19:06,077 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:19:06,078 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:19:06,078 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:19:06,079 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:19:06,079 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:19:06,079 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:19:06,080 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:19:06,081 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:19:06,082 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 16:19:06,104 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:19:06,104 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:19:06,107 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:19:06,107 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:19:06,111 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:19:06,111 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:19:06,111 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:19:06,111 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:19:06,112 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:19:06,112 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:19:06,112 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:19:06,112 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:19:06,112 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:19:06,113 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:19:06,113 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:19:06,113 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:19:06,114 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:19:06,115 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:19:06,115 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:19:06,115 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:19:06,115 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:19:06,116 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:19:06,116 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:19:06,116 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:19:06,116 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:19:06,117 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:19:06,117 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:19:06,117 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:19:06,118 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:19:06,118 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:19:06,118 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:19:06,118 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:19:06,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:19:06,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:19:06,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:19:06,212 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:19:06,212 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:19:06,213 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-09-19 16:19:06,629 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260bccabb/503dcb6888bb4156a85a4f53fc860a6c/FLAG9227d3c4b [2018-09-19 16:19:06,798 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:19:06,799 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-09-19 16:19:06,807 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260bccabb/503dcb6888bb4156a85a4f53fc860a6c/FLAG9227d3c4b [2018-09-19 16:19:06,825 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260bccabb/503dcb6888bb4156a85a4f53fc860a6c [2018-09-19 16:19:06,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:19:06,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:19:06,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:19:06,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:19:06,848 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:19:06,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:19:06" (1/1) ... [2018-09-19 16:19:06,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383e09a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:06, skipping insertion in model container [2018-09-19 16:19:06,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:19:06" (1/1) ... [2018-09-19 16:19:06,869 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:19:07,093 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:19:07,115 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:19:07,151 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:19:07,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07 WrapperNode [2018-09-19 16:19:07,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:19:07,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:19:07,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:19:07,189 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:19:07,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (1/1) ... [2018-09-19 16:19:07,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (1/1) ... [2018-09-19 16:19:07,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (1/1) ... [2018-09-19 16:19:07,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (1/1) ... [2018-09-19 16:19:07,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (1/1) ... [2018-09-19 16:19:07,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (1/1) ... [2018-09-19 16:19:07,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (1/1) ... [2018-09-19 16:19:07,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:19:07,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:19:07,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:19:07,239 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:19:07,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (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 16:19:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:19:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:19:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-19 16:19:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-19 16:19:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-19 16:19:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:19:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:19:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:19:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-19 16:19:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-19 16:19:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:19:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:19:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:19:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:19:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-19 16:19:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:19:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:19:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:19:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:19:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:19:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:19:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:19:07,738 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:07,776 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:07,802 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:07,943 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:19:07,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:19:07 BoogieIcfgContainer [2018-09-19 16:19:07,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:19:07,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:19:07,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:19:07,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:19:07,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:19:06" (1/3) ... [2018-09-19 16:19:07,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36390d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:19:07, skipping insertion in model container [2018-09-19 16:19:07,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:07" (2/3) ... [2018-09-19 16:19:07,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36390d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:19:07, skipping insertion in model container [2018-09-19 16:19:07,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:19:07" (3/3) ... [2018-09-19 16:19:07,952 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b_true-unreach-call.c [2018-09-19 16:19:07,963 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:19:07,972 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:19:08,028 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:19:08,028 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:19:08,029 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:19:08,029 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:19:08,029 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:19:08,029 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:19:08,030 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:19:08,030 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:19:08,030 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:19:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-09-19 16:19:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-19 16:19:08,059 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:08,060 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:08,062 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:08,068 INFO L82 PathProgramCache]: Analyzing trace with hash -883733309, now seen corresponding path program 1 times [2018-09-19 16:19:08,074 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:08,074 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 16:19:08,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:08,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:08,195 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:08,213 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:08,213 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:19:08,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:19:08,232 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:19:08,233 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:19:08,236 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2018-09-19 16:19:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:08,266 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2018-09-19 16:19:08,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:19:08,268 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-09-19 16:19:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:08,283 INFO L225 Difference]: With dead ends: 88 [2018-09-19 16:19:08,283 INFO L226 Difference]: Without dead ends: 46 [2018-09-19 16:19:08,287 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 16:19:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-19 16:19:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-09-19 16:19:08,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-19 16:19:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2018-09-19 16:19:08,336 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 25 [2018-09-19 16:19:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:08,336 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2018-09-19 16:19:08,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:19:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2018-09-19 16:19:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-19 16:19:08,339 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:08,340 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:08,340 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:08,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2016097883, now seen corresponding path program 1 times [2018-09-19 16:19:08,341 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:08,342 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) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:08,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:08,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:08,540 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:08,554 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:08,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:08,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:08,557 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:08,557 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:08,557 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 4 states. [2018-09-19 16:19:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:08,699 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-09-19 16:19:08,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:08,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-19 16:19:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:08,710 INFO L225 Difference]: With dead ends: 55 [2018-09-19 16:19:08,711 INFO L226 Difference]: Without dead ends: 49 [2018-09-19 16:19:08,712 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 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 16:19:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-19 16:19:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-19 16:19:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-19 16:19:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2018-09-19 16:19:08,730 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 38 [2018-09-19 16:19:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:08,731 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2018-09-19 16:19:08,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2018-09-19 16:19:08,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-19 16:19:08,734 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:08,734 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:08,735 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:08,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1374149908, now seen corresponding path program 1 times [2018-09-19 16:19:08,736 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:08,736 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) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:08,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:08,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:08,900 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:08,914 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:08,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:08,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:08,915 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:08,916 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:08,916 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 4 states. [2018-09-19 16:19:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:09,008 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-09-19 16:19:09,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:09,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-19 16:19:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:09,011 INFO L225 Difference]: With dead ends: 58 [2018-09-19 16:19:09,012 INFO L226 Difference]: Without dead ends: 52 [2018-09-19 16:19:09,012 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 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 16:19:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-19 16:19:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-09-19 16:19:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-19 16:19:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2018-09-19 16:19:09,023 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 39 [2018-09-19 16:19:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:09,023 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2018-09-19 16:19:09,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2018-09-19 16:19:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-19 16:19:09,025 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:09,025 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:09,026 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482423, now seen corresponding path program 1 times [2018-09-19 16:19:09,027 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:09,027 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) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:09,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:09,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:09,260 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:09,277 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:09,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:09,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:09,278 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:09,278 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:09,279 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 4 states. [2018-09-19 16:19:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:09,371 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-09-19 16:19:09,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:09,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-09-19 16:19:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:09,373 INFO L225 Difference]: With dead ends: 58 [2018-09-19 16:19:09,374 INFO L226 Difference]: Without dead ends: 52 [2018-09-19 16:19:09,374 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 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 16:19:09,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-19 16:19:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-09-19 16:19:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-19 16:19:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2018-09-19 16:19:09,382 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 40 [2018-09-19 16:19:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:09,383 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2018-09-19 16:19:09,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2018-09-19 16:19:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-19 16:19:09,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:09,384 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:09,385 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:09,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1717260944, now seen corresponding path program 1 times [2018-09-19 16:19:09,386 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:09,386 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 16:19:09,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:09,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:09,543 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:09,559 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:09,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:09,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:09,560 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:09,560 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:09,561 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 4 states. [2018-09-19 16:19:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:09,614 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-09-19 16:19:09,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:09,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-09-19 16:19:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:09,618 INFO L225 Difference]: With dead ends: 58 [2018-09-19 16:19:09,618 INFO L226 Difference]: Without dead ends: 52 [2018-09-19 16:19:09,619 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 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 16:19:09,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-19 16:19:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-09-19 16:19:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-19 16:19:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2018-09-19 16:19:09,626 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 41 [2018-09-19 16:19:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:09,627 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2018-09-19 16:19:09,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2018-09-19 16:19:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-19 16:19:09,628 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:09,628 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:09,629 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:09,629 INFO L82 PathProgramCache]: Analyzing trace with hash -90193519, now seen corresponding path program 1 times [2018-09-19 16:19:09,629 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:09,630 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 16:19:09,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:09,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:09,965 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:09,966 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:09,974 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 27 treesize of output 35 [2018-09-19 16:19:09,989 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:19:10,008 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:19:10,009 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:10,024 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:10,051 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:10,051 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:19:10,751 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:10,762 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:10,764 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 54 treesize of output 56 [2018-09-19 16:19:10,809 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:19:10,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-19 16:19:10,831 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:10,938 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:11,036 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:11,036 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:19:11,138 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 35 treesize of output 27 [2018-09-19 16:19:11,145 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:19:11,154 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-19 16:19:11,155 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:11,166 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:11,179 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:11,180 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:19:11,753 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-09-19 16:19:12,038 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 39 [2018-09-19 16:19:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:12,484 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:12,498 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:12,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-19 16:19:12,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-19 16:19:12,499 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-19 16:19:12,500 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:19:12,500 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 16 states. [2018-09-19 16:19:13,154 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:19:14,063 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:19:14,608 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:19:16,958 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-09-19 16:19:21,352 WARN L178 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2018-09-19 16:19:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:22,148 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2018-09-19 16:19:22,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-19 16:19:22,154 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-09-19 16:19:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:22,156 INFO L225 Difference]: With dead ends: 63 [2018-09-19 16:19:22,156 INFO L226 Difference]: Without dead ends: 52 [2018-09-19 16:19:22,159 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2018-09-19 16:19:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-19 16:19:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-09-19 16:19:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-09-19 16:19:22,166 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 41 [2018-09-19 16:19:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:22,167 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-09-19 16:19:22,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-19 16:19:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-09-19 16:19:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-19 16:19:22,168 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:22,169 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2018-09-19 16:19:22,169 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:22,170 INFO L82 PathProgramCache]: Analyzing trace with hash -429778258, now seen corresponding path program 1 times [2018-09-19 16:19:22,171 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:22,171 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 16:19:22,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:22,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:22,299 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:22,310 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:22,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:22,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:22,312 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:22,312 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:22,312 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 4 states. [2018-09-19 16:19:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:22,339 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-09-19 16:19:22,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:22,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-09-19 16:19:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:22,341 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:19:22,341 INFO L226 Difference]: Without dead ends: 51 [2018-09-19 16:19:22,342 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 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 16:19:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-19 16:19:22,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-19 16:19:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-19 16:19:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2018-09-19 16:19:22,349 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 58 [2018-09-19 16:19:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:22,349 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2018-09-19 16:19:22,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2018-09-19 16:19:22,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-19 16:19:22,351 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:22,351 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-19 16:19:22,351 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:22,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1152900451, now seen corresponding path program 1 times [2018-09-19 16:19:22,352 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:22,352 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 16:19:22,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:22,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:22,518 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:22,529 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:22,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:22,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:22,530 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:22,530 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:22,530 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 4 states. [2018-09-19 16:19:22,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:22,549 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-09-19 16:19:22,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:22,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-19 16:19:22,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:22,551 INFO L225 Difference]: With dead ends: 60 [2018-09-19 16:19:22,552 INFO L226 Difference]: Without dead ends: 54 [2018-09-19 16:19:22,552 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 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 16:19:22,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-19 16:19:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-09-19 16:19:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-19 16:19:22,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2018-09-19 16:19:22,559 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 59 [2018-09-19 16:19:22,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:22,560 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2018-09-19 16:19:22,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:22,560 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2018-09-19 16:19:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-19 16:19:22,562 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:22,563 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2018-09-19 16:19:22,563 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash 831452585, now seen corresponding path program 1 times [2018-09-19 16:19:22,563 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:22,564 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 16:19:22,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:22,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:22,891 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 16:19:22,891 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:22,902 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:22,902 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 16:19:22,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 16:19:22,903 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 16:19:22,903 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 16:19:22,903 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 5 states. [2018-09-19 16:19:23,138 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-09-19 16:19:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:23,263 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2018-09-19 16:19:23,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 16:19:23,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2018-09-19 16:19:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:23,266 INFO L225 Difference]: With dead ends: 58 [2018-09-19 16:19:23,266 INFO L226 Difference]: Without dead ends: 51 [2018-09-19 16:19:23,267 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:19:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-19 16:19:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-19 16:19:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-19 16:19:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2018-09-19 16:19:23,272 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 60 [2018-09-19 16:19:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:23,273 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2018-09-19 16:19:23,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 16:19:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2018-09-19 16:19:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-19 16:19:23,274 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:23,274 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2018-09-19 16:19:23,275 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1688507349, now seen corresponding path program 1 times [2018-09-19 16:19:23,275 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:23,275 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 16:19:23,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:23,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:23,574 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 14 treesize of output 11 [2018-09-19 16:19:23,581 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 11 treesize of output 10 [2018-09-19 16:19:23,582 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:23,590 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:23,605 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:23,606 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:23,724 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 20 treesize of output 16 [2018-09-19 16:19:23,740 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 16 treesize of output 4 [2018-09-19 16:19:23,740 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:23,762 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:23,804 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:23,805 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-19 16:19:24,178 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:24,189 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:24,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:19:24,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:19:24,190 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:19:24,190 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:19:24,190 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 10 states. [2018-09-19 16:19:24,662 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:19:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:25,788 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2018-09-19 16:19:25,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:19:25,790 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2018-09-19 16:19:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:25,791 INFO L225 Difference]: With dead ends: 62 [2018-09-19 16:19:25,791 INFO L226 Difference]: Without dead ends: 53 [2018-09-19 16:19:25,792 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:19:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-19 16:19:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-19 16:19:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-19 16:19:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-09-19 16:19:25,800 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 60 [2018-09-19 16:19:25,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:25,801 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-09-19 16:19:25,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:19:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-09-19 16:19:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-19 16:19:25,802 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:25,802 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-19 16:19:25,802 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:25,803 INFO L82 PathProgramCache]: Analyzing trace with hash -734735214, now seen corresponding path program 1 times [2018-09-19 16:19:25,803 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:25,803 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) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:25,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:25,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:25,917 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:25,928 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:25,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:25,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:25,928 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:25,929 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:25,929 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 4 states. [2018-09-19 16:19:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:25,949 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2018-09-19 16:19:25,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:25,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-19 16:19:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:25,951 INFO L225 Difference]: With dead ends: 62 [2018-09-19 16:19:25,951 INFO L226 Difference]: Without dead ends: 56 [2018-09-19 16:19:25,952 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 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 16:19:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-19 16:19:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2018-09-19 16:19:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-19 16:19:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-09-19 16:19:25,960 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 60 [2018-09-19 16:19:25,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:25,960 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-09-19 16:19:25,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:25,960 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-09-19 16:19:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-19 16:19:25,961 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:25,961 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-19 16:19:25,962 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:25,962 INFO L82 PathProgramCache]: Analyzing trace with hash -824232870, now seen corresponding path program 1 times [2018-09-19 16:19:25,962 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:25,963 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 16:19:25,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:26,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:26,157 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 14 treesize of output 11 [2018-09-19 16:19:26,162 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 11 treesize of output 10 [2018-09-19 16:19:26,163 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:26,169 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:26,184 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:26,184 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:26,236 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 20 treesize of output 16 [2018-09-19 16:19:26,240 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 16 treesize of output 4 [2018-09-19 16:19:26,240 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:26,244 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:26,254 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:26,255 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-19 16:19:26,609 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:26,619 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:26,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:19:26,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:19:26,620 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:19:26,620 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:19:26,620 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 10 states. [2018-09-19 16:19:27,140 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:19:28,677 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:19:28,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:28,915 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-09-19 16:19:28,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:19:28,917 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2018-09-19 16:19:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:28,919 INFO L225 Difference]: With dead ends: 64 [2018-09-19 16:19:28,919 INFO L226 Difference]: Without dead ends: 55 [2018-09-19 16:19:28,920 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:19:28,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-19 16:19:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2018-09-19 16:19:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-19 16:19:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-09-19 16:19:28,932 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 61 [2018-09-19 16:19:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:28,932 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-09-19 16:19:28,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:19:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-09-19 16:19:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-19 16:19:28,933 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:28,934 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-19 16:19:28,934 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:28,935 INFO L82 PathProgramCache]: Analyzing trace with hash 703601985, now seen corresponding path program 1 times [2018-09-19 16:19:28,935 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:28,935 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) [2018-09-19 16:19:28,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:29,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:29,074 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:29,084 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:29,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:29,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:29,085 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:29,085 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:29,086 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 4 states. [2018-09-19 16:19:29,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:29,110 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2018-09-19 16:19:29,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:29,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-09-19 16:19:29,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:29,111 INFO L225 Difference]: With dead ends: 60 [2018-09-19 16:19:29,112 INFO L226 Difference]: Without dead ends: 54 [2018-09-19 16:19:29,112 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 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 16:19:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-19 16:19:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-09-19 16:19:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-19 16:19:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-09-19 16:19:29,117 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 61 [2018-09-19 16:19:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:29,117 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-09-19 16:19:29,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-09-19 16:19:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-19 16:19:29,118 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:29,119 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-19 16:19:29,119 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:29,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1103852478, now seen corresponding path program 1 times [2018-09-19 16:19:29,120 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:29,120 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 16:19:29,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:29,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:29,285 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 14 treesize of output 11 [2018-09-19 16:19:29,292 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 11 treesize of output 10 [2018-09-19 16:19:29,293 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:29,300 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:29,315 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:29,315 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:29,354 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 20 treesize of output 16 [2018-09-19 16:19:29,361 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 16 treesize of output 4 [2018-09-19 16:19:29,361 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:29,364 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:29,375 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:29,375 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:29,926 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:19:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-19 16:19:30,219 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:19:30,567 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:19:31,361 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-19 16:19:31,706 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:19:32,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-19 16:19:32,255 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 16:19:32,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:32,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-19 16:19:33,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 16:19:33,303 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:19:34,525 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:19:34,653 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:19:35,593 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:19:37,144 WARN L178 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:19:37,242 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 16:19:37,266 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-19 16:19:37,266 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 10] total 24 [2018-09-19 16:19:37,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-19 16:19:37,267 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-19 16:19:37,267 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2018-09-19 16:19:37,268 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 24 states. [2018-09-19 16:19:39,080 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:19:40,891 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2018-09-19 16:19:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:41,158 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2018-09-19 16:19:41,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 16:19:41,159 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 61 [2018-09-19 16:19:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:41,160 INFO L225 Difference]: With dead ends: 71 [2018-09-19 16:19:41,160 INFO L226 Difference]: Without dead ends: 61 [2018-09-19 16:19:41,161 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 185 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2018-09-19 16:19:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-19 16:19:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2018-09-19 16:19:41,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-19 16:19:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-09-19 16:19:41,167 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 61 [2018-09-19 16:19:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:41,167 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-09-19 16:19:41,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-19 16:19:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-09-19 16:19:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-19 16:19:41,168 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:41,169 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-19 16:19:41,169 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:41,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1600601359, now seen corresponding path program 1 times [2018-09-19 16:19:41,169 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:41,169 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) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:41,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:41,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:41,321 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 14 treesize of output 11 [2018-09-19 16:19:41,326 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 11 treesize of output 10 [2018-09-19 16:19:41,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:41,346 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:41,359 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:41,360 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:41,416 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 20 treesize of output 16 [2018-09-19 16:19:41,431 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 16 treesize of output 4 [2018-09-19 16:19:41,432 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:41,460 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:41,493 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:41,494 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-19 16:19:41,879 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:41,896 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:41,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:19:41,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:19:41,896 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:19:41,897 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:19:41,897 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 10 states. [2018-09-19 16:19:42,799 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:19:43,481 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:19:43,650 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:19:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:44,250 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-09-19 16:19:44,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:19:44,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-09-19 16:19:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:44,253 INFO L225 Difference]: With dead ends: 63 [2018-09-19 16:19:44,253 INFO L226 Difference]: Without dead ends: 54 [2018-09-19 16:19:44,253 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:19:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-19 16:19:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-09-19 16:19:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-19 16:19:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-09-19 16:19:44,260 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 62 [2018-09-19 16:19:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:44,261 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-09-19 16:19:44,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:19:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-09-19 16:19:44,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-19 16:19:44,262 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:44,262 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-19 16:19:44,262 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:44,262 INFO L82 PathProgramCache]: Analyzing trace with hash 863180286, now seen corresponding path program 1 times [2018-09-19 16:19:44,263 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:44,263 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 16:19:44,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:44,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:44,459 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:44,460 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:44,461 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 27 treesize of output 35 [2018-09-19 16:19:44,468 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:19:44,547 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:19:44,548 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:44,573 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:44,593 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:44,593 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:19:44,791 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:44,796 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:44,798 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 54 treesize of output 56 [2018-09-19 16:19:44,815 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:19:44,835 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-19 16:19:44,836 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:44,862 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:44,901 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:44,901 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:19:44,981 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 35 treesize of output 27 [2018-09-19 16:19:44,986 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:19:44,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-19 16:19:44,990 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:45,000 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:45,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:45,016 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:19:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-19 16:19:45,408 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:45,419 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:45,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 16:19:45,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 16:19:45,420 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 16:19:45,420 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:19:45,420 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 12 states. [2018-09-19 16:19:47,879 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-19 16:19:48,567 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:19:49,533 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:19:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:50,014 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-09-19 16:19:50,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:19:50,015 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2018-09-19 16:19:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:50,016 INFO L225 Difference]: With dead ends: 59 [2018-09-19 16:19:50,016 INFO L226 Difference]: Without dead ends: 50 [2018-09-19 16:19:50,017 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-09-19 16:19:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-19 16:19:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-09-19 16:19:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-19 16:19:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-09-19 16:19:50,021 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 63 [2018-09-19 16:19:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:50,022 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-09-19 16:19:50,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 16:19:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-09-19 16:19:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-19 16:19:50,022 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:50,023 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-19 16:19:50,023 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:50,023 INFO L82 PathProgramCache]: Analyzing trace with hash -933771073, now seen corresponding path program 1 times [2018-09-19 16:19:50,023 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:50,024 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 16:19:50,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:50,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-19 16:19:50,161 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:50,174 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:50,174 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:50,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:50,175 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:50,175 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:50,175 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-09-19 16:19:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:50,200 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2018-09-19 16:19:50,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:50,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-09-19 16:19:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:50,201 INFO L225 Difference]: With dead ends: 48 [2018-09-19 16:19:50,201 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:19:50,202 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 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 16:19:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:19:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:19:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:19:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:19:50,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2018-09-19 16:19:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:50,203 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:19:50,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:19:50,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:19:50,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:19:50,504 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:19:50,658 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-09-19 16:19:50,680 INFO L429 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-09-19 16:19:50,680 INFO L426 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-09-19 16:19:50,681 INFO L426 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-09-19 16:19:50,681 INFO L426 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2018-09-19 16:19:50,681 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 17 42) no Hoare annotation was computed. [2018-09-19 16:19:50,681 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-19 16:19:50,681 INFO L426 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-09-19 16:19:50,681 INFO L426 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-09-19 16:19:50,681 INFO L426 ceAbstractionStarter]: For program point L23-2(line 23) no Hoare annotation was computed. [2018-09-19 16:19:50,682 INFO L426 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-09-19 16:19:50,682 INFO L426 ceAbstractionStarter]: For program point L21-2(line 21) no Hoare annotation was computed. [2018-09-19 16:19:50,682 INFO L426 ceAbstractionStarter]: For program point L21-3(line 21) no Hoare annotation was computed. [2018-09-19 16:19:50,682 INFO L429 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 17 42) the Hoare annotation is: true [2018-09-19 16:19:50,682 INFO L426 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-09-19 16:19:50,682 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-19 16:19:50,682 INFO L426 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-09-19 16:19:50,683 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 17 42) no Hoare annotation was computed. [2018-09-19 16:19:50,683 INFO L426 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-09-19 16:19:50,683 INFO L426 ceAbstractionStarter]: For program point L24-2(line 24) no Hoare annotation was computed. [2018-09-19 16:19:50,683 INFO L426 ceAbstractionStarter]: For program point L24-3(line 24) no Hoare annotation was computed. [2018-09-19 16:19:50,683 INFO L426 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-09-19 16:19:50,683 INFO L422 ceAbstractionStarter]: At program point L20-3(lines 20 25) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-09-19 16:19:50,683 INFO L426 ceAbstractionStarter]: For program point L20-4(lines 17 42) no Hoare annotation was computed. [2018-09-19 16:19:50,684 INFO L426 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-09-19 16:19:50,684 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:19:50,684 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:19:50,684 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:19:50,684 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:19:50,684 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 16:19:50,684 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:19:50,684 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:19:50,685 INFO L422 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (and (= (fp.div RNE (_ +zero 11 53) (_ +zero 11 53)) main_~y~0) (fp.eq main_~x~0 main_~x~0)) [2018-09-19 16:19:50,685 INFO L426 ceAbstractionStarter]: For program point L64-1(line 64) no Hoare annotation was computed. [2018-09-19 16:19:50,685 INFO L422 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (= (fp.div RNE (_ +zero 11 53) (_ +zero 11 53)) main_~y~0) [2018-09-19 16:19:50,685 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 53 74) the Hoare annotation is: true [2018-09-19 16:19:50,685 INFO L426 ceAbstractionStarter]: For program point L62-1(lines 62 71) no Hoare annotation was computed. [2018-09-19 16:19:50,685 INFO L426 ceAbstractionStarter]: For program point L62-3(lines 62 71) no Hoare annotation was computed. [2018-09-19 16:19:50,685 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 53 74) no Hoare annotation was computed. [2018-09-19 16:19:50,686 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2018-09-19 16:19:50,686 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 53 74) no Hoare annotation was computed. [2018-09-19 16:19:50,686 INFO L426 ceAbstractionStarter]: For program point L68(line 68) no Hoare annotation was computed. [2018-09-19 16:19:50,686 INFO L426 ceAbstractionStarter]: For program point L67(lines 67 70) no Hoare annotation was computed. [2018-09-19 16:19:50,686 INFO L426 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 44 51) no Hoare annotation was computed. [2018-09-19 16:19:50,686 INFO L429 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 44 51) the Hoare annotation is: true [2018-09-19 16:19:50,686 INFO L426 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 44 51) no Hoare annotation was computed. [2018-09-19 16:19:50,686 INFO L426 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-09-19 16:19:50,686 INFO L426 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-09-19 16:19:50,687 INFO L422 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (or (exists ((v_prenex_12 (_ BitVec 64))) (and (not (bvule ((_ extract 63 32) v_prenex_12) (_ bv4293918719 32))) (not (= (_ bv0 32) ((_ extract 31 0) v_prenex_12))) (= (fp ((_ extract 63 63) v_prenex_12) ((_ extract 62 52) v_prenex_12) ((_ extract 51 0) v_prenex_12)) |fmin_double_#in~x|))) (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|))) [2018-09-19 16:19:50,687 INFO L426 ceAbstractionStarter]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2018-09-19 16:19:50,687 INFO L422 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-09-19 16:19:50,687 INFO L426 ceAbstractionStarter]: For program point L45-1(lines 45 46) no Hoare annotation was computed. [2018-09-19 16:19:50,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:19:50 BoogieIcfgContainer [2018-09-19 16:19:50,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:19:50,700 INFO L168 Benchmark]: Toolchain (without parser) took 43864.23 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.8 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -372.1 MB). Peak memory consumption was 497.7 MB. Max. memory is 7.1 GB. [2018-09-19 16:19:50,701 INFO L168 Benchmark]: CDTParser took 0.27 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 16:19:50,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.55 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 16:19:50,702 INFO L168 Benchmark]: Boogie Preprocessor took 49.49 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 16:19:50,702 INFO L168 Benchmark]: RCFGBuilder took 705.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -784.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:19:50,703 INFO L168 Benchmark]: TraceAbstraction took 42754.17 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 120.6 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 402.1 MB). Peak memory consumption was 522.7 MB. Max. memory is 7.1 GB. [2018-09-19 16:19:50,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 349.55 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 49.49 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 705.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -784.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42754.17 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 120.6 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 402.1 MB). Peak memory consumption was 522.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 68]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. SAFE Result, 42.6s OverallTime, 17 OverallIterations, 2 TraceHistogramMax, 25.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 781 SDtfs, 307 SDslu, 2573 SDs, 0 SdLazy, 1472 SolverSat, 37 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1086 GetRequests, 936 SyntacticMatches, 5 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=10, 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: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 41 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 18 PreInvPairs, 23 NumberOfFragments, 62 HoareAnnotationTreeSize, 18 FomulaSimplifications, 50 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 953 NumberOfCodeBlocks, 953 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 995 ConstructedInterpolants, 126 QuantifiedInterpolants, 250649 SizeOfPredicates, 65 NumberOfNonLiveVariables, 2009 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 214/234 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...