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_0683a_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:04:23,420 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:04:23,422 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:04:23,441 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:04:23,442 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:04:23,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:04:23,447 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:04:23,451 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:04:23,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:04:23,456 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:04:23,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:04:23,458 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:04:23,459 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:04:23,463 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:04:23,467 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:04:23,468 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:04:23,472 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:04:23,476 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:04:23,480 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:04:23,482 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:04:23,484 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:04:23,487 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:04:23,492 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:04:23,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:04:23,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:04:23,493 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:04:23,496 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:04:23,497 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:04:23,498 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:04:23,501 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:04:23,502 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:04:23,502 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:04:23,503 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:04:23,503 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:04:23,506 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:04:23,508 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:04:23,510 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 16:04:23,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:04:23,534 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:04:23,535 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:04:23,535 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:04:23,535 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:04:23,536 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:04:23,536 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:04:23,536 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:04:23,536 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:04:23,537 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:04:23,537 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:04:23,537 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:04:23,537 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:04:23,537 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:04:23,538 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:04:23,538 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:04:23,538 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:04:23,538 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:04:23,538 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:04:23,539 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:04:23,539 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:04:23,539 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:04:23,539 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:04:23,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:04:23,540 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:04:23,540 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:04:23,540 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:04:23,541 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:04:23,541 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:04:23,541 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:04:23,541 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:04:23,541 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:04:23,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:04:23,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:04:23,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:04:23,604 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:04:23,604 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:04:23,605 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0683a_true-unreach-call.c [2018-09-19 16:04:23,943 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86561d2cf/6cb3928d5881434d8527f22431172a64/FLAG034de8dff [2018-09-19 16:04:24,155 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:04:24,156 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0683a_true-unreach-call.c [2018-09-19 16:04:24,165 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86561d2cf/6cb3928d5881434d8527f22431172a64/FLAG034de8dff [2018-09-19 16:04:24,186 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86561d2cf/6cb3928d5881434d8527f22431172a64 [2018-09-19 16:04:24,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:04:24,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:04:24,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:04:24,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:04:24,207 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:04:24,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9340cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24, skipping insertion in model container [2018-09-19 16:04:24,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,223 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:04:24,526 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:04:24,563 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:04:24,651 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:04:24,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24 WrapperNode [2018-09-19 16:04:24,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:04:24,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:04:24,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:04:24,703 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:04:24,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (1/1) ... [2018-09-19 16:04:24,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:04:24,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:04:24,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:04:24,778 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:04:24,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (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 16:04:24,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:04:24,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:04:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 16:04:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2018-09-19 16:04:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2018-09-19 16:04:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2018-09-19 16:04:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2018-09-19 16:04:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-19 16:04:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:04:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:04:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:04:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 16:04:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:04:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:04:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:04:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:04:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:04:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:04:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2018-09-19 16:04:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2018-09-19 16:04:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2018-09-19 16:04:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2018-09-19 16:04:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-19 16:04:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:04:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:04:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:04:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:04:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:04:25,216 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:25,256 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:25,339 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:25,354 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:25,430 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:25,478 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:25,498 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,064 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,078 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,108 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,830 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,876 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,893 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,916 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,928 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:26,940 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:28,675 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:28,742 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:28,852 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:30,954 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:30,976 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:30,998 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:31,016 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:04:48,012 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:04:48,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:04:48 BoogieIcfgContainer [2018-09-19 16:04:48,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:04:48,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:04:48,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:04:48,017 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:04:48,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:04:24" (1/3) ... [2018-09-19 16:04:48,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ac36a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:04:48, skipping insertion in model container [2018-09-19 16:04:48,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:04:24" (2/3) ... [2018-09-19 16:04:48,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ac36a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:04:48, skipping insertion in model container [2018-09-19 16:04:48,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:04:48" (3/3) ... [2018-09-19 16:04:48,021 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0683a_true-unreach-call.c [2018-09-19 16:04:48,030 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:04:48,037 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:04:48,082 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:04:48,083 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:04:48,083 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:04:48,083 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:04:48,083 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:04:48,084 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:04:48,084 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:04:48,084 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:04:48,085 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:04:48,111 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states. [2018-09-19 16:04:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-19 16:04:48,120 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:48,121 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] [2018-09-19 16:04:48,124 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:48,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2066692559, now seen corresponding path program 1 times [2018-09-19 16:04:48,134 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:48,135 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 16:04:48,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:48,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:48,360 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 16:04:48,361 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:48,377 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:48,377 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:04:48,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:04:48,393 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:04:48,394 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:04:48,396 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 2 states. [2018-09-19 16:04:48,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:48,453 INFO L93 Difference]: Finished difference Result 458 states and 595 transitions. [2018-09-19 16:04:48,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:04:48,455 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-09-19 16:04:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:48,476 INFO L225 Difference]: With dead ends: 458 [2018-09-19 16:04:48,476 INFO L226 Difference]: Without dead ends: 228 [2018-09-19 16:04:48,486 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 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 16:04:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-19 16:04:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-09-19 16:04:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-09-19 16:04:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 269 transitions. [2018-09-19 16:04:48,550 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 269 transitions. Word has length 28 [2018-09-19 16:04:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:48,550 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 269 transitions. [2018-09-19 16:04:48,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:04:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 269 transitions. [2018-09-19 16:04:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-19 16:04:48,554 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:48,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:04:48,554 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1085453947, now seen corresponding path program 1 times [2018-09-19 16:04:48,556 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:48,557 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 16:04:48,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:48,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:48,889 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 16:04:48,890 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:48,906 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:48,907 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 16:04:48,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 16:04:48,909 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 16:04:48,909 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 16:04:48,909 INFO L87 Difference]: Start difference. First operand 228 states and 269 transitions. Second operand 3 states. [2018-09-19 16:04:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:48,956 INFO L93 Difference]: Finished difference Result 413 states and 494 transitions. [2018-09-19 16:04:48,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 16:04:48,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-09-19 16:04:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:48,962 INFO L225 Difference]: With dead ends: 413 [2018-09-19 16:04:48,962 INFO L226 Difference]: Without dead ends: 228 [2018-09-19 16:04:48,966 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 16:04:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-19 16:04:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-09-19 16:04:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-09-19 16:04:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 268 transitions. [2018-09-19 16:04:48,989 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 268 transitions. Word has length 67 [2018-09-19 16:04:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:48,989 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 268 transitions. [2018-09-19 16:04:48,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 16:04:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 268 transitions. [2018-09-19 16:04:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-19 16:04:48,993 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:48,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:48,993 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:48,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1778228994, now seen corresponding path program 1 times [2018-09-19 16:04:48,995 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:48,995 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 16:04:49,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:49,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:49,661 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 16:04:49,667 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:04:49,668 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:49,673 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:49,706 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 16:04:49,707 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:04:49,825 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 16:04:49,846 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 16:04:49,846 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:49,869 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:49,920 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 16:04:49,920 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:04:51,005 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:04:51,021 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:04:51,022 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 16:04:51,078 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:51,105 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 16:04:51,106 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:51,196 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:51,289 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 16:04:51,289 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:31 [2018-09-19 16:04:51,916 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 42 treesize of output 33 [2018-09-19 16:04:51,944 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:51,976 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 33 treesize of output 29 [2018-09-19 16:04:51,977 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:52,046 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:52,263 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 16:04:52,264 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:35 [2018-09-19 16:04:54,529 WARN L178 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 30 [2018-09-19 16:04:54,564 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 26 treesize of output 20 [2018-09-19 16:04:54,630 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:54,636 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 20 treesize of output 11 [2018-09-19 16:04:54,637 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:54,660 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:54,782 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:54,783 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:42, output treesize:21 [2018-09-19 16:04:55,390 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 16:04:55,409 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 16:04:55,409 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:55,442 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:55,573 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 16:04:55,573 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2018-09-19 16:04:55,829 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 16:04:55,848 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 16:04:55,849 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:55,855 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:55,887 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 16:04:55,888 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:33 [2018-09-19 16:04:57,200 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 16:04:57,200 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:57,218 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:57,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-09-19 16:04:57,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-19 16:04:57,219 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-19 16:04:57,220 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2018-09-19 16:04:57,220 INFO L87 Difference]: Start difference. First operand 228 states and 268 transitions. Second operand 24 states. [2018-09-19 16:04:59,886 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-09-19 16:05:01,951 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:05:06,949 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:05:07,815 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:05:08,654 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:05:09,273 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:05:09,885 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:05:10,413 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:05:10,957 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:05:11,782 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-09-19 16:05:12,807 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:05:14,931 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:05:15,605 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:05:17,470 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-09-19 16:05:43,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:05:43,353 INFO L93 Difference]: Finished difference Result 286 states and 335 transitions. [2018-09-19 16:05:43,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-19 16:05:43,354 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 83 [2018-09-19 16:05:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:05:43,357 INFO L225 Difference]: With dead ends: 286 [2018-09-19 16:05:43,357 INFO L226 Difference]: Without dead ends: 221 [2018-09-19 16:05:43,359 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=235, Invalid=1927, Unknown=0, NotChecked=0, Total=2162 [2018-09-19 16:05:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-09-19 16:05:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-09-19 16:05:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-09-19 16:05:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 253 transitions. [2018-09-19 16:05:43,383 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 253 transitions. Word has length 83 [2018-09-19 16:05:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:05:43,383 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 253 transitions. [2018-09-19 16:05:43,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-19 16:05:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 253 transitions. [2018-09-19 16:05:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-19 16:05:43,387 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:05:43,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:05:43,388 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:05:43,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1758740902, now seen corresponding path program 1 times [2018-09-19 16:05:43,389 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:05:43,389 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 16:05:43,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:05:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:05:43,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:05:43,642 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 16:05:43,650 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 16:05:43,651 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:43,656 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:43,678 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 16:05:43,678 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:05:43,719 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 16:05:43,724 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 16:05:43,725 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:43,732 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:43,745 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 16:05:43,745 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:05:44,470 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-09-19 16:05:44,757 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 16:05:44,757 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:05:44,770 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:05:44,770 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:05:44,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:05:44,771 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:05:44,771 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:05:44,772 INFO L87 Difference]: Start difference. First operand 221 states and 253 transitions. Second operand 11 states. [2018-09-19 16:05:47,405 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:05:47,932 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-09-19 16:05:48,399 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-09-19 16:05:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:05:57,358 INFO L93 Difference]: Finished difference Result 299 states and 349 transitions. [2018-09-19 16:05:57,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:05:57,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2018-09-19 16:05:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:05:57,363 INFO L225 Difference]: With dead ends: 299 [2018-09-19 16:05:57,363 INFO L226 Difference]: Without dead ends: 223 [2018-09-19 16:05:57,364 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:05:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-19 16:05:57,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2018-09-19 16:05:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-09-19 16:05:57,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 252 transitions. [2018-09-19 16:05:57,383 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 252 transitions. Word has length 88 [2018-09-19 16:05:57,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:05:57,384 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 252 transitions. [2018-09-19 16:05:57,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:05:57,384 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 252 transitions. [2018-09-19 16:05:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-19 16:05:57,386 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:05:57,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:05:57,386 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:05:57,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1856168024, now seen corresponding path program 1 times [2018-09-19 16:05:57,387 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:05:57,387 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 16:05:57,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:05:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:05:57,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:05:57,755 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:05:57,756 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:05:57,757 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 16:05:57,777 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:05:57,797 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 16:05:57,798 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:57,815 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:57,839 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 16:05:57,840 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:05:58,043 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:05:58,043 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:05:58,044 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 16:05:58,056 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:05:58,076 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 16:05:58,077 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:58,114 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:58,160 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 16:05:58,161 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:05:58,218 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 16:05:58,225 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:05:58,232 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 16:05:58,233 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:58,247 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:58,266 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 16:05:58,267 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:05:58,605 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 16:05:58,605 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:05:58,617 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:05:58,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:05:58,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:05:58,619 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:05:58,619 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:05:58,619 INFO L87 Difference]: Start difference. First operand 221 states and 252 transitions. Second operand 11 states. [2018-09-19 16:05:59,997 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:06:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:10,635 INFO L93 Difference]: Finished difference Result 289 states and 335 transitions. [2018-09-19 16:06:10,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:06:10,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2018-09-19 16:06:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:10,640 INFO L225 Difference]: With dead ends: 289 [2018-09-19 16:06:10,640 INFO L226 Difference]: Without dead ends: 215 [2018-09-19 16:06:10,641 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:06:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-19 16:06:10,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-19 16:06:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-19 16:06:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 242 transitions. [2018-09-19 16:06:10,657 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 242 transitions. Word has length 88 [2018-09-19 16:06:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:10,658 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 242 transitions. [2018-09-19 16:06:10,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:06:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 242 transitions. [2018-09-19 16:06:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-19 16:06:10,659 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:10,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:10,660 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:10,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1550500710, now seen corresponding path program 1 times [2018-09-19 16:06:10,661 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:10,661 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) [2018-09-19 16:06:10,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 16:06:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:10,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:10,996 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 16:06:11,002 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 16:06:11,002 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:11,007 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:11,022 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 16:06:11,023 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:06:11,063 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 16:06:11,067 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 16:06:11,067 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:11,070 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:11,081 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 16:06:11,081 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:06:11,466 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 16:06:11,466 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:06:11,478 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:06:11,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:06:11,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:06:11,479 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:06:11,479 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:06:11,479 INFO L87 Difference]: Start difference. First operand 215 states and 242 transitions. Second operand 9 states. [2018-09-19 16:06:16,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:16,736 INFO L93 Difference]: Finished difference Result 238 states and 265 transitions. [2018-09-19 16:06:16,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:06:16,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2018-09-19 16:06:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:16,741 INFO L225 Difference]: With dead ends: 238 [2018-09-19 16:06:16,741 INFO L226 Difference]: Without dead ends: 213 [2018-09-19 16:06:16,742 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:06:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-19 16:06:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-09-19 16:06:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-09-19 16:06:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 238 transitions. [2018-09-19 16:06:16,757 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 238 transitions. Word has length 88 [2018-09-19 16:06:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:16,757 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 238 transitions. [2018-09-19 16:06:16,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:06:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 238 transitions. [2018-09-19 16:06:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-19 16:06:16,759 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:16,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:16,759 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash -189435969, now seen corresponding path program 1 times [2018-09-19 16:06:16,760 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:16,760 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 16:06:16,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:06:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:16,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:16,998 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 16:06:17,004 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 16:06:17,005 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:17,010 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:17,026 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 16:06:17,027 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:06:17,069 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 16:06:17,074 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 16:06:17,074 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:17,077 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:17,088 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 16:06:17,088 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:06:17,914 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-09-19 16:06:18,136 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 16:06:18,137 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:06:18,148 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:06:18,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 16:06:18,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 16:06:18,149 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 16:06:18,149 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:06:18,149 INFO L87 Difference]: Start difference. First operand 213 states and 238 transitions. Second operand 12 states. [2018-09-19 16:06:18,967 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:06:20,380 WARN L178 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:06:21,257 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:06:21,477 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:06:22,320 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-09-19 16:06:22,752 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-09-19 16:06:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:29,835 INFO L93 Difference]: Finished difference Result 238 states and 263 transitions. [2018-09-19 16:06:29,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:06:29,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2018-09-19 16:06:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:29,838 INFO L225 Difference]: With dead ends: 238 [2018-09-19 16:06:29,838 INFO L226 Difference]: Without dead ends: 215 [2018-09-19 16:06:29,839 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2018-09-19 16:06:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-19 16:06:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2018-09-19 16:06:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-09-19 16:06:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 237 transitions. [2018-09-19 16:06:29,857 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 237 transitions. Word has length 89 [2018-09-19 16:06:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:29,858 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 237 transitions. [2018-09-19 16:06:29,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 16:06:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 237 transitions. [2018-09-19 16:06:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-19 16:06:29,859 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:29,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:29,860 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1869313562, now seen corresponding path program 1 times [2018-09-19 16:06:29,861 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:29,861 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 16:06:29,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:06:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:30,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:30,155 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 16:06:30,155 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:06:30,168 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:06:30,168 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 16:06:30,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 16:06:30,169 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 16:06:30,169 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:06:30,169 INFO L87 Difference]: Start difference. First operand 213 states and 237 transitions. Second operand 6 states. [2018-09-19 16:06:40,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:40,011 INFO L93 Difference]: Finished difference Result 220 states and 244 transitions. [2018-09-19 16:06:40,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 16:06:40,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-09-19 16:06:40,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:40,014 INFO L225 Difference]: With dead ends: 220 [2018-09-19 16:06:40,014 INFO L226 Difference]: Without dead ends: 217 [2018-09-19 16:06:40,015 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:06:40,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-09-19 16:06:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-09-19 16:06:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-09-19 16:06:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 241 transitions. [2018-09-19 16:06:40,033 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 241 transitions. Word has length 90 [2018-09-19 16:06:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:40,033 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 241 transitions. [2018-09-19 16:06:40,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 16:06:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 241 transitions. [2018-09-19 16:06:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-09-19 16:06:40,034 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:40,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:40,035 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:40,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1622021358, now seen corresponding path program 1 times [2018-09-19 16:06:40,036 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:40,036 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) [2018-09-19 16:06:40,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:06:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:40,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:40,378 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 16:06:40,385 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 16:06:40,385 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:40,390 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:40,406 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 16:06:40,406 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:06:40,445 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 16:06:40,449 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 16:06:40,449 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:40,453 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:40,465 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 16:06:40,465 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:06:40,829 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 16:06:40,829 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:06:40,842 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:06:40,842 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:06:40,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:06:40,843 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:06:40,843 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:06:40,843 INFO L87 Difference]: Start difference. First operand 217 states and 241 transitions. Second operand 9 states. [2018-09-19 16:06:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:49,544 INFO L93 Difference]: Finished difference Result 275 states and 307 transitions. [2018-09-19 16:06:49,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:06:49,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2018-09-19 16:06:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:49,549 INFO L225 Difference]: With dead ends: 275 [2018-09-19 16:06:49,550 INFO L226 Difference]: Without dead ends: 215 [2018-09-19 16:06:49,551 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:06:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-19 16:06:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-19 16:06:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-19 16:06:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 236 transitions. [2018-09-19 16:06:49,570 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 236 transitions. Word has length 91 [2018-09-19 16:06:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:49,571 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 236 transitions. [2018-09-19 16:06:49,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:06:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 236 transitions. [2018-09-19 16:06:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-09-19 16:06:49,572 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:49,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:49,573 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:49,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1144103331, now seen corresponding path program 1 times [2018-09-19 16:06:49,574 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:49,574 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 16:06:49,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:06:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:49,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:49,884 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 16:06:49,891 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 16:06:49,891 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:49,896 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:49,912 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 16:06:49,913 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:06:49,951 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 16:06:49,959 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 16:06:49,959 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:49,962 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:49,972 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 16:06:49,973 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:06:50,692 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-09-19 16:06:50,800 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 16:06:50,801 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:06:50,817 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:06:50,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:06:50,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:06:50,818 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:06:50,818 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:06:50,818 INFO L87 Difference]: Start difference. First operand 215 states and 236 transitions. Second operand 11 states. [2018-09-19 16:06:52,337 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:06:53,203 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-09-19 16:06:53,464 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2018-09-19 16:06:54,932 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-09-19 16:06:59,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:59,463 INFO L93 Difference]: Finished difference Result 234 states and 254 transitions. [2018-09-19 16:06:59,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:06:59,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2018-09-19 16:06:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:59,466 INFO L225 Difference]: With dead ends: 234 [2018-09-19 16:06:59,466 INFO L226 Difference]: Without dead ends: 107 [2018-09-19 16:06:59,467 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:06:59,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-19 16:06:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-19 16:06:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-19 16:06:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 106 transitions. [2018-09-19 16:06:59,476 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 106 transitions. Word has length 91 [2018-09-19 16:06:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:59,477 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 106 transitions. [2018-09-19 16:06:59,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:06:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 106 transitions. [2018-09-19 16:06:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-19 16:06:59,478 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:59,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:59,478 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:59,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1052459682, now seen corresponding path program 1 times [2018-09-19 16:06:59,479 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:59,479 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 16:06:59,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:06:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:59,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:59,828 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 16:06:59,835 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 16:06:59,836 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:59,841 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:59,858 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 16:06:59,859 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:06:59,918 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 16:06:59,948 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 16:06:59,948 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:59,958 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:59,968 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 16:06:59,968 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:07:00,239 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 16:07:00,239 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:07:00,251 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:07:00,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 16:07:00,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 16:07:00,255 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 16:07:00,256 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:07:00,256 INFO L87 Difference]: Start difference. First operand 107 states and 106 transitions. Second operand 13 states. [2018-09-19 16:07:05,647 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:07:05,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:07:05,756 INFO L93 Difference]: Finished difference Result 107 states and 106 transitions. [2018-09-19 16:07:05,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:07:05,757 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2018-09-19 16:07:05,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:07:05,757 INFO L225 Difference]: With dead ends: 107 [2018-09-19 16:07:05,758 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:07:05,759 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2018-09-19 16:07:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:07:05,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:07:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:07:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:07:05,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2018-09-19 16:07:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:07:05,761 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:07:05,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 16:07:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:07:05,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:07:05,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:07:06,151 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2018-09-19 16:07:51,318 WARN L178 SmtUtils]: Spent 44.92 s on a formula simplification. DAG size of input: 214 DAG size of output: 163 [2018-09-19 16:08:31,922 WARN L178 SmtUtils]: Spent 40.60 s on a formula simplification. DAG size of input: 214 DAG size of output: 163 [2018-09-19 16:08:34,343 WARN L178 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 71 DAG size of output: 32 Received shutdown request... [2018-09-19 16:09:06,783 WARN L186 SmtUtils]: Removed 9 from assertion stack [2018-09-19 16:09:06,784 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-19 16:09:06,786 INFO L168 Benchmark]: Toolchain (without parser) took 282588.22 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -664.3 MB). Peak memory consumption was 392.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:09:06,787 INFO L168 Benchmark]: CDTParser took 0.23 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 16:09:06,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.73 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-19 16:09:06,788 INFO L168 Benchmark]: Boogie Preprocessor took 74.98 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 16:09:06,788 INFO L168 Benchmark]: RCFGBuilder took 23234.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -726.5 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2018-09-19 16:09:06,789 INFO L168 Benchmark]: TraceAbstraction took 258771.09 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 329.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 41.1 MB). Peak memory consumption was 370.4 MB. Max. memory is 7.1 GB. [2018-09-19 16:09:06,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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. * CACSL2BoogieTranslator took 501.73 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.98 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 23234.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -726.5 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258771.09 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 329.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 41.1 MB). Peak memory consumption was 370.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 298]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 214. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown