java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/standard_strcpy_false-valid-deref_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-4cf2d92 [2018-03-28 14:34:09,554 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-03-28 14:34:09,556 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-03-28 14:34:09,570 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-03-28 14:34:09,570 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-03-28 14:34:09,571 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-03-28 14:34:09,572 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-03-28 14:34:09,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-03-28 14:34:09,576 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-03-28 14:34:09,577 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-03-28 14:34:09,578 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-03-28 14:34:09,578 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-03-28 14:34:09,579 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-03-28 14:34:09,580 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-03-28 14:34:09,581 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-03-28 14:34:09,583 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-03-28 14:34:09,585 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-03-28 14:34:09,587 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-03-28 14:34:09,588 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-03-28 14:34:09,590 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-03-28 14:34:09,592 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-03-28 14:34:09,592 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-03-28 14:34:09,592 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-03-28 14:34:09,593 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-03-28 14:34:09,594 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-03-28 14:34:09,596 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-03-28 14:34:09,596 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-03-28 14:34:09,597 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-03-28 14:34:09,597 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-03-28 14:34:09,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-03-28 14:34:09,598 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-03-28 14:34:09,599 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-03-28 14:34:09,620 INFO L110 SettingsManager]: Loading preferences was successful [2018-03-28 14:34:09,620 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-03-28 14:34:09,621 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-03-28 14:34:09,621 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-03-28 14:34:09,621 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-03-28 14:34:09,621 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-03-28 14:34:09,621 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-03-28 14:34:09,622 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-03-28 14:34:09,622 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-03-28 14:34:09,622 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-03-28 14:34:09,622 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-03-28 14:34:09,622 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-03-28 14:34:09,622 INFO L133 SettingsManager]: * sizeof long=4 [2018-03-28 14:34:09,623 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-03-28 14:34:09,623 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-03-28 14:34:09,623 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-03-28 14:34:09,623 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-03-28 14:34:09,623 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-03-28 14:34:09,623 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-03-28 14:34:09,623 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-03-28 14:34:09,624 INFO L133 SettingsManager]: * sizeof long double=12 [2018-03-28 14:34:09,624 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-03-28 14:34:09,624 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-03-28 14:34:09,624 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-03-28 14:34:09,624 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-03-28 14:34:09,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-28 14:34:09,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-03-28 14:34:09,625 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-03-28 14:34:09,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-03-28 14:34:09,625 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-03-28 14:34:09,625 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-03-28 14:34:09,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:09,626 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-03-28 14:34:09,626 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-03-28 14:34:09,627 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-03-28 14:34:09,627 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-03-28 14:34:09,627 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-03-28 14:34:09,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-03-28 14:34:09,669 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-03-28 14:34:09,672 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-03-28 14:34:09,673 INFO L271 PluginConnector]: Initializing CDTParser... [2018-03-28 14:34:09,674 INFO L276 PluginConnector]: CDTParser initialized [2018-03-28 14:34:09,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_false-valid-deref_ground.i [2018-03-28 14:34:10,009 INFO L228 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa9120691a [2018-03-28 14:34:10,123 INFO L291 CDTParser]: IsIndexed: true [2018-03-28 14:34:10,124 INFO L292 CDTParser]: Found 1 translation units. [2018-03-28 14:34:10,124 INFO L171 CDTParser]: Scanning standard_strcpy_false-valid-deref_ground.i [2018-03-28 14:34:10,125 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-03-28 14:34:10,126 INFO L215 ultiparseSymbolTable]: [2018-03-28 14:34:10,126 INFO L218 ultiparseSymbolTable]: Function table: [2018-03-28 14:34:10,126 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert ('__VERIFIER_assert') in standard_strcpy_false-valid-deref_ground.i [2018-03-28 14:34:10,126 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in standard_strcpy_false-valid-deref_ground.i [2018-03-28 14:34:10,126 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-03-28 14:34:10,127 INFO L233 ultiparseSymbolTable]: [2018-03-28 14:34:10,141 INFO L334 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa9120691a [2018-03-28 14:34:10,146 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-03-28 14:34:10,150 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-03-28 14:34:10,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-03-28 14:34:10,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-03-28 14:34:10,157 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-03-28 14:34:10,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac57c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10, skipping insertion in model container [2018-03-28 14:34:10,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,174 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-28 14:34:10,185 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-28 14:34:10,324 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-28 14:34:10,338 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-28 14:34:10,342 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 5 non ball SCCs. Number of states in SCCs 5. [2018-03-28 14:34:10,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10 WrapperNode [2018-03-28 14:34:10,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-03-28 14:34:10,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-03-28 14:34:10,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-03-28 14:34:10,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-03-28 14:34:10,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-03-28 14:34:10,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-03-28 14:34:10,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-03-28 14:34:10,374 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-03-28 14:34:10,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (1/1) ... No working directory specified, using /storage/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 [2018-03-28 14:34:10,432 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-03-28 14:34:10,432 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-03-28 14:34:10,432 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-03-28 14:34:10,433 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-03-28 14:34:10,433 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-03-28 14:34:10,433 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-03-28 14:34:10,433 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-03-28 14:34:10,433 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-03-28 14:34:10,433 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-03-28 14:34:10,628 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-03-28 14:34:10,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 02:34:10 BoogieIcfgContainer [2018-03-28 14:34:10,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-03-28 14:34:10,629 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-03-28 14:34:10,629 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-03-28 14:34:10,630 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-03-28 14:34:10,634 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 02:34:10" (1/1) ... [2018-03-28 14:34:10,638 WARN L218 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-03-28 14:34:10,646 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,647 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,647 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,647 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,648 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{main_~src~0=v_main_~src~0_1} AuxVars[] AssignedVars[main_~src~0] [2018-03-28 14:34:10,648 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{main_~dst~0=v_main_~dst~0_1} AuxVars[] AssignedVars[main_~dst~0] [2018-03-28 14:34:10,649 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= v_main_~i~0_1 0) InVars {} OutVars{main_~i~0=v_main_~i~0_1} AuxVars[] AssignedVars[main_~i~0] [2018-03-28 14:34:10,649 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,649 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,650 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (or (not (< v_main_~i~0_2 100000)) (not (<= 0 v_main_~i~0_2))) InVars {main_~i~0=v_main_~i~0_2} OutVars{main_~i~0=v_main_~i~0_2} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,650 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,650 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[main_~x~0] [2018-03-28 14:34:10,651 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= (select v_main_~src~0_2 v_main_~i~0_3) 0) InVars {main_~src~0=v_main_~src~0_2, main_~i~0=v_main_~i~0_3} OutVars{main_~src~0=v_main_~src~0_2, main_~i~0=v_main_~i~0_3} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,651 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (not (= (select v_main_~src~0_3 v_main_~i~0_4) 0)) InVars {main_~src~0=v_main_~src~0_3, main_~i~0=v_main_~i~0_4} OutVars{main_~src~0=v_main_~src~0_3, main_~i~0=v_main_~i~0_4} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,651 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= v_main_~x~0_2 0) InVars {} OutVars{main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_~x~0] [2018-03-28 14:34:10,652 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (or (not (< v_main_~i~0_5 100000)) (not (<= 0 v_main_~i~0_5))) InVars {main_~i~0=v_main_~i~0_5} OutVars{main_~i~0=v_main_~i~0_5} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,652 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,652 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,652 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,653 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (or (not (< v_main_~i~0_6 100000)) (not (<= 0 v_main_~i~0_6))) InVars {main_~i~0=v_main_~i~0_6} OutVars{main_~i~0=v_main_~i~0_6} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,653 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,653 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (not (< v_main_~x~0_3 v_main_~i~0_10)) InVars {main_~x~0=v_main_~x~0_3, main_~i~0=v_main_~i~0_10} OutVars{main_~x~0=v_main_~x~0_3, main_~i~0=v_main_~i~0_10} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,654 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (< v_main_~x~0_4 v_main_~i~0_11) InVars {main_~x~0=v_main_~x~0_4, main_~i~0=v_main_~i~0_11} OutVars{main_~x~0=v_main_~x~0_4, main_~i~0=v_main_~i~0_11} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,654 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= |v_main_#res_1| 0) InVars {} OutVars{main_#res=|v_main_#res_1|} AuxVars[] AssignedVars[main_#res] [2018-03-28 14:34:10,654 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= v_main_~dst~0_2 (store v_main_~dst~0_3 v_main_~i~0_7 (select v_main_~src~0_4 v_main_~i~0_7))) InVars {main_~src~0=v_main_~src~0_4, main_~i~0=v_main_~i~0_7, main_~dst~0=v_main_~dst~0_3} OutVars{main_~src~0=v_main_~src~0_4, main_~i~0=v_main_~i~0_7, main_~dst~0=v_main_~dst~0_2} AuxVars[] AssignedVars[main_~dst~0] [2018-03-28 14:34:10,655 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (or (not (<= 0 v_main_~x~0_5)) (not (< v_main_~x~0_5 100000))) InVars {main_~x~0=v_main_~x~0_5} OutVars{main_~x~0=v_main_~x~0_5} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,655 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,655 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,655 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= v_main_~i~0_8 (+ v_main_~i~0_9 1)) InVars {main_~i~0=v_main_~i~0_9} OutVars{main_~i~0=v_main_~i~0_8} AuxVars[] AssignedVars[main_~i~0] [2018-03-28 14:34:10,656 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (or (not (<= 0 v_main_~x~0_6)) (not (< v_main_~x~0_6 100000))) InVars {main_~x~0=v_main_~x~0_6} OutVars{main_~x~0=v_main_~x~0_6} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,656 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,657 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= |v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~condInParam_1| (ite (= (select v_main_~src~0_6 v_main_~x~0_10) (select v_main_~dst~0_5 v_main_~x~0_10)) 1 0)) InVars {main_~src~0=v_main_~src~0_6, main_~x~0=v_main_~x~0_10, main_~dst~0=v_main_~dst~0_5} OutVars{__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond=|v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond] [2018-03-28 14:34:10,657 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= |v_main_#t~post0_1| v_main_~x~0_8) InVars {main_~x~0=v_main_~x~0_8} OutVars{main_#t~post0=|v_main_#t~post0_1|, main_~x~0=v_main_~x~0_8} AuxVars[] AssignedVars[main_#t~post0] [2018-03-28 14:34:10,658 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond_1 |v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond_1|) InVars {__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond=|v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond_1|} OutVars{__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond=|v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond_1|, __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond=v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond] [2018-03-28 14:34:10,658 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= v_main_~x~0_9 (+ |v_main_#t~post0_2| 1)) InVars {main_#t~post0=|v_main_#t~post0_2|} OutVars{main_~x~0=v_main_~x~0_9, main_#t~post0=|v_main_#t~post0_2|} AuxVars[] AssignedVars[main_~x~0] [2018-03-28 14:34:10,658 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= 0 v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond_2) InVars {__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond=v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond_2} OutVars{__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond=v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,659 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (not (= 0 v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond_3)) InVars {__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond=v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond_3} OutVars{__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond=v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,659 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{main_#t~post0=|v_main_#t~post0_3|} AuxVars[] AssignedVars[main_#t~post0] [2018-03-28 14:34:10,659 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,660 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,661 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,661 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,661 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= |v_ULTIMATE.start_#t~ret1_2| |v_main_#resOutParam_1|) InVars {main_#res=|v_main_#resOutParam_1|} OutVars{ULTIMATE.start_#t~ret1=|v_ULTIMATE.start_#t~ret1_2|} AuxVars[] AssignedVars[ULTIMATE.start_#t~ret1] [2018-03-28 14:34:10,662 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,662 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-03-28 14:34:10,662 DEBUG L87 nsformulaTransformer]: Performing identity transformation for Formula: (= |v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~condInParam_1| (ite (= (select v_main_~src~0_6 v_main_~x~0_10) (select v_main_~dst~0_5 v_main_~x~0_10)) 1 0)) InVars {main_~src~0=v_main_~src~0_6, main_~x~0=v_main_~x~0_10, main_~dst~0=v_main_~dst~0_5} OutVars{__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond=|v___U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert_#in~cond] [2018-03-28 14:34:10,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 28.03 02:34:10 BasicIcfg [2018-03-28 14:34:10,663 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-03-28 14:34:10,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-03-28 14:34:10,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-03-28 14:34:10,667 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-03-28 14:34:10,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.03 02:34:10" (1/4) ... [2018-03-28 14:34:10,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8b0de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 02:34:10, skipping insertion in model container [2018-03-28 14:34:10,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 02:34:10" (2/4) ... [2018-03-28 14:34:10,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8b0de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 02:34:10, skipping insertion in model container [2018-03-28 14:34:10,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 02:34:10" (3/4) ... [2018-03-28 14:34:10,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8b0de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 02:34:10, skipping insertion in model container [2018-03-28 14:34:10,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 28.03 02:34:10" (4/4) ... [2018-03-28 14:34:10,671 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_strcpy_false-valid-deref_ground.ileft_unchanged_by_heapseparator [2018-03-28 14:34:10,678 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-03-28 14:34:10,685 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-03-28 14:34:10,722 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-03-28 14:34:10,723 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-03-28 14:34:10,723 INFO L370 AbstractCegarLoop]: Hoare is true [2018-03-28 14:34:10,723 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-03-28 14:34:10,723 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-03-28 14:34:10,723 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-03-28 14:34:10,724 INFO L374 AbstractCegarLoop]: Difference is false [2018-03-28 14:34:10,724 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-03-28 14:34:10,724 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-03-28 14:34:10,724 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-03-28 14:34:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-03-28 14:34:10,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-03-28 14:34:10,741 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:10,742 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:10,742 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:10,746 INFO L82 PathProgramCache]: Analyzing trace with hash 167026923, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:10,757 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:10,779 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:10,803 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:10,859 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 14:34:10,859 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-03-28 14:34:10,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-28 14:34:10,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-28 14:34:10,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-28 14:34:10,879 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2018-03-28 14:34:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:10,989 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2018-03-28 14:34:10,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-03-28 14:34:10,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-03-28 14:34:10,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:10,998 INFO L225 Difference]: With dead ends: 108 [2018-03-28 14:34:10,998 INFO L226 Difference]: Without dead ends: 71 [2018-03-28 14:34:11,001 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-28 14:34:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-03-28 14:34:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-03-28 14:34:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-03-28 14:34:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-03-28 14:34:11,042 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 9 [2018-03-28 14:34:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:11,042 INFO L459 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-03-28 14:34:11,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-28 14:34:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-03-28 14:34:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-03-28 14:34:11,043 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:11,043 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:11,043 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:11,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2125002319, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:11,049 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:11,059 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:11,071 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:11,125 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 14:34:11,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-03-28 14:34:11,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-28 14:34:11,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-28 14:34:11,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-28 14:34:11,127 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2018-03-28 14:34:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:11,152 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-03-28 14:34:11,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-03-28 14:34:11,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-03-28 14:34:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:11,154 INFO L225 Difference]: With dead ends: 54 [2018-03-28 14:34:11,155 INFO L226 Difference]: Without dead ends: 52 [2018-03-28 14:34:11,156 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-28 14:34:11,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-03-28 14:34:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-03-28 14:34:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-03-28 14:34:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-03-28 14:34:11,163 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 15 [2018-03-28 14:34:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:11,164 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-03-28 14:34:11,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-28 14:34:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-03-28 14:34:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-03-28 14:34:11,165 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:11,165 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:11,165 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:11,166 INFO L82 PathProgramCache]: Analyzing trace with hash 406766827, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:11,173 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:11,182 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:11,234 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:11,347 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:11,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-03-28 14:34:11,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-28 14:34:11,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-28 14:34:11,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-03-28 14:34:11,348 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2018-03-28 14:34:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:11,575 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2018-03-28 14:34:11,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-03-28 14:34:11,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-03-28 14:34:11,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:11,579 INFO L225 Difference]: With dead ends: 178 [2018-03-28 14:34:11,579 INFO L226 Difference]: Without dead ends: 175 [2018-03-28 14:34:11,580 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-03-28 14:34:11,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-03-28 14:34:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 77. [2018-03-28 14:34:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-03-28 14:34:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2018-03-28 14:34:11,594 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 23 [2018-03-28 14:34:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:11,595 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2018-03-28 14:34:11,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-28 14:34:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2018-03-28 14:34:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-03-28 14:34:11,596 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:11,597 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:11,597 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:11,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1469768630, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:11,604 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:11,614 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-03-28 14:34:11,634 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-03-28 14:34:11,712 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-28 14:34:11,713 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-03-28 14:34:11,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-28 14:34:11,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-28 14:34:11,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-03-28 14:34:11,714 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 5 states. [2018-03-28 14:34:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:11,791 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2018-03-28 14:34:11,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-03-28 14:34:11,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-03-28 14:34:11,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:11,793 INFO L225 Difference]: With dead ends: 97 [2018-03-28 14:34:11,794 INFO L226 Difference]: Without dead ends: 77 [2018-03-28 14:34:11,794 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-03-28 14:34:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-03-28 14:34:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-03-28 14:34:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-03-28 14:34:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-03-28 14:34:11,804 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 27 [2018-03-28 14:34:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:11,804 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-03-28 14:34:11,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-28 14:34:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-03-28 14:34:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-03-28 14:34:11,806 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:11,806 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:11,806 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:11,806 INFO L82 PathProgramCache]: Analyzing trace with hash 333723178, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:11,816 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:11,830 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:11,887 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:11,989 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:11,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-03-28 14:34:11,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-03-28 14:34:11,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-03-28 14:34:11,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-03-28 14:34:11,991 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 10 states. [2018-03-28 14:34:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:12,107 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2018-03-28 14:34:12,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-03-28 14:34:12,107 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-03-28 14:34:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:12,108 INFO L225 Difference]: With dead ends: 103 [2018-03-28 14:34:12,109 INFO L226 Difference]: Without dead ends: 77 [2018-03-28 14:34:12,109 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-03-28 14:34:12,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-03-28 14:34:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-03-28 14:34:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-03-28 14:34:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-03-28 14:34:12,117 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 34 [2018-03-28 14:34:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:12,117 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-03-28 14:34:12,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-03-28 14:34:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-03-28 14:34:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-03-28 14:34:12,119 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:12,119 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:12,119 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:12,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1844330570, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:12,125 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:12,136 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 14:34:12,150 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 14:34:12,211 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:12,211 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-03-28 14:34:12,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-28 14:34:12,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-28 14:34:12,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-03-28 14:34:12,213 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 8 states. [2018-03-28 14:34:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:12,303 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2018-03-28 14:34:12,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-28 14:34:12,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-03-28 14:34:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:12,304 INFO L225 Difference]: With dead ends: 98 [2018-03-28 14:34:12,305 INFO L226 Difference]: Without dead ends: 96 [2018-03-28 14:34:12,305 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-03-28 14:34:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-03-28 14:34:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2018-03-28 14:34:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-03-28 14:34:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2018-03-28 14:34:12,316 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2018-03-28 14:34:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:12,316 INFO L459 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2018-03-28 14:34:12,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-28 14:34:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2018-03-28 14:34:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-03-28 14:34:12,319 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:12,319 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:12,320 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1889137429, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:12,327 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:12,340 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:12,390 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:12,519 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:12,519 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-03-28 14:34:12,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-28 14:34:12,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-28 14:34:12,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-03-28 14:34:12,520 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 16 states. [2018-03-28 14:34:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:12,928 INFO L93 Difference]: Finished difference Result 538 states and 610 transitions. [2018-03-28 14:34:12,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-03-28 14:34:12,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2018-03-28 14:34:12,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:12,931 INFO L225 Difference]: With dead ends: 538 [2018-03-28 14:34:12,931 INFO L226 Difference]: Without dead ends: 535 [2018-03-28 14:34:12,932 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2018-03-28 14:34:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-03-28 14:34:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 149. [2018-03-28 14:34:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-03-28 14:34:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2018-03-28 14:34:12,957 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 51 [2018-03-28 14:34:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:12,958 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2018-03-28 14:34:12,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-28 14:34:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2018-03-28 14:34:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-03-28 14:34:12,960 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:12,960 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:12,961 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash -169194244, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:12,974 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:12,993 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-03-28 14:34:13,073 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-28 14:34:13,145 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:13,146 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-03-28 14:34:13,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-03-28 14:34:13,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-03-28 14:34:13,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-03-28 14:34:13,147 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 15 states. [2018-03-28 14:34:13,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:13,254 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2018-03-28 14:34:13,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-03-28 14:34:13,254 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2018-03-28 14:34:13,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:13,256 INFO L225 Difference]: With dead ends: 185 [2018-03-28 14:34:13,256 INFO L226 Difference]: Without dead ends: 149 [2018-03-28 14:34:13,257 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-03-28 14:34:13,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-03-28 14:34:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-03-28 14:34:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-03-28 14:34:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2018-03-28 14:34:13,270 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 65 [2018-03-28 14:34:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:13,271 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2018-03-28 14:34:13,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-03-28 14:34:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2018-03-28 14:34:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-03-28 14:34:13,273 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:13,273 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:13,273 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:13,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1020854564, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:13,287 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:13,305 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-03-28 14:34:13,421 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-03-28 14:34:13,571 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:13,571 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2018-03-28 14:34:13,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-03-28 14:34:13,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-03-28 14:34:13,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-03-28 14:34:13,572 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 20 states. [2018-03-28 14:34:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:13,723 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2018-03-28 14:34:13,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-03-28 14:34:13,724 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 72 [2018-03-28 14:34:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:13,725 INFO L225 Difference]: With dead ends: 191 [2018-03-28 14:34:13,725 INFO L226 Difference]: Without dead ends: 149 [2018-03-28 14:34:13,726 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2018-03-28 14:34:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-03-28 14:34:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-03-28 14:34:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-03-28 14:34:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2018-03-28 14:34:13,735 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 72 [2018-03-28 14:34:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:13,735 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2018-03-28 14:34:13,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-03-28 14:34:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2018-03-28 14:34:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-03-28 14:34:13,737 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:13,737 INFO L355 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:13,737 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:13,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1870164220, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:13,749 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:13,769 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-03-28 14:34:13,827 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-03-28 14:34:13,945 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:13,945 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-03-28 14:34:13,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-28 14:34:13,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-28 14:34:13,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-03-28 14:34:13,946 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 16 states. [2018-03-28 14:34:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:14,186 INFO L93 Difference]: Finished difference Result 186 states and 210 transitions. [2018-03-28 14:34:14,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-03-28 14:34:14,187 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2018-03-28 14:34:14,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:14,188 INFO L225 Difference]: With dead ends: 186 [2018-03-28 14:34:14,188 INFO L226 Difference]: Without dead ends: 184 [2018-03-28 14:34:14,189 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-03-28 14:34:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-03-28 14:34:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2018-03-28 14:34:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-03-28 14:34:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2018-03-28 14:34:14,197 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 79 [2018-03-28 14:34:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:14,198 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2018-03-28 14:34:14,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-28 14:34:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2018-03-28 14:34:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-03-28 14:34:14,200 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:14,200 INFO L355 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:14,200 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:14,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1191222507, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:14,208 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:14,226 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:14,352 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:14,858 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:14,859 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-03-28 14:34:14,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-03-28 14:34:14,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-03-28 14:34:14,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2018-03-28 14:34:14,860 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 32 states. [2018-03-28 14:34:16,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:16,188 INFO L93 Difference]: Finished difference Result 1962 states and 2222 transitions. [2018-03-28 14:34:16,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-03-28 14:34:16,189 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 107 [2018-03-28 14:34:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:16,201 INFO L225 Difference]: With dead ends: 1962 [2018-03-28 14:34:16,201 INFO L226 Difference]: Without dead ends: 1959 [2018-03-28 14:34:16,203 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2018-03-28 14:34:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2018-03-28 14:34:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 293. [2018-03-28 14:34:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-28 14:34:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 326 transitions. [2018-03-28 14:34:16,258 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 326 transitions. Word has length 107 [2018-03-28 14:34:16,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:16,259 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 326 transitions. [2018-03-28 14:34:16,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-03-28 14:34:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 326 transitions. [2018-03-28 14:34:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-03-28 14:34:16,261 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:16,261 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:16,261 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:16,262 INFO L82 PathProgramCache]: Analyzing trace with hash -147904416, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:16,270 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:16,293 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 210 proven. 54 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-03-28 14:34:16,489 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 162 proven. 54 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-03-28 14:34:16,677 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:16,677 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2018-03-28 14:34:16,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-03-28 14:34:16,678 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-03-28 14:34:16,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-03-28 14:34:16,678 INFO L87 Difference]: Start difference. First operand 293 states and 326 transitions. Second operand 25 states. [2018-03-28 14:34:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:16,920 INFO L93 Difference]: Finished difference Result 361 states and 400 transitions. [2018-03-28 14:34:16,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-03-28 14:34:16,920 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 127 [2018-03-28 14:34:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:16,922 INFO L225 Difference]: With dead ends: 361 [2018-03-28 14:34:16,922 INFO L226 Difference]: Without dead ends: 293 [2018-03-28 14:34:16,923 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 225 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2018-03-28 14:34:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-03-28 14:34:16,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-03-28 14:34:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-28 14:34:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 325 transitions. [2018-03-28 14:34:16,949 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 325 transitions. Word has length 127 [2018-03-28 14:34:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:16,949 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 325 transitions. [2018-03-28 14:34:16,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-03-28 14:34:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 325 transitions. [2018-03-28 14:34:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-03-28 14:34:16,951 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:16,951 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:16,951 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:16,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1534054976, now seen corresponding path program 7 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:16,961 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:16,985 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 219 proven. 85 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-03-28 14:34:17,159 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 179 proven. 85 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-03-28 14:34:17,314 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:17,314 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2018-03-28 14:34:17,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-03-28 14:34:17,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-03-28 14:34:17,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2018-03-28 14:34:17,315 INFO L87 Difference]: Start difference. First operand 293 states and 325 transitions. Second operand 30 states. [2018-03-28 14:34:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:17,559 INFO L93 Difference]: Finished difference Result 361 states and 399 transitions. [2018-03-28 14:34:17,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-03-28 14:34:17,559 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2018-03-28 14:34:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:17,561 INFO L225 Difference]: With dead ends: 361 [2018-03-28 14:34:17,561 INFO L226 Difference]: Without dead ends: 293 [2018-03-28 14:34:17,563 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 233 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2018-03-28 14:34:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-03-28 14:34:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-03-28 14:34:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-28 14:34:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 324 transitions. [2018-03-28 14:34:17,587 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 324 transitions. Word has length 134 [2018-03-28 14:34:17,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:17,588 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 324 transitions. [2018-03-28 14:34:17,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-03-28 14:34:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 324 transitions. [2018-03-28 14:34:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-03-28 14:34:17,589 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:17,590 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:17,590 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:17,590 INFO L82 PathProgramCache]: Analyzing trace with hash 987122784, now seen corresponding path program 8 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:17,599 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:17,624 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 212 proven. 123 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-03-28 14:34:17,919 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 188 proven. 123 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-03-28 14:34:18,167 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:18,167 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 35 [2018-03-28 14:34:18,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-03-28 14:34:18,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-03-28 14:34:18,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2018-03-28 14:34:18,168 INFO L87 Difference]: Start difference. First operand 293 states and 324 transitions. Second operand 35 states. [2018-03-28 14:34:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:18,705 INFO L93 Difference]: Finished difference Result 361 states and 398 transitions. [2018-03-28 14:34:18,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-03-28 14:34:18,705 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 141 [2018-03-28 14:34:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:18,707 INFO L225 Difference]: With dead ends: 361 [2018-03-28 14:34:18,707 INFO L226 Difference]: Without dead ends: 293 [2018-03-28 14:34:18,708 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2018-03-28 14:34:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-03-28 14:34:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-03-28 14:34:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-28 14:34:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 323 transitions. [2018-03-28 14:34:18,722 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 323 transitions. Word has length 141 [2018-03-28 14:34:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:18,722 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 323 transitions. [2018-03-28 14:34:18,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-03-28 14:34:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 323 transitions. [2018-03-28 14:34:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-03-28 14:34:18,723 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:18,723 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:18,723 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:18,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1472713152, now seen corresponding path program 9 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:18,737 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:18,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-03-28 14:34:18,998 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-03-28 14:34:19,246 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:19,246 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 40 [2018-03-28 14:34:19,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-03-28 14:34:19,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-03-28 14:34:19,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2018-03-28 14:34:19,247 INFO L87 Difference]: Start difference. First operand 293 states and 323 transitions. Second operand 40 states. [2018-03-28 14:34:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:19,542 INFO L93 Difference]: Finished difference Result 367 states and 404 transitions. [2018-03-28 14:34:19,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-03-28 14:34:19,543 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 148 [2018-03-28 14:34:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:19,544 INFO L225 Difference]: With dead ends: 367 [2018-03-28 14:34:19,544 INFO L226 Difference]: Without dead ends: 293 [2018-03-28 14:34:19,546 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 249 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2018-03-28 14:34:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-03-28 14:34:19,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-03-28 14:34:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-28 14:34:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 322 transitions. [2018-03-28 14:34:19,567 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 322 transitions. Word has length 148 [2018-03-28 14:34:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:19,568 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 322 transitions. [2018-03-28 14:34:19,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-03-28 14:34:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 322 transitions. [2018-03-28 14:34:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-03-28 14:34:19,570 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:19,570 INFO L355 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:19,570 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:19,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1764651104, now seen corresponding path program 10 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:19,579 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:19,611 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-03-28 14:34:19,711 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-03-28 14:34:20,031 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:20,032 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-03-28 14:34:20,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-03-28 14:34:20,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-03-28 14:34:20,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-03-28 14:34:20,033 INFO L87 Difference]: Start difference. First operand 293 states and 322 transitions. Second operand 32 states. [2018-03-28 14:34:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:21,255 INFO L93 Difference]: Finished difference Result 362 states and 414 transitions. [2018-03-28 14:34:21,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-03-28 14:34:21,256 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 155 [2018-03-28 14:34:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:21,257 INFO L225 Difference]: With dead ends: 362 [2018-03-28 14:34:21,257 INFO L226 Difference]: Without dead ends: 360 [2018-03-28 14:34:21,258 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-03-28 14:34:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-03-28 14:34:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 357. [2018-03-28 14:34:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-03-28 14:34:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2018-03-28 14:34:21,272 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 155 [2018-03-28 14:34:21,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:21,273 INFO L459 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2018-03-28 14:34:21,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-03-28 14:34:21,273 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2018-03-28 14:34:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-03-28 14:34:21,275 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:21,275 INFO L355 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:21,275 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1399176427, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:21,285 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:21,312 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:21,812 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:22,817 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:22,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-03-28 14:34:22,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-03-28 14:34:22,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-03-28 14:34:22,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2018-03-28 14:34:22,819 INFO L87 Difference]: Start difference. First operand 357 states and 394 transitions. Second operand 64 states. [2018-03-28 14:34:28,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:28,378 INFO L93 Difference]: Finished difference Result 7498 states and 8470 transitions. [2018-03-28 14:34:28,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-03-28 14:34:28,378 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 219 [2018-03-28 14:34:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:28,412 INFO L225 Difference]: With dead ends: 7498 [2018-03-28 14:34:28,412 INFO L226 Difference]: Without dead ends: 7495 [2018-03-28 14:34:28,417 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2018-03-28 14:34:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2018-03-28 14:34:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 581. [2018-03-28 14:34:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 650 transitions. [2018-03-28 14:34:28,607 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 650 transitions. Word has length 219 [2018-03-28 14:34:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:28,608 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 650 transitions. [2018-03-28 14:34:28,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-03-28 14:34:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 650 transitions. [2018-03-28 14:34:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-03-28 14:34:28,610 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:28,611 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:28,611 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:28,611 INFO L82 PathProgramCache]: Analyzing trace with hash 130963240, now seen corresponding path program 11 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:28,620 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:28,669 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 934 proven. 220 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-03-28 14:34:29,080 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 710 proven. 220 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-03-28 14:34:29,397 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:29,397 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 45 [2018-03-28 14:34:29,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-03-28 14:34:29,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-03-28 14:34:29,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1631, Unknown=0, NotChecked=0, Total=1980 [2018-03-28 14:34:29,398 INFO L87 Difference]: Start difference. First operand 581 states and 650 transitions. Second operand 45 states. [2018-03-28 14:34:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:29,811 INFO L93 Difference]: Finished difference Result 713 states and 796 transitions. [2018-03-28 14:34:29,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-03-28 14:34:29,811 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 251 [2018-03-28 14:34:29,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:29,813 INFO L225 Difference]: With dead ends: 713 [2018-03-28 14:34:29,814 INFO L226 Difference]: Without dead ends: 581 [2018-03-28 14:34:29,815 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 449 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=821, Invalid=2839, Unknown=0, NotChecked=0, Total=3660 [2018-03-28 14:34:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-28 14:34:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-28 14:34:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 649 transitions. [2018-03-28 14:34:29,856 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 649 transitions. Word has length 251 [2018-03-28 14:34:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:29,857 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 649 transitions. [2018-03-28 14:34:29,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-03-28 14:34:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 649 transitions. [2018-03-28 14:34:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-03-28 14:34:29,858 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:29,859 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:29,859 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:29,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1211166984, now seen corresponding path program 12 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:29,865 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:29,906 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 975 proven. 279 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-03-28 14:34:30,343 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 759 proven. 279 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-03-28 14:34:30,713 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:30,713 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 50 [2018-03-28 14:34:30,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-03-28 14:34:30,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-03-28 14:34:30,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2018-03-28 14:34:30,715 INFO L87 Difference]: Start difference. First operand 581 states and 649 transitions. Second operand 50 states. [2018-03-28 14:34:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:31,181 INFO L93 Difference]: Finished difference Result 713 states and 795 transitions. [2018-03-28 14:34:31,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-03-28 14:34:31,182 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 258 [2018-03-28 14:34:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:31,184 INFO L225 Difference]: With dead ends: 713 [2018-03-28 14:34:31,184 INFO L226 Difference]: Without dead ends: 581 [2018-03-28 14:34:31,185 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 457 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1008, Invalid=3548, Unknown=0, NotChecked=0, Total=4556 [2018-03-28 14:34:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-28 14:34:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-28 14:34:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 648 transitions. [2018-03-28 14:34:31,252 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 648 transitions. Word has length 258 [2018-03-28 14:34:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:31,253 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 648 transitions. [2018-03-28 14:34:31,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-03-28 14:34:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 648 transitions. [2018-03-28 14:34:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-03-28 14:34:31,255 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:31,255 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:31,255 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:31,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1368949976, now seen corresponding path program 13 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:31,267 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:31,316 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 1000 proven. 345 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-03-28 14:34:31,805 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 800 proven. 345 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-03-28 14:34:32,246 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:32,246 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 55 [2018-03-28 14:34:32,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-03-28 14:34:32,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-03-28 14:34:32,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2466, Unknown=0, NotChecked=0, Total=2970 [2018-03-28 14:34:32,248 INFO L87 Difference]: Start difference. First operand 581 states and 648 transitions. Second operand 55 states. [2018-03-28 14:34:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:32,880 INFO L93 Difference]: Finished difference Result 713 states and 794 transitions. [2018-03-28 14:34:32,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-03-28 14:34:32,881 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 265 [2018-03-28 14:34:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:32,883 INFO L225 Difference]: With dead ends: 713 [2018-03-28 14:34:32,883 INFO L226 Difference]: Without dead ends: 581 [2018-03-28 14:34:32,884 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 465 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1214, Invalid=4336, Unknown=0, NotChecked=0, Total=5550 [2018-03-28 14:34:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-28 14:34:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-28 14:34:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 647 transitions. [2018-03-28 14:34:32,959 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 647 transitions. Word has length 265 [2018-03-28 14:34:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:32,960 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 647 transitions. [2018-03-28 14:34:32,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-03-28 14:34:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 647 transitions. [2018-03-28 14:34:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-03-28 14:34:32,962 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:32,962 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:32,962 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:32,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1573342472, now seen corresponding path program 14 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:32,970 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:33,009 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 1009 proven. 418 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2018-03-28 14:34:33,387 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 833 proven. 418 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-03-28 14:34:33,881 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:33,881 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 60 [2018-03-28 14:34:33,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-03-28 14:34:33,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-03-28 14:34:33,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=2948, Unknown=0, NotChecked=0, Total=3540 [2018-03-28 14:34:33,883 INFO L87 Difference]: Start difference. First operand 581 states and 647 transitions. Second operand 60 states. [2018-03-28 14:34:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:34,590 INFO L93 Difference]: Finished difference Result 713 states and 793 transitions. [2018-03-28 14:34:34,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-03-28 14:34:34,590 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 272 [2018-03-28 14:34:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:34,592 INFO L225 Difference]: With dead ends: 713 [2018-03-28 14:34:34,592 INFO L226 Difference]: Without dead ends: 581 [2018-03-28 14:34:34,593 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 473 SyntacticMatches, 12 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1439, Invalid=5203, Unknown=0, NotChecked=0, Total=6642 [2018-03-28 14:34:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-28 14:34:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-28 14:34:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 646 transitions. [2018-03-28 14:34:34,660 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 646 transitions. Word has length 272 [2018-03-28 14:34:34,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:34,661 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 646 transitions. [2018-03-28 14:34:34,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-03-28 14:34:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 646 transitions. [2018-03-28 14:34:34,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-03-28 14:34:34,663 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:34,664 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:34,664 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:34,664 INFO L82 PathProgramCache]: Analyzing trace with hash 808558376, now seen corresponding path program 15 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:34,673 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:34,727 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 1002 proven. 498 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-03-28 14:34:35,171 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 858 proven. 498 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-03-28 14:34:35,868 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:35,868 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 65 [2018-03-28 14:34:35,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-03-28 14:34:35,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-03-28 14:34:35,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=3473, Unknown=0, NotChecked=0, Total=4160 [2018-03-28 14:34:35,870 INFO L87 Difference]: Start difference. First operand 581 states and 646 transitions. Second operand 65 states. [2018-03-28 14:34:37,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:37,095 INFO L93 Difference]: Finished difference Result 713 states and 792 transitions. [2018-03-28 14:34:37,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-03-28 14:34:37,095 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 279 [2018-03-28 14:34:37,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:37,098 INFO L225 Difference]: With dead ends: 713 [2018-03-28 14:34:37,098 INFO L226 Difference]: Without dead ends: 581 [2018-03-28 14:34:37,099 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 481 SyntacticMatches, 13 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1683, Invalid=6149, Unknown=0, NotChecked=0, Total=7832 [2018-03-28 14:34:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-28 14:34:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-28 14:34:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 645 transitions. [2018-03-28 14:34:37,138 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 645 transitions. Word has length 279 [2018-03-28 14:34:37,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:37,138 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 645 transitions. [2018-03-28 14:34:37,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-03-28 14:34:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 645 transitions. [2018-03-28 14:34:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-03-28 14:34:37,140 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:37,140 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:37,140 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash -821253880, now seen corresponding path program 16 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:37,146 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:37,182 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 979 proven. 585 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-03-28 14:34:37,673 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 875 proven. 585 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-03-28 14:34:38,314 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:38,314 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 70 [2018-03-28 14:34:38,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-03-28 14:34:38,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-03-28 14:34:38,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=4041, Unknown=0, NotChecked=0, Total=4830 [2018-03-28 14:34:38,316 INFO L87 Difference]: Start difference. First operand 581 states and 645 transitions. Second operand 70 states. [2018-03-28 14:34:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:39,149 INFO L93 Difference]: Finished difference Result 713 states and 791 transitions. [2018-03-28 14:34:39,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-03-28 14:34:39,149 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 286 [2018-03-28 14:34:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:39,151 INFO L225 Difference]: With dead ends: 713 [2018-03-28 14:34:39,151 INFO L226 Difference]: Without dead ends: 581 [2018-03-28 14:34:39,152 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 489 SyntacticMatches, 14 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1946, Invalid=7174, Unknown=0, NotChecked=0, Total=9120 [2018-03-28 14:34:39,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-28 14:34:39,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-28 14:34:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 644 transitions. [2018-03-28 14:34:39,208 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 644 transitions. Word has length 286 [2018-03-28 14:34:39,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:39,208 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 644 transitions. [2018-03-28 14:34:39,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-03-28 14:34:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 644 transitions. [2018-03-28 14:34:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-03-28 14:34:39,211 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:39,211 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:39,211 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:39,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1553153240, now seen corresponding path program 17 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:39,221 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:39,274 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 940 proven. 679 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-03-28 14:34:39,924 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 884 proven. 679 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-03-28 14:34:40,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:40,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 75 [2018-03-28 14:34:40,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-03-28 14:34:40,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-03-28 14:34:40,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=898, Invalid=4652, Unknown=0, NotChecked=0, Total=5550 [2018-03-28 14:34:40,659 INFO L87 Difference]: Start difference. First operand 581 states and 644 transitions. Second operand 75 states. [2018-03-28 14:34:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:41,522 INFO L93 Difference]: Finished difference Result 713 states and 790 transitions. [2018-03-28 14:34:41,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-03-28 14:34:41,522 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 293 [2018-03-28 14:34:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:41,524 INFO L225 Difference]: With dead ends: 713 [2018-03-28 14:34:41,524 INFO L226 Difference]: Without dead ends: 581 [2018-03-28 14:34:41,526 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 497 SyntacticMatches, 15 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2228, Invalid=8278, Unknown=0, NotChecked=0, Total=10506 [2018-03-28 14:34:41,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-28 14:34:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-28 14:34:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 643 transitions. [2018-03-28 14:34:41,563 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 643 transitions. Word has length 293 [2018-03-28 14:34:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:41,563 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 643 transitions. [2018-03-28 14:34:41,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-03-28 14:34:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 643 transitions. [2018-03-28 14:34:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-03-28 14:34:41,566 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:41,566 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:41,566 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:41,566 INFO L82 PathProgramCache]: Analyzing trace with hash -37681912, now seen corresponding path program 18 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:41,573 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:41,618 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-03-28 14:34:42,281 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-03-28 14:34:43,082 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:43,082 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 80 [2018-03-28 14:34:43,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-03-28 14:34:43,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-03-28 14:34:43,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=5306, Unknown=0, NotChecked=0, Total=6320 [2018-03-28 14:34:43,083 INFO L87 Difference]: Start difference. First operand 581 states and 643 transitions. Second operand 80 states. [2018-03-28 14:34:44,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:44,079 INFO L93 Difference]: Finished difference Result 719 states and 796 transitions. [2018-03-28 14:34:44,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-03-28 14:34:44,079 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 300 [2018-03-28 14:34:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:44,081 INFO L225 Difference]: With dead ends: 719 [2018-03-28 14:34:44,081 INFO L226 Difference]: Without dead ends: 581 [2018-03-28 14:34:44,083 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 505 SyntacticMatches, 16 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2529, Invalid=9461, Unknown=0, NotChecked=0, Total=11990 [2018-03-28 14:34:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-28 14:34:44,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-28 14:34:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-28 14:34:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 642 transitions. [2018-03-28 14:34:44,121 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 642 transitions. Word has length 300 [2018-03-28 14:34:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:44,121 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 642 transitions. [2018-03-28 14:34:44,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-03-28 14:34:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 642 transitions. [2018-03-28 14:34:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-03-28 14:34:44,123 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:44,123 INFO L355 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:44,123 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:44,123 INFO L82 PathProgramCache]: Analyzing trace with hash 777578280, now seen corresponding path program 19 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:44,131 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:44,173 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-03-28 14:34:44,510 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-03-28 14:34:45,481 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:45,482 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-03-28 14:34:45,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-03-28 14:34:45,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-03-28 14:34:45,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-03-28 14:34:45,483 INFO L87 Difference]: Start difference. First operand 581 states and 642 transitions. Second operand 64 states. [2018-03-28 14:34:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:34:49,976 INFO L93 Difference]: Finished difference Result 714 states and 822 transitions. [2018-03-28 14:34:49,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-03-28 14:34:49,976 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 307 [2018-03-28 14:34:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:34:49,978 INFO L225 Difference]: With dead ends: 714 [2018-03-28 14:34:49,978 INFO L226 Difference]: Without dead ends: 712 [2018-03-28 14:34:49,979 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-03-28 14:34:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2018-03-28 14:34:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 709. [2018-03-28 14:34:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2018-03-28 14:34:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 786 transitions. [2018-03-28 14:34:50,020 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 786 transitions. Word has length 307 [2018-03-28 14:34:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:34:50,020 INFO L459 AbstractCegarLoop]: Abstraction has 709 states and 786 transitions. [2018-03-28 14:34:50,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-03-28 14:34:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 786 transitions. [2018-03-28 14:34:50,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-03-28 14:34:50,023 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:34:50,023 INFO L355 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:34:50,023 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:34:50,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1594884885, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:34:50,030 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:34:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:34:50,076 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:34:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:51,318 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:34:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-28 14:34:55,054 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:34:55,069 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-03-28 14:34:55,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-03-28 14:34:55,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-03-28 14:34:55,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2018-03-28 14:34:55,071 INFO L87 Difference]: Start difference. First operand 709 states and 786 transitions. Second operand 128 states. [2018-03-28 14:35:00,496 WARN L151 SmtUtils]: Spent 243ms on a formula simplification. DAG size of input: 316 DAG size of output 6 [2018-03-28 14:35:00,957 WARN L151 SmtUtils]: Spent 235ms on a formula simplification. DAG size of input: 311 DAG size of output 6 [2018-03-28 14:35:01,416 WARN L151 SmtUtils]: Spent 231ms on a formula simplification. DAG size of input: 306 DAG size of output 6 [2018-03-28 14:35:01,898 WARN L151 SmtUtils]: Spent 250ms on a formula simplification. DAG size of input: 301 DAG size of output 6 [2018-03-28 14:35:02,356 WARN L151 SmtUtils]: Spent 219ms on a formula simplification. DAG size of input: 296 DAG size of output 6 [2018-03-28 14:35:02,820 WARN L151 SmtUtils]: Spent 217ms on a formula simplification. DAG size of input: 291 DAG size of output 6 [2018-03-28 14:35:03,272 WARN L151 SmtUtils]: Spent 210ms on a formula simplification. DAG size of input: 286 DAG size of output 6 [2018-03-28 14:35:03,703 WARN L151 SmtUtils]: Spent 197ms on a formula simplification. DAG size of input: 281 DAG size of output 6 [2018-03-28 14:35:04,136 WARN L151 SmtUtils]: Spent 192ms on a formula simplification. DAG size of input: 276 DAG size of output 6 [2018-03-28 14:35:04,567 WARN L151 SmtUtils]: Spent 190ms on a formula simplification. DAG size of input: 271 DAG size of output 6 [2018-03-28 14:35:05,001 WARN L151 SmtUtils]: Spent 190ms on a formula simplification. DAG size of input: 266 DAG size of output 6 [2018-03-28 14:35:05,428 WARN L151 SmtUtils]: Spent 177ms on a formula simplification. DAG size of input: 261 DAG size of output 6 [2018-03-28 14:35:05,848 WARN L151 SmtUtils]: Spent 179ms on a formula simplification. DAG size of input: 256 DAG size of output 6 [2018-03-28 14:35:06,255 WARN L151 SmtUtils]: Spent 162ms on a formula simplification. DAG size of input: 251 DAG size of output 6 [2018-03-28 14:35:06,682 WARN L151 SmtUtils]: Spent 183ms on a formula simplification. DAG size of input: 246 DAG size of output 6 [2018-03-28 14:35:07,253 WARN L151 SmtUtils]: Spent 175ms on a formula simplification. DAG size of input: 241 DAG size of output 6 [2018-03-28 14:35:07,631 WARN L151 SmtUtils]: Spent 141ms on a formula simplification. DAG size of input: 236 DAG size of output 6 [2018-03-28 14:35:08,001 WARN L151 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 231 DAG size of output 6 [2018-03-28 14:35:08,364 WARN L151 SmtUtils]: Spent 132ms on a formula simplification. DAG size of input: 226 DAG size of output 6 [2018-03-28 14:35:08,735 WARN L151 SmtUtils]: Spent 130ms on a formula simplification. DAG size of input: 221 DAG size of output 6 [2018-03-28 14:35:09,087 WARN L151 SmtUtils]: Spent 122ms on a formula simplification. DAG size of input: 216 DAG size of output 6 [2018-03-28 14:35:09,438 WARN L151 SmtUtils]: Spent 122ms on a formula simplification. DAG size of input: 211 DAG size of output 6 [2018-03-28 14:35:09,779 WARN L151 SmtUtils]: Spent 112ms on a formula simplification. DAG size of input: 206 DAG size of output 6 [2018-03-28 14:35:10,124 WARN L151 SmtUtils]: Spent 118ms on a formula simplification. DAG size of input: 201 DAG size of output 6 [2018-03-28 14:35:10,450 WARN L151 SmtUtils]: Spent 102ms on a formula simplification. DAG size of input: 196 DAG size of output 6 [2018-03-28 14:35:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:35:24,234 INFO L93 Difference]: Finished difference Result 29322 states and 33062 transitions. [2018-03-28 14:35:24,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-03-28 14:35:24,235 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 443 [2018-03-28 14:35:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:35:24,329 INFO L225 Difference]: With dead ends: 29322 [2018-03-28 14:35:24,329 INFO L226 Difference]: Without dead ends: 29319 [2018-03-28 14:35:24,341 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=12158, Invalid=23752, Unknown=0, NotChecked=0, Total=35910 [2018-03-28 14:35:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2018-03-28 14:35:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 1157. [2018-03-28 14:35:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:35:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1298 transitions. [2018-03-28 14:35:24,808 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1298 transitions. Word has length 443 [2018-03-28 14:35:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:35:24,809 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1298 transitions. [2018-03-28 14:35:24,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-03-28 14:35:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1298 transitions. [2018-03-28 14:35:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-03-28 14:35:24,812 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:35:24,812 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:35:24,812 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:35:24,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2049086648, now seen corresponding path program 20 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:35:24,821 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:35:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:35:24,891 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:35:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3918 proven. 888 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2018-03-28 14:35:25,744 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:35:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2958 proven. 888 refuted. 0 times theorem prover too weak. 2715 trivial. 0 not checked. [2018-03-28 14:35:26,748 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:35:26,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 85 [2018-03-28 14:35:26,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-03-28 14:35:26,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-03-28 14:35:26,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=6003, Unknown=0, NotChecked=0, Total=7140 [2018-03-28 14:35:26,749 INFO L87 Difference]: Start difference. First operand 1157 states and 1298 transitions. Second operand 85 states. [2018-03-28 14:35:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:35:27,977 INFO L93 Difference]: Finished difference Result 1417 states and 1588 transitions. [2018-03-28 14:35:27,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-03-28 14:35:27,977 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 499 [2018-03-28 14:35:27,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:35:27,980 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:35:27,980 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:35:27,982 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 897 SyntacticMatches, 17 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3517 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2849, Invalid=10723, Unknown=0, NotChecked=0, Total=13572 [2018-03-28 14:35:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:35:28,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:35:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:35:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1297 transitions. [2018-03-28 14:35:28,164 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1297 transitions. Word has length 499 [2018-03-28 14:35:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:35:28,164 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1297 transitions. [2018-03-28 14:35:28,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-03-28 14:35:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1297 transitions. [2018-03-28 14:35:28,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-03-28 14:35:28,167 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:35:28,167 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:35:28,168 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:35:28,168 INFO L82 PathProgramCache]: Analyzing trace with hash -47116648, now seen corresponding path program 21 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:35:28,175 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:35:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:35:28,272 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:35:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 4023 proven. 1003 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2018-03-28 14:35:29,134 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:35:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 3071 proven. 1003 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2018-03-28 14:35:30,265 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:35:30,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 90 [2018-03-28 14:35:30,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-03-28 14:35:30,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-03-28 14:35:30,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1267, Invalid=6743, Unknown=0, NotChecked=0, Total=8010 [2018-03-28 14:35:30,268 INFO L87 Difference]: Start difference. First operand 1157 states and 1297 transitions. Second operand 90 states. [2018-03-28 14:35:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:35:31,703 INFO L93 Difference]: Finished difference Result 1417 states and 1587 transitions. [2018-03-28 14:35:31,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-03-28 14:35:31,703 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 506 [2018-03-28 14:35:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:35:31,706 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:35:31,706 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:35:31,708 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 905 SyntacticMatches, 18 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3966 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3188, Invalid=12064, Unknown=0, NotChecked=0, Total=15252 [2018-03-28 14:35:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:35:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:35:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:35:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1296 transitions. [2018-03-28 14:35:31,849 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1296 transitions. Word has length 506 [2018-03-28 14:35:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:35:31,850 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1296 transitions. [2018-03-28 14:35:31,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-03-28 14:35:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1296 transitions. [2018-03-28 14:35:31,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-03-28 14:35:31,852 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:35:31,852 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:35:31,853 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:35:31,853 INFO L82 PathProgramCache]: Analyzing trace with hash -509626184, now seen corresponding path program 22 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:35:31,859 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:35:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:35:31,931 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:35:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 4112 proven. 1125 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2018-03-28 14:35:32,923 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:35:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 3176 proven. 1125 refuted. 0 times theorem prover too weak. 2497 trivial. 0 not checked. [2018-03-28 14:35:34,354 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:35:34,354 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 95 [2018-03-28 14:35:34,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-03-28 14:35:34,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-03-28 14:35:34,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=7526, Unknown=0, NotChecked=0, Total=8930 [2018-03-28 14:35:34,355 INFO L87 Difference]: Start difference. First operand 1157 states and 1296 transitions. Second operand 95 states. [2018-03-28 14:35:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:35:35,819 INFO L93 Difference]: Finished difference Result 1417 states and 1586 transitions. [2018-03-28 14:35:35,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-03-28 14:35:35,820 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 513 [2018-03-28 14:35:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:35:35,823 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:35:35,823 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:35:35,826 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 913 SyntacticMatches, 19 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4442 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3546, Invalid=13484, Unknown=0, NotChecked=0, Total=17030 [2018-03-28 14:35:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:35:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:35:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:35:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1295 transitions. [2018-03-28 14:35:36,073 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1295 transitions. Word has length 513 [2018-03-28 14:35:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:35:36,074 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1295 transitions. [2018-03-28 14:35:36,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-03-28 14:35:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1295 transitions. [2018-03-28 14:35:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-03-28 14:35:36,078 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:35:36,078 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:35:36,078 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:35:36,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1231252120, now seen corresponding path program 23 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:35:36,090 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:35:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:35:36,177 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:35:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 4185 proven. 1254 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2018-03-28 14:35:37,601 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:35:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 3273 proven. 1254 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2018-03-28 14:35:38,920 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:35:38,920 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 100 [2018-03-28 14:35:38,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-03-28 14:35:38,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-03-28 14:35:38,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=8352, Unknown=0, NotChecked=0, Total=9900 [2018-03-28 14:35:38,921 INFO L87 Difference]: Start difference. First operand 1157 states and 1295 transitions. Second operand 100 states. [2018-03-28 14:35:40,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:35:40,564 INFO L93 Difference]: Finished difference Result 1417 states and 1585 transitions. [2018-03-28 14:35:40,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-03-28 14:35:40,564 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 520 [2018-03-28 14:35:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:35:40,566 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:35:40,566 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:35:40,568 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 921 SyntacticMatches, 20 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3923, Invalid=14983, Unknown=0, NotChecked=0, Total=18906 [2018-03-28 14:35:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:35:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:35:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:35:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1294 transitions. [2018-03-28 14:35:40,811 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1294 transitions. Word has length 520 [2018-03-28 14:35:40,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:35:40,812 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1294 transitions. [2018-03-28 14:35:40,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-03-28 14:35:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1294 transitions. [2018-03-28 14:35:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-03-28 14:35:40,815 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:35:40,815 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:35:40,815 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:35:40,815 INFO L82 PathProgramCache]: Analyzing trace with hash -984752968, now seen corresponding path program 24 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:35:40,822 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:35:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:35:40,893 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:35:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 4242 proven. 1390 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2018-03-28 14:35:42,211 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:35:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 3362 proven. 1390 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2018-03-28 14:35:43,652 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:35:43,652 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 105 [2018-03-28 14:35:43,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-03-28 14:35:43,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-03-28 14:35:43,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1699, Invalid=9221, Unknown=0, NotChecked=0, Total=10920 [2018-03-28 14:35:43,655 INFO L87 Difference]: Start difference. First operand 1157 states and 1294 transitions. Second operand 105 states. [2018-03-28 14:35:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:35:45,250 INFO L93 Difference]: Finished difference Result 1417 states and 1584 transitions. [2018-03-28 14:35:45,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-03-28 14:35:45,251 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 527 [2018-03-28 14:35:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:35:45,252 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:35:45,252 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:35:45,253 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 929 SyntacticMatches, 21 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5475 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4319, Invalid=16561, Unknown=0, NotChecked=0, Total=20880 [2018-03-28 14:35:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:35:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:35:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:35:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1293 transitions. [2018-03-28 14:35:45,389 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1293 transitions. Word has length 527 [2018-03-28 14:35:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:35:45,389 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1293 transitions. [2018-03-28 14:35:45,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-03-28 14:35:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1293 transitions. [2018-03-28 14:35:45,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-03-28 14:35:45,392 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:35:45,392 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:35:45,392 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:35:45,392 INFO L82 PathProgramCache]: Analyzing trace with hash 809813656, now seen corresponding path program 25 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:35:45,398 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:35:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:35:45,456 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:35:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 4283 proven. 1533 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-03-28 14:35:46,573 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:35:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 3443 proven. 1533 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-03-28 14:35:48,134 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:35:48,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 110 [2018-03-28 14:35:48,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-03-28 14:35:48,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-03-28 14:35:48,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1857, Invalid=10133, Unknown=0, NotChecked=0, Total=11990 [2018-03-28 14:35:48,136 INFO L87 Difference]: Start difference. First operand 1157 states and 1293 transitions. Second operand 110 states. [2018-03-28 14:35:49,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:35:49,873 INFO L93 Difference]: Finished difference Result 1417 states and 1583 transitions. [2018-03-28 14:35:49,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-03-28 14:35:49,873 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 534 [2018-03-28 14:35:49,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:35:49,875 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:35:49,875 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:35:49,876 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 937 SyntacticMatches, 22 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6032 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4734, Invalid=18218, Unknown=0, NotChecked=0, Total=22952 [2018-03-28 14:35:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:35:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:35:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:35:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1292 transitions. [2018-03-28 14:35:50,012 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1292 transitions. Word has length 534 [2018-03-28 14:35:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:35:50,012 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1292 transitions. [2018-03-28 14:35:50,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-03-28 14:35:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1292 transitions. [2018-03-28 14:35:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-03-28 14:35:50,015 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:35:50,015 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:35:50,015 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:35:50,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2070741176, now seen corresponding path program 26 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:35:50,020 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:35:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:35:50,080 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:35:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 4308 proven. 1683 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2018-03-28 14:35:51,307 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:35:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 3516 proven. 1683 refuted. 0 times theorem prover too weak. 2157 trivial. 0 not checked. [2018-03-28 14:35:52,981 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:35:52,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 115 [2018-03-28 14:35:52,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-03-28 14:35:52,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-03-28 14:35:52,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=11088, Unknown=0, NotChecked=0, Total=13110 [2018-03-28 14:35:52,982 INFO L87 Difference]: Start difference. First operand 1157 states and 1292 transitions. Second operand 115 states. [2018-03-28 14:35:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:35:54,913 INFO L93 Difference]: Finished difference Result 1417 states and 1582 transitions. [2018-03-28 14:35:54,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-03-28 14:35:54,913 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 541 [2018-03-28 14:35:54,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:35:54,914 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:35:54,914 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:35:54,916 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 945 SyntacticMatches, 23 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6616 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5168, Invalid=19954, Unknown=0, NotChecked=0, Total=25122 [2018-03-28 14:35:54,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:35:55,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:35:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:35:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1291 transitions. [2018-03-28 14:35:55,052 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1291 transitions. Word has length 541 [2018-03-28 14:35:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:35:55,052 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1291 transitions. [2018-03-28 14:35:55,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-03-28 14:35:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1291 transitions. [2018-03-28 14:35:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-03-28 14:35:55,055 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:35:55,055 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:35:55,055 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:35:55,055 INFO L82 PathProgramCache]: Analyzing trace with hash -745201000, now seen corresponding path program 27 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:35:55,061 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:35:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:35:55,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:35:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 4317 proven. 1840 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2018-03-28 14:35:56,408 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:35:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 3581 proven. 1840 refuted. 0 times theorem prover too weak. 2092 trivial. 0 not checked. [2018-03-28 14:35:58,311 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:35:58,312 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 120 [2018-03-28 14:35:58,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-03-28 14:35:58,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-03-28 14:35:58,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2194, Invalid=12086, Unknown=0, NotChecked=0, Total=14280 [2018-03-28 14:35:58,313 INFO L87 Difference]: Start difference. First operand 1157 states and 1291 transitions. Second operand 120 states. [2018-03-28 14:36:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:36:00,548 INFO L93 Difference]: Finished difference Result 1417 states and 1581 transitions. [2018-03-28 14:36:00,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-03-28 14:36:00,548 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 548 [2018-03-28 14:36:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:36:00,549 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:36:00,549 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:36:00,551 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1141 GetRequests, 953 SyntacticMatches, 24 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7227 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5621, Invalid=21769, Unknown=0, NotChecked=0, Total=27390 [2018-03-28 14:36:00,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:36:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:36:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:36:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1290 transitions. [2018-03-28 14:36:00,685 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1290 transitions. Word has length 548 [2018-03-28 14:36:00,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:36:00,685 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1290 transitions. [2018-03-28 14:36:00,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-03-28 14:36:00,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1290 transitions. [2018-03-28 14:36:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-03-28 14:36:00,688 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:36:00,688 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:36:00,688 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:36:00,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1782391992, now seen corresponding path program 28 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:36:00,694 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:36:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:36:00,755 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:36:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 4310 proven. 2004 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-03-28 14:36:02,142 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:36:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 3638 proven. 2004 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2018-03-28 14:36:04,062 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:36:04,062 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 125 [2018-03-28 14:36:04,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-03-28 14:36:04,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-03-28 14:36:04,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2373, Invalid=13127, Unknown=0, NotChecked=0, Total=15500 [2018-03-28 14:36:04,064 INFO L87 Difference]: Start difference. First operand 1157 states and 1290 transitions. Second operand 125 states. [2018-03-28 14:36:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:36:06,218 INFO L93 Difference]: Finished difference Result 1417 states and 1580 transitions. [2018-03-28 14:36:06,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-03-28 14:36:06,218 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 555 [2018-03-28 14:36:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:36:06,220 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:36:06,220 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:36:06,223 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 961 SyntacticMatches, 25 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7865 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6093, Invalid=23663, Unknown=0, NotChecked=0, Total=29756 [2018-03-28 14:36:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:36:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:36:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:36:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1289 transitions. [2018-03-28 14:36:06,381 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1289 transitions. Word has length 555 [2018-03-28 14:36:06,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:36:06,381 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1289 transitions. [2018-03-28 14:36:06,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-03-28 14:36:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1289 transitions. [2018-03-28 14:36:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-03-28 14:36:06,383 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:36:06,384 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:36:06,384 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:36:06,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1158971032, now seen corresponding path program 29 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:36:06,390 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:36:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:36:06,450 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-28 14:36:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 4287 proven. 2175 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2018-03-28 14:36:07,924 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-28 14:36:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 3687 proven. 2175 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2018-03-28 14:36:10,093 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-28 14:36:10,093 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 130 [2018-03-28 14:36:10,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-03-28 14:36:10,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-03-28 14:36:10,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=14211, Unknown=0, NotChecked=0, Total=16770 [2018-03-28 14:36:10,096 INFO L87 Difference]: Start difference. First operand 1157 states and 1289 transitions. Second operand 130 states. [2018-03-28 14:36:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-28 14:36:12,529 INFO L93 Difference]: Finished difference Result 1417 states and 1579 transitions. [2018-03-28 14:36:12,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-03-28 14:36:12,529 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 562 [2018-03-28 14:36:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-28 14:36:12,530 INFO L225 Difference]: With dead ends: 1417 [2018-03-28 14:36:12,530 INFO L226 Difference]: Without dead ends: 1157 [2018-03-28 14:36:12,532 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 969 SyntacticMatches, 26 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8530 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6584, Invalid=25636, Unknown=0, NotChecked=0, Total=32220 [2018-03-28 14:36:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-28 14:36:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-28 14:36:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-28 14:36:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1288 transitions. [2018-03-28 14:36:12,685 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1288 transitions. Word has length 562 [2018-03-28 14:36:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-28 14:36:12,685 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1288 transitions. [2018-03-28 14:36:12,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-03-28 14:36:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1288 transitions. [2018-03-28 14:36:12,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-03-28 14:36:12,688 INFO L347 BasicCegarLoop]: Found error trace [2018-03-28 14:36:12,688 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-28 14:36:12,688 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-28 14:36:12,688 INFO L82 PathProgramCache]: Analyzing trace with hash 134105272, now seen corresponding path program 30 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-28 14:36:12,694 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-28 14:36:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-28 14:36:12,755 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-03-28 14:36:13,893 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-03-28 14:36:13,894 WARN L519 AbstractCegarLoop]: Verification canceled [2018-03-28 14:36:13,897 WARN L197 ceAbstractionStarter]: Timeout [2018-03-28 14:36:13,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 02:36:13 BasicIcfg [2018-03-28 14:36:13,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-03-28 14:36:13,898 INFO L168 Benchmark]: Toolchain (without parser) took 123751.08 ms. Allocated memory was 306.2 MB in the beginning and 1.3 GB in the end (delta: 978.8 MB). Free memory was 246.3 MB in the beginning and 275.1 MB in the end (delta: -28.9 MB). Peak memory consumption was 950.0 MB. Max. memory is 5.3 GB. [2018-03-28 14:36:13,899 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 306.2 MB. Free memory is still 268.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-03-28 14:36:13,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.53 ms. Allocated memory is still 306.2 MB. Free memory was 246.3 MB in the beginning and 237.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-03-28 14:36:13,900 INFO L168 Benchmark]: Boogie Preprocessor took 23.59 ms. Allocated memory is still 306.2 MB. Free memory was 237.2 MB in the beginning and 235.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-03-28 14:36:13,900 INFO L168 Benchmark]: RCFGBuilder took 255.03 ms. Allocated memory was 306.2 MB in the beginning and 468.7 MB in the end (delta: 162.5 MB). Free memory was 235.2 MB in the beginning and 439.7 MB in the end (delta: -204.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 5.3 GB. [2018-03-28 14:36:13,900 INFO L168 Benchmark]: IcfgTransformer took 34.07 ms. Allocated memory is still 468.7 MB. Free memory was 439.7 MB in the beginning and 434.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 5.3 GB. [2018-03-28 14:36:13,900 INFO L168 Benchmark]: TraceAbstraction took 123233.23 ms. Allocated memory was 468.7 MB in the beginning and 1.3 GB in the end (delta: 816.3 MB). Free memory was 434.7 MB in the beginning and 275.1 MB in the end (delta: 159.6 MB). Peak memory consumption was 975.9 MB. Max. memory is 5.3 GB. [2018-03-28 14:36:13,903 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 306.2 MB. Free memory is still 268.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 198.53 ms. Allocated memory is still 306.2 MB. Free memory was 246.3 MB in the beginning and 237.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.59 ms. Allocated memory is still 306.2 MB. Free memory was 237.2 MB in the beginning and 235.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 255.03 ms. Allocated memory was 306.2 MB in the beginning and 468.7 MB in the end (delta: 162.5 MB). Free memory was 235.2 MB in the beginning and 439.7 MB in the end (delta: -204.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 5.3 GB. * IcfgTransformer took 34.07 ms. Allocated memory is still 468.7 MB. Free memory was 439.7 MB in the beginning and 434.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 123233.23 ms. Allocated memory was 468.7 MB in the beginning and 1.3 GB in the end (delta: 816.3 MB). Free memory was 434.7 MB in the beginning and 275.1 MB in the end (delta: 159.6 MB). Peak memory consumption was 975.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 75 known predicates. - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 75 known predicates. - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 75 known predicates. - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 75 known predicates. - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 7). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 75 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 5 error locations. TIMEOUT Result, 123.1s OverallTime, 38 OverallIterations, 63 TraceHistogramMax, 68.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4663 SDtfs, 41664 SDslu, 98124 SDs, 0 SdLazy, 57643 SolverSat, 6498 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20265 GetRequests, 16967 SyntacticMatches, 351 SemanticMatches, 2947 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82577 ImplicationChecksByTransitivity, 78.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1157occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 37 MinimizatonAttempts, 37267 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 47.2s InterpolantComputationTime, 9706 NumberOfCodeBlocks, 9706 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 19338 ConstructedInterpolants, 0 QuantifiedInterpolants, 25960444 SizeOfPredicates, 754 NumberOfNonLiveVariables, 13448 ConjunctsInSsa, 1418 ConjunctsInUnsatCore, 74 InterpolantComputations, 6 PerfectInterpolantSequences, 140098/215186 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_strcpy_false-valid-deref_ground.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-03-28_14-36-13-912.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_strcpy_false-valid-deref_ground.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-03-28_14-36-13-912.csv Completed graceful shutdown