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_1130b_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:18:31,906 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:18:31,908 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:18:31,921 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:18:31,921 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:18:31,922 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:18:31,923 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:18:31,925 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:18:31,927 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:18:31,928 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:18:31,928 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:18:31,929 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:18:31,930 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:18:31,931 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:18:31,932 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:18:31,933 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:18:31,934 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:18:31,936 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:18:31,938 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:18:31,939 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:18:31,940 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:18:31,941 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:18:31,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:18:31,944 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:18:31,944 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:18:31,945 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:18:31,946 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:18:31,947 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:18:31,948 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:18:31,949 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:18:31,949 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:18:31,950 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:18:31,950 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:18:31,951 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:18:31,952 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:18:31,952 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:18:31,953 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 16:18:31,968 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:18:31,969 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:18:31,970 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:18:31,970 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:18:31,970 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:18:31,971 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:18:31,971 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:18:31,971 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:18:31,971 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:18:31,972 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:18:31,972 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:18:31,972 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:18:31,972 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:18:31,972 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:18:31,972 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:18:31,973 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:18:31,973 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:18:31,973 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:18:31,973 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:18:31,973 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:18:31,974 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:18:31,974 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:18:31,974 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:18:31,974 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:18:31,974 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:18:31,975 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:18:31,975 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:18:31,975 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:18:31,975 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:18:31,975 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:18:31,976 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:18:31,976 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:18:32,023 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:18:32,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:18:32,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:18:32,051 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:18:32,051 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:18:32,052 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130b_true-unreach-call.c [2018-09-19 16:18:32,401 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c23a977f/a04a03bdab1245d68533734266269abc/FLAG153c38181 [2018-09-19 16:18:32,614 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:18:32,615 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130b_true-unreach-call.c [2018-09-19 16:18:32,624 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c23a977f/a04a03bdab1245d68533734266269abc/FLAG153c38181 [2018-09-19 16:18:32,643 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c23a977f/a04a03bdab1245d68533734266269abc [2018-09-19 16:18:32,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:18:32,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:18:32,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:18:32,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:18:32,665 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:18:32,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:18:32" (1/1) ... [2018-09-19 16:18:32,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4225fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:32, skipping insertion in model container [2018-09-19 16:18:32,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:18:32" (1/1) ... [2018-09-19 16:18:32,683 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:18:33,001 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:18:33,022 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:18:33,082 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:18:33,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33 WrapperNode [2018-09-19 16:18:33,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:18:33,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:18:33,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:18:33,149 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:18:33,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (1/1) ... [2018-09-19 16:18:33,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (1/1) ... [2018-09-19 16:18:33,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (1/1) ... [2018-09-19 16:18:33,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (1/1) ... [2018-09-19 16:18:33,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (1/1) ... [2018-09-19 16:18:33,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (1/1) ... [2018-09-19 16:18:33,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (1/1) ... [2018-09-19 16:18:33,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:18:33,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:18:33,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:18:33,216 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:18:33,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (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 16:18:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:18:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:18:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-19 16:18:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2018-09-19 16:18:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-19 16:18:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:18:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:18:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:18:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-19 16:18:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2018-09-19 16:18:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:18:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:18:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:18:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:18:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:18:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:18:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-19 16:18:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:18:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:18:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:18:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:18:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:18:33,592 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:18:33,617 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:18:34,045 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:18:34,066 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:18:34,111 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:18:34,213 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:18:34,239 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:18:34,768 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:18:37,450 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:18:37,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:18:37 BoogieIcfgContainer [2018-09-19 16:18:37,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:18:37,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:18:37,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:18:37,455 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:18:37,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:18:32" (1/3) ... [2018-09-19 16:18:37,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517c6e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:18:37, skipping insertion in model container [2018-09-19 16:18:37,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:18:33" (2/3) ... [2018-09-19 16:18:37,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517c6e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:18:37, skipping insertion in model container [2018-09-19 16:18:37,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:18:37" (3/3) ... [2018-09-19 16:18:37,459 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130b_true-unreach-call.c [2018-09-19 16:18:37,468 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:18:37,477 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:18:37,530 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:18:37,531 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:18:37,531 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:18:37,531 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:18:37,531 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:18:37,532 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:18:37,532 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:18:37,532 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:18:37,532 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:18:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2018-09-19 16:18:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 16:18:37,564 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:18:37,565 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:18:37,568 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:18:37,572 INFO L82 PathProgramCache]: Analyzing trace with hash 153762501, now seen corresponding path program 1 times [2018-09-19 16:18:37,577 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:18:37,577 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:18:37,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:18:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:18:38,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:18:38,597 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 16:18:38,597 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:18:38,624 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:18:38,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:18:38,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:18:38,644 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:18:38,645 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:18:38,648 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 2 states. [2018-09-19 16:18:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:18:38,687 INFO L93 Difference]: Finished difference Result 255 states and 345 transitions. [2018-09-19 16:18:38,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:18:38,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-19 16:18:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:18:38,702 INFO L225 Difference]: With dead ends: 255 [2018-09-19 16:18:38,702 INFO L226 Difference]: Without dead ends: 127 [2018-09-19 16:18:38,707 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 16:18:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-19 16:18:38,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-19 16:18:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-19 16:18:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 154 transitions. [2018-09-19 16:18:38,760 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 154 transitions. Word has length 19 [2018-09-19 16:18:38,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:18:38,761 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 154 transitions. [2018-09-19 16:18:38,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:18:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 154 transitions. [2018-09-19 16:18:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-19 16:18:38,764 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:18:38,764 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:18:38,764 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:18:38,765 INFO L82 PathProgramCache]: Analyzing trace with hash 712911393, now seen corresponding path program 1 times [2018-09-19 16:18:38,766 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:18:38,766 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 16:18:38,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:18:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:18:40,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:18:40,298 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 16:18:40,318 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 16:18:40,319 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:40,328 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:40,393 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 16:18:40,394 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:18:40,477 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 16:18:40,501 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 16:18:40,502 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:40,520 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:40,569 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 16:18:40,570 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:18:40,881 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:18:40,882 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:18:40,884 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2018-09-19 16:18:40,905 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:18:40,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:18:40,929 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:40,954 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:41,039 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:18:41,040 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:41 [2018-09-19 16:18:41,556 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:18:41,774 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:18:41,774 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:18:41,776 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 56 [2018-09-19 16:18:41,792 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:18:41,816 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-19 16:18:41,817 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:41,866 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:41,940 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-09-19 16:18:41,941 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:76, output treesize:68 [2018-09-19 16:18:42,083 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2018-09-19 16:18:42,130 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:18:42,137 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-19 16:18:42,138 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:42,243 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:42,310 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:18:42,311 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:57, output treesize:31 [2018-09-19 16:18:43,399 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2018-09-19 16:18:43,446 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 16:18:43,447 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:18:43,479 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:18:43,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-19 16:18:43,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-19 16:18:43,482 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-19 16:18:43,483 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:18:43,483 INFO L87 Difference]: Start difference. First operand 127 states and 154 transitions. Second operand 15 states. [2018-09-19 16:18:44,922 WARN L178 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-19 16:18:45,643 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:18:46,792 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-09-19 16:18:48,056 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-09-19 16:18:48,539 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-09-19 16:18:49,220 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-19 16:18:57,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:18:57,658 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2018-09-19 16:18:57,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 16:18:57,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2018-09-19 16:18:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:18:57,704 INFO L225 Difference]: With dead ends: 154 [2018-09-19 16:18:57,704 INFO L226 Difference]: Without dead ends: 131 [2018-09-19 16:18:57,706 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2018-09-19 16:18:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-19 16:18:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-09-19 16:18:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-19 16:18:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2018-09-19 16:18:57,727 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 45 [2018-09-19 16:18:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:18:57,728 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2018-09-19 16:18:57,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-19 16:18:57,728 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2018-09-19 16:18:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-19 16:18:57,730 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:18:57,730 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:18:57,730 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:18:57,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1242045531, now seen corresponding path program 1 times [2018-09-19 16:18:57,732 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:18:57,732 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 16:18:57,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:18:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:18:57,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:18:58,000 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 16:18:58,000 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:18:58,011 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:18:58,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:18:58,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:18:58,013 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:18:58,013 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:18:58,013 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand 7 states. [2018-09-19 16:18:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:18:59,216 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2018-09-19 16:18:59,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:18:59,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-09-19 16:18:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:18:59,260 INFO L225 Difference]: With dead ends: 136 [2018-09-19 16:18:59,260 INFO L226 Difference]: Without dead ends: 133 [2018-09-19 16:18:59,261 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:18:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-19 16:18:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2018-09-19 16:18:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-19 16:18:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2018-09-19 16:18:59,276 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 47 [2018-09-19 16:18:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:18:59,277 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2018-09-19 16:18:59,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:18:59,277 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2018-09-19 16:18:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-19 16:18:59,279 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:18:59,279 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:18:59,279 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:18:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash -215187063, now seen corresponding path program 1 times [2018-09-19 16:18:59,280 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:18:59,281 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 16:18:59,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:18:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:18:59,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:18:59,506 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 13 [2018-09-19 16:18:59,518 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:18:59,521 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 19 [2018-09-19 16:18:59,522 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:59,540 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:59,557 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:59,558 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:10, output treesize:12 [2018-09-19 16:18:59,681 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 16:18:59,690 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 16:18:59,690 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:59,702 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:59,746 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 16:18:59,746 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2018-09-19 16:18:59,857 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 16:18:59,866 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 16:18:59,867 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:59,875 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:59,909 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 16:18:59,910 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:25 [2018-09-19 16:19:19,075 WARN L178 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:19:19,097 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:19:19,099 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:19:19,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2018-09-19 16:19:19,103 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:19,122 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:19,123 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:4 [2018-09-19 16:19:19,248 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 16:19:19,249 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:19,269 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:19,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 16:19:19,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 16:19:19,270 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 16:19:19,270 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=97, Unknown=7, NotChecked=0, Total=132 [2018-09-19 16:19:19,271 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand 12 states. [2018-09-19 16:19:55,034 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:21:35,122 WARN L178 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 33 Received shutdown request... [2018-09-19 16:23:25,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:23:25,777 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 16:23:25,782 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 16:23:25,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:23:25 BoogieIcfgContainer [2018-09-19 16:23:25,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:23:25,784 INFO L168 Benchmark]: Toolchain (without parser) took 293129.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -247.1 MB). Peak memory consumption was 492.1 MB. Max. memory is 7.1 GB. [2018-09-19 16:23:25,785 INFO L168 Benchmark]: CDTParser took 0.22 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 16:23:25,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.46 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 16:23:25,787 INFO L168 Benchmark]: Boogie Preprocessor took 66.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:23:25,787 INFO L168 Benchmark]: RCFGBuilder took 4235.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-09-19 16:23:25,788 INFO L168 Benchmark]: TraceAbstraction took 288331.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 495.2 MB). Peak memory consumption was 495.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:23:25,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 489.46 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 66.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4235.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 288331.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 495.2 MB). Peak memory consumption was 495.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 191]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 191). Cancelled while BasicCegarLoop was constructing difference of abstraction (131states) and FLOYD_HOARE automaton (currently 14 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (86 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 135 locations, 1 error locations. TIMEOUT Result, 288.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 262.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 513 SDtfs, 466 SDslu, 2131 SDs, 0 SdLazy, 660 SolverSat, 32 SolverUnsat, 99 SolverUnknown, 0 SolverNotchecked, 222.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 48.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 155 ConstructedInterpolants, 61 QuantifiedInterpolants, 98671 SizeOfPredicates, 29 NumberOfNonLiveVariables, 364 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown