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_1232a_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:19:10,058 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:19:10,060 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:19:10,073 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:19:10,073 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:19:10,074 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:19:10,075 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:19:10,079 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:19:10,081 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:19:10,083 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:19:10,084 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:19:10,086 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:19:10,087 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:19:10,088 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:19:10,089 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:19:10,090 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:19:10,091 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:19:10,093 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:19:10,095 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:19:10,097 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:19:10,098 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:19:10,099 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:19:10,101 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:19:10,102 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:19:10,102 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:19:10,103 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:19:10,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:19:10,105 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:19:10,106 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:19:10,107 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:19:10,107 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:19:10,108 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:19:10,108 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:19:10,109 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:19:10,110 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:19:10,110 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:19:10,111 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 16:19:10,126 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:19:10,126 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:19:10,127 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:19:10,127 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:19:10,128 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:19:10,128 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:19:10,128 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:19:10,129 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:19:10,129 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:19:10,129 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:19:10,129 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:19:10,129 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:19:10,130 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:19:10,130 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:19:10,130 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:19:10,130 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:19:10,130 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:19:10,131 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:19:10,131 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:19:10,131 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:19:10,131 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:19:10,131 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:19:10,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:19:10,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:19:10,132 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:19:10,132 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:19:10,132 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:19:10,133 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:19:10,133 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:19:10,133 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:19:10,133 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:19:10,133 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:19:10,194 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:19:10,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:19:10,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:19:10,218 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:19:10,218 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:19:10,219 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-19 16:19:10,588 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c1b8f45d/520605f9c5194655ac59c814c405c628/FLAGeffb73c67 [2018-09-19 16:19:10,773 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:19:10,773 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-19 16:19:10,781 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c1b8f45d/520605f9c5194655ac59c814c405c628/FLAGeffb73c67 [2018-09-19 16:19:10,797 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c1b8f45d/520605f9c5194655ac59c814c405c628 [2018-09-19 16:19:10,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:19:10,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:19:10,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:19:10,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:19:10,817 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:19:10,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:19:10" (1/1) ... [2018-09-19 16:19:10,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d93ef6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:10, skipping insertion in model container [2018-09-19 16:19:10,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:19:10" (1/1) ... [2018-09-19 16:19:10,833 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:19:11,066 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:19:11,085 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:19:11,115 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:19:11,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11 WrapperNode [2018-09-19 16:19:11,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:19:11,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:19:11,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:19:11,183 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:19:11,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (1/1) ... [2018-09-19 16:19:11,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (1/1) ... [2018-09-19 16:19:11,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (1/1) ... [2018-09-19 16:19:11,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (1/1) ... [2018-09-19 16:19:11,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (1/1) ... [2018-09-19 16:19:11,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (1/1) ... [2018-09-19 16:19:11,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (1/1) ... [2018-09-19 16:19:11,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:19:11,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:19:11,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:19:11,236 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:19:11,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (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 16:19:11,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:19:11,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:19:11,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-19 16:19:11,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-19 16:19:11,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-19 16:19:11,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-19 16:19:11,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:19:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:19:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:19:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-19 16:19:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-19 16:19:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:19:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:19:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:19:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:19:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-19 16:19:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-19 16:19:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:19:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:19:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:19:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:19:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:19:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:19:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:19:11,586 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:11,608 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:11,912 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:11,923 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:11,944 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:19:12,000 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:19:12,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:19:12 BoogieIcfgContainer [2018-09-19 16:19:12,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:19:12,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:19:12,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:19:12,006 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:19:12,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:19:10" (1/3) ... [2018-09-19 16:19:12,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211abd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:19:12, skipping insertion in model container [2018-09-19 16:19:12,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:19:11" (2/3) ... [2018-09-19 16:19:12,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211abd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:19:12, skipping insertion in model container [2018-09-19 16:19:12,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:19:12" (3/3) ... [2018-09-19 16:19:12,010 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-09-19 16:19:12,020 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:19:12,031 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:19:12,086 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:19:12,086 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:19:12,086 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:19:12,087 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:19:12,087 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:19:12,087 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:19:12,087 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:19:12,087 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:19:12,087 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:19:12,107 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-09-19 16:19:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-19 16:19:12,116 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:12,117 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] [2018-09-19 16:19:12,120 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:12,125 INFO L82 PathProgramCache]: Analyzing trace with hash 534207900, now seen corresponding path program 1 times [2018-09-19 16:19:12,130 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:12,131 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) [2018-09-19 16:19:12,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:19:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:12,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:12,231 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 16:19:12,231 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:12,247 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:12,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:19:12,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:19:12,264 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:19:12,265 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:19:12,268 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-09-19 16:19:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:12,301 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2018-09-19 16:19:12,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:19:12,303 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-19 16:19:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:12,314 INFO L225 Difference]: With dead ends: 115 [2018-09-19 16:19:12,314 INFO L226 Difference]: Without dead ends: 58 [2018-09-19 16:19:12,320 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 16:19:12,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-19 16:19:12,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-19 16:19:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-19 16:19:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-09-19 16:19:12,378 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 21 [2018-09-19 16:19:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:12,378 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-09-19 16:19:12,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:19:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-09-19 16:19:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-19 16:19:12,381 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:12,381 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] [2018-09-19 16:19:12,382 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:12,382 INFO L82 PathProgramCache]: Analyzing trace with hash -18702094, now seen corresponding path program 1 times [2018-09-19 16:19:12,383 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:12,383 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 16:19:12,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:12,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:12,553 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 16:19:12,553 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:12,570 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:12,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:12,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:12,572 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:12,576 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:12,577 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 4 states. [2018-09-19 16:19:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:12,663 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2018-09-19 16:19:12,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:12,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-19 16:19:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:12,668 INFO L225 Difference]: With dead ends: 84 [2018-09-19 16:19:12,668 INFO L226 Difference]: Without dead ends: 61 [2018-09-19 16:19:12,669 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 16:19:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-19 16:19:12,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-19 16:19:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-19 16:19:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2018-09-19 16:19:12,685 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 34 [2018-09-19 16:19:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:12,686 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2018-09-19 16:19:12,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:12,686 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2018-09-19 16:19:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-19 16:19:12,687 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:12,688 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] [2018-09-19 16:19:12,688 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:12,688 INFO L82 PathProgramCache]: Analyzing trace with hash 270058899, now seen corresponding path program 1 times [2018-09-19 16:19:12,689 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:12,689 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 16:19:12,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:12,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:12,975 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 16:19:12,995 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 16:19:12,996 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:13,006 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:13,027 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 16:19:13,027 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:13,176 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 16:19:13,193 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 16:19:13,194 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:13,219 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:13,301 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 16:19:13,302 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:13,993 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 16:19:13,993 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:14,007 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:14,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:19:14,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:19:14,008 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:19:14,009 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:19:14,009 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 10 states. [2018-09-19 16:19:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:16,703 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2018-09-19 16:19:16,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:19:16,704 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-09-19 16:19:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:16,707 INFO L225 Difference]: With dead ends: 91 [2018-09-19 16:19:16,708 INFO L226 Difference]: Without dead ends: 63 [2018-09-19 16:19:16,709 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:19:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-19 16:19:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-19 16:19:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-19 16:19:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-19 16:19:16,719 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 35 [2018-09-19 16:19:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:16,719 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-19 16:19:16,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:19:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-19 16:19:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-19 16:19:16,721 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:16,721 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] [2018-09-19 16:19:16,722 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:16,722 INFO L82 PathProgramCache]: Analyzing trace with hash -154338930, now seen corresponding path program 1 times [2018-09-19 16:19:16,722 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:16,723 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 16:19:16,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:16,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:16,817 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 16:19:16,818 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:16,829 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:16,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:16,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:16,830 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:16,831 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:16,831 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 4 states. [2018-09-19 16:19:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:16,888 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2018-09-19 16:19:16,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:16,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-19 16:19:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:16,894 INFO L225 Difference]: With dead ends: 89 [2018-09-19 16:19:16,894 INFO L226 Difference]: Without dead ends: 66 [2018-09-19 16:19:16,895 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 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 16:19:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-19 16:19:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-09-19 16:19:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-19 16:19:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-19 16:19:16,905 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 36 [2018-09-19 16:19:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:16,905 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-19 16:19:16,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-19 16:19:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-19 16:19:16,907 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:16,907 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] [2018-09-19 16:19:16,907 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:16,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1211823761, now seen corresponding path program 1 times [2018-09-19 16:19:16,908 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:16,908 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 16:19:16,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:16,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:17,029 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 16:19:17,040 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 16:19:17,040 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:17,048 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:17,062 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 16:19:17,062 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:17,116 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 16:19:17,121 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 16:19:17,122 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:17,131 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:17,147 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 16:19:17,147 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:17,369 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 16:19:17,369 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:17,381 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:17,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:19:17,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:19:17,382 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:19:17,382 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:19:17,382 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 10 states. [2018-09-19 16:19:17,943 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:19:19,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:19,292 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2018-09-19 16:19:19,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:19:19,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-09-19 16:19:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:19,296 INFO L225 Difference]: With dead ends: 90 [2018-09-19 16:19:19,296 INFO L226 Difference]: Without dead ends: 62 [2018-09-19 16:19:19,297 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:19:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-19 16:19:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2018-09-19 16:19:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-19 16:19:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2018-09-19 16:19:19,305 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 37 [2018-09-19 16:19:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:19,306 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2018-09-19 16:19:19,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:19:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2018-09-19 16:19:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-19 16:19:19,308 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:19,309 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] [2018-09-19 16:19:19,309 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:19,309 INFO L82 PathProgramCache]: Analyzing trace with hash 353008393, now seen corresponding path program 1 times [2018-09-19 16:19:19,310 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:19,310 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 16:19:19,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:19,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:19,453 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 16:19:19,454 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:19,468 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:19,468 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:19,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:19,469 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:19,471 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:19,472 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2018-09-19 16:19:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:19,542 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2018-09-19 16:19:19,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:19,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-09-19 16:19:19,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:19,545 INFO L225 Difference]: With dead ends: 86 [2018-09-19 16:19:19,545 INFO L226 Difference]: Without dead ends: 63 [2018-09-19 16:19:19,546 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 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 16:19:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-19 16:19:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-19 16:19:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-19 16:19:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-09-19 16:19:19,554 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 54 [2018-09-19 16:19:19,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:19,554 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-09-19 16:19:19,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-09-19 16:19:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-19 16:19:19,559 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:19,559 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] [2018-09-19 16:19:19,560 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:19,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1732178434, now seen corresponding path program 1 times [2018-09-19 16:19:19,565 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:19,565 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 16:19:19,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:19,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:19,759 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 16:19:19,766 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 16:19:19,766 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:19,772 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:19,789 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 16:19:19,790 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:19,837 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 16:19:19,848 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 16:19:19,848 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:19,853 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:19,865 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 16:19:19,865 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:20,288 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 16:19:20,289 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:20,303 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:20,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:19:20,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:19:20,305 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:19:20,305 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:19:20,306 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2018-09-19 16:19:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:22,199 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2018-09-19 16:19:22,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:19:22,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2018-09-19 16:19:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:22,203 INFO L225 Difference]: With dead ends: 91 [2018-09-19 16:19:22,204 INFO L226 Difference]: Without dead ends: 63 [2018-09-19 16:19:22,205 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:19:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-19 16:19:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-19 16:19:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-19 16:19:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-09-19 16:19:22,213 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 55 [2018-09-19 16:19:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:22,214 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-09-19 16:19:22,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:19:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-09-19 16:19:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-19 16:19:22,216 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:22,216 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] [2018-09-19 16:19:22,216 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:22,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2057904238, now seen corresponding path program 1 times [2018-09-19 16:19:22,217 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:22,217 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 16:19:22,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:22,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:22,548 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 16:19:22,548 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:22,558 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:22,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 16:19:22,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 16:19:22,560 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 16:19:22,560 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 16:19:22,560 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2018-09-19 16:19:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:22,756 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2018-09-19 16:19:22,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 16:19:22,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2018-09-19 16:19:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:22,758 INFO L225 Difference]: With dead ends: 87 [2018-09-19 16:19:22,758 INFO L226 Difference]: Without dead ends: 63 [2018-09-19 16:19:22,760 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:19:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-19 16:19:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-19 16:19:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-19 16:19:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-09-19 16:19:22,768 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 56 [2018-09-19 16:19:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:22,768 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-09-19 16:19:22,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 16:19:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-09-19 16:19:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-19 16:19:22,770 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:22,770 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] [2018-09-19 16:19:22,771 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:22,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1248557612, now seen corresponding path program 1 times [2018-09-19 16:19:22,771 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:22,771 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 16:19:22,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:22,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:22,979 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 16:19:22,980 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:22,990 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:22,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:19:22,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:19:22,991 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:19:22,991 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:19:22,991 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2018-09-19 16:19:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:23,467 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2018-09-19 16:19:23,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-19 16:19:23,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-09-19 16:19:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:23,469 INFO L225 Difference]: With dead ends: 70 [2018-09-19 16:19:23,469 INFO L226 Difference]: Without dead ends: 67 [2018-09-19 16:19:23,470 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:19:23,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-19 16:19:23,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-19 16:19:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-19 16:19:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-09-19 16:19:23,479 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 56 [2018-09-19 16:19:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:23,480 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-09-19 16:19:23,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:19:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-09-19 16:19:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-19 16:19:23,481 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:23,482 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] [2018-09-19 16:19:23,482 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash 750722725, now seen corresponding path program 1 times [2018-09-19 16:19:23,483 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:23,483 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 16:19:23,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:23,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:23,613 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 16:19:23,613 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:23,625 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:23,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:19:23,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:19:23,626 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:19:23,626 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:19:23,627 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 4 states. [2018-09-19 16:19:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:23,665 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2018-09-19 16:19:23,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:19:23,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-09-19 16:19:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:23,667 INFO L225 Difference]: With dead ends: 91 [2018-09-19 16:19:23,668 INFO L226 Difference]: Without dead ends: 68 [2018-09-19 16:19:23,668 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 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 16:19:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-19 16:19:23,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-09-19 16:19:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-19 16:19:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-09-19 16:19:23,675 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 56 [2018-09-19 16:19:23,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:23,676 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-09-19 16:19:23,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:19:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-09-19 16:19:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-19 16:19:23,677 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:23,677 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] [2018-09-19 16:19:23,678 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash -395687202, now seen corresponding path program 1 times [2018-09-19 16:19:23,678 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:23,678 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 16:19:23,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:23,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:23,957 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 16:19:23,975 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 16:19:23,975 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:23,998 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:24,056 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 16:19:24,056 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:24,147 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 16:19:24,151 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 16:19:24,152 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:24,155 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:24,165 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 16:19:24,165 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:24,753 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 16:19:24,753 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:24,764 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:24,764 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:19:24,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:19:24,765 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:19:24,765 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:19:24,765 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2018-09-19 16:19:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:26,371 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2018-09-19 16:19:26,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:19:26,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-09-19 16:19:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:26,373 INFO L225 Difference]: With dead ends: 90 [2018-09-19 16:19:26,374 INFO L226 Difference]: Without dead ends: 57 [2018-09-19 16:19:26,374 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 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 16:19:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-19 16:19:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-19 16:19:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-19 16:19:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-09-19 16:19:26,380 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 57 [2018-09-19 16:19:26,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:26,381 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-09-19 16:19:26,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:19:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-09-19 16:19:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-19 16:19:26,382 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:19:26,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:19:26,383 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:19:26,383 INFO L82 PathProgramCache]: Analyzing trace with hash -161364143, now seen corresponding path program 1 times [2018-09-19 16:19:26,383 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:19:26,384 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 16:19:26,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:19:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:19:26,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:19:26,677 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 16:19:26,682 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 16:19:26,683 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:26,689 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:26,703 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 16:19:26,704 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:19:26,776 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 16:19:26,781 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 16:19:26,781 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:26,785 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:26,794 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 16:19:26,794 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:19:27,120 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 16:19:27,120 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:27,131 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:27,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-19 16:19:27,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-19 16:19:27,132 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-19 16:19:27,132 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:19:27,133 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 15 states. [2018-09-19 16:19:27,678 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-19 16:19:27,908 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-19 16:19:29,370 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-09-19 16:19:29,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:19:29,529 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-09-19 16:19:29,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:19:29,530 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2018-09-19 16:19:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:19:29,531 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:19:29,531 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:19:29,532 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2018-09-19 16:19:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:19:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:19:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:19:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:19:29,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2018-09-19 16:19:29,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:19:29,533 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:19:29,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-19 16:19:29,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:19:29,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:19:29,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:19:29,933 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 21 [2018-09-19 16:19:29,935 INFO L426 ceAbstractionStarter]: For program point isnan_doubleENTRY(line 16) no Hoare annotation was computed. [2018-09-19 16:19:29,935 INFO L426 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-09-19 16:19:29,935 INFO L426 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-09-19 16:19:29,936 INFO L426 ceAbstractionStarter]: For program point L31(lines 31 42) no Hoare annotation was computed. [2018-09-19 16:19:29,936 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 18 43) no Hoare annotation was computed. [2018-09-19 16:19:29,936 INFO L426 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-09-19 16:19:29,936 INFO L426 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-09-19 16:19:29,936 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-19 16:19:29,936 INFO L426 ceAbstractionStarter]: For program point L25-2(line 25) no Hoare annotation was computed. [2018-09-19 16:19:29,936 INFO L426 ceAbstractionStarter]: For program point L25-3(line 25) no Hoare annotation was computed. [2018-09-19 16:19:29,936 INFO L426 ceAbstractionStarter]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L422 ceAbstractionStarter]: At program point L21-3(lines 21 26) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L21-4(lines 18 43) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L429 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 18 43) the Hoare annotation is: true [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L34(lines 34 42) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 18 43) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L24-2(line 24) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-09-19 16:19:29,937 INFO L426 ceAbstractionStarter]: For program point L22-2(line 22) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point L22-3(line 22) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 54 64) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point L60-1(line 60) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point L58(line 58) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-09-19 16:19:29,938 INFO L426 ceAbstractionStarter]: For program point L58-1(line 58) no Hoare annotation was computed. [2018-09-19 16:19:29,939 INFO L426 ceAbstractionStarter]: For program point L58-2(line 58) no Hoare annotation was computed. [2018-09-19 16:19:29,939 INFO L426 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-09-19 16:19:29,939 INFO L426 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 54 64) no Hoare annotation was computed. [2018-09-19 16:19:29,939 INFO L426 ceAbstractionStarter]: For program point L58-3(line 58) no Hoare annotation was computed. [2018-09-19 16:19:29,939 INFO L422 ceAbstractionStarter]: At program point L57-3(lines 57 61) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-09-19 16:19:29,939 INFO L426 ceAbstractionStarter]: For program point L57-4(lines 57 61) no Hoare annotation was computed. [2018-09-19 16:19:29,939 INFO L429 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 54 64) the Hoare annotation is: true [2018-09-19 16:19:29,939 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:19:29,939 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 16:19:29,940 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:19:29,940 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:19:29,940 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 66 85) the Hoare annotation is: true [2018-09-19 16:19:29,940 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 66 85) no Hoare annotation was computed. [2018-09-19 16:19:29,940 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-09-19 16:19:29,940 INFO L426 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-09-19 16:19:29,940 INFO L426 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-09-19 16:19:29,940 INFO L422 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= main_~res~0 .cse0) (= (_ +zero 11 53) main_~x~0) |main_#t~short11| (= main_~y~0 .cse0))) [2018-09-19 16:19:29,940 INFO L426 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-09-19 16:19:29,940 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 66 85) no Hoare annotation was computed. [2018-09-19 16:19:29,940 INFO L422 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (and (= (_ +zero 11 53) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 11 53)))) [2018-09-19 16:19:29,941 INFO L426 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-09-19 16:19:29,941 INFO L426 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-09-19 16:19:29,941 INFO L426 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 45 52) no Hoare annotation was computed. [2018-09-19 16:19:29,941 INFO L429 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 45 52) the Hoare annotation is: true [2018-09-19 16:19:29,941 INFO L426 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 45 52) no Hoare annotation was computed. [2018-09-19 16:19:29,941 INFO L426 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-09-19 16:19:29,941 INFO L426 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-09-19 16:19:29,941 INFO L422 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= fmin_double_~x |fmin_double_#in~x|))) (or (and (exists ((v_prenex_3 (_ BitVec 64))) (and (= (fp ((_ extract 63 63) v_prenex_3) ((_ extract 62 52) v_prenex_3) ((_ extract 51 0) v_prenex_3)) |fmin_double_#in~x|) (not (bvule ((_ extract 63 32) v_prenex_3) (_ bv1048575 32))))) .cse0) (and (= fmin_double_~y |fmin_double_#in~y|) .cse0))) [2018-09-19 16:19:29,941 INFO L426 ceAbstractionStarter]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2018-09-19 16:19:29,942 INFO L422 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-09-19 16:19:29,942 INFO L426 ceAbstractionStarter]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2018-09-19 16:19:29,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:19:29 BoogieIcfgContainer [2018-09-19 16:19:29,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:19:29,954 INFO L168 Benchmark]: Toolchain (without parser) took 19146.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -892.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:19:29,955 INFO L168 Benchmark]: CDTParser took 0.24 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 16:19:29,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.24 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 16:19:29,957 INFO L168 Benchmark]: Boogie Preprocessor took 53.26 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 16:19:29,957 INFO L168 Benchmark]: RCFGBuilder took 765.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:19:29,958 INFO L168 Benchmark]: TraceAbstraction took 17951.09 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 126.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -129.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:19:29,962 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 371.24 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 53.26 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 765.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17951.09 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 126.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -129.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 65 locations, 1 error locations. SAFE Result, 17.8s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 11.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 690 SDtfs, 261 SDslu, 2789 SDs, 0 SdLazy, 1014 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, 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, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 69 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 557 ConstructedInterpolants, 86 QuantifiedInterpolants, 119134 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1232 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...