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/loop-acceleration/array3_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8168ed2-m [2018-04-12 06:00:49,732 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-12 06:00:49,734 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-12 06:00:49,749 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-12 06:00:49,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-12 06:00:49,750 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-12 06:00:49,751 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-12 06:00:49,753 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-12 06:00:49,755 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-12 06:00:49,756 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-12 06:00:49,757 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-12 06:00:49,757 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-12 06:00:49,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-12 06:00:49,759 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-12 06:00:49,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-12 06:00:49,761 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-12 06:00:49,763 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-12 06:00:49,765 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-12 06:00:49,766 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-12 06:00:49,767 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-12 06:00:49,769 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-12 06:00:49,770 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-12 06:00:49,770 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-12 06:00:49,771 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-12 06:00:49,772 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-12 06:00:49,773 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-12 06:00:49,773 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-12 06:00:49,774 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-12 06:00:49,774 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-12 06:00:49,775 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-12 06:00:49,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-12 06:00:49,776 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 [2018-04-12 06:00:49,799 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-12 06:00:49,800 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-12 06:00:49,800 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-12 06:00:49,800 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-12 06:00:49,801 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-12 06:00:49,801 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-12 06:00:49,801 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-12 06:00:49,801 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-12 06:00:49,802 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-12 06:00:49,802 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-12 06:00:49,802 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-12 06:00:49,802 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-12 06:00:49,803 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-12 06:00:49,803 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-12 06:00:49,803 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-12 06:00:49,803 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-12 06:00:49,803 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-12 06:00:49,804 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-12 06:00:49,804 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-12 06:00:49,804 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-12 06:00:49,804 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-12 06:00:49,804 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-12 06:00:49,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-12 06:00:49,805 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-12 06:00:49,805 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-12 06:00:49,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-12 06:00:49,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-12 06:00:49,806 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-12 06:00:49,806 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-12 06:00:49,806 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-12 06:00:49,806 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-12 06:00:49,806 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-12 06:00:49,807 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-12 06:00:49,807 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-12 06:00:49,808 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-12 06:00:49,808 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-12 06:00:49,808 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-12 06:00:49,808 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-12 06:00:49,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-12 06:00:49,855 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-12 06:00:49,858 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-12 06:00:49,860 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-12 06:00:49,860 INFO L276 PluginConnector]: CDTParser initialized [2018-04-12 06:00:49,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array3_false-valid-deref.i [2018-04-12 06:00:50,209 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG21a8bc5f6 [2018-04-12 06:00:50,347 INFO L287 CDTParser]: IsIndexed: true [2018-04-12 06:00:50,347 INFO L288 CDTParser]: Found 1 translation units. [2018-04-12 06:00:50,348 INFO L168 CDTParser]: Scanning array3_false-valid-deref.i [2018-04-12 06:00:50,349 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-12 06:00:50,349 INFO L215 ultiparseSymbolTable]: [2018-04-12 06:00:50,349 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-12 06:00:50,349 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_farray__false_valid_deref_i____VERIFIER_assert ('__VERIFIER_assert') in array3_false-valid-deref.i [2018-04-12 06:00:50,349 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in array3_false-valid-deref.i [2018-04-12 06:00:50,349 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-12 06:00:50,349 INFO L233 ultiparseSymbolTable]: [2018-04-12 06:00:50,363 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG21a8bc5f6 [2018-04-12 06:00:50,368 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-12 06:00:50,370 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-04-12 06:00:50,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-12 06:00:50,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-12 06:00:50,377 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-12 06:00:50,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afd3e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50, skipping insertion in model container [2018-04-12 06:00:50,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,394 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 06:00:50,407 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 06:00:50,533 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 06:00:50,548 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 06:00:50,553 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 6 non ball SCCs. Number of states in SCCs 6. [2018-04-12 06:00:50,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50 WrapperNode [2018-04-12 06:00:50,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-12 06:00:50,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-12 06:00:50,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-12 06:00:50,561 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-12 06:00:50,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-12 06:00:50,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-12 06:00:50,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-12 06:00:50,585 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-12 06:00:50,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (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 [2018-04-12 06:00:50,650 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-12 06:00:50,651 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-12 06:00:50,651 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_farray__false_valid_deref_i____VERIFIER_assert [2018-04-12 06:00:50,651 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-12 06:00:50,651 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-04-12 06:00:50,651 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-12 06:00:50,651 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_farray__false_valid_deref_i____VERIFIER_assert [2018-04-12 06:00:50,652 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-12 06:00:50,652 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-12 06:00:50,652 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-12 06:00:50,842 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-12 06:00:50,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 06:00:50 BoogieIcfgContainer [2018-04-12 06:00:50,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-12 06:00:50,843 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-04-12 06:00:50,843 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-04-12 06:00:50,844 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-04-12 06:00:50,846 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 06:00:50" (1/1) ... [2018-04-12 06:00:50,850 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-04-12 06:00:50,862 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 6 non ball SCCs. Number of states in SCCs 6. [2018-04-12 06:00:50,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 12.04 06:00:50 BasicIcfg [2018-04-12 06:00:50,863 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-04-12 06:00:50,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-12 06:00:50,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-12 06:00:50,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-12 06:00:50,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.04 06:00:50" (1/4) ... [2018-04-12 06:00:50,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454f340b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 06:00:50, skipping insertion in model container [2018-04-12 06:00:50,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 06:00:50" (2/4) ... [2018-04-12 06:00:50,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454f340b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 06:00:50, skipping insertion in model container [2018-04-12 06:00:50,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 06:00:50" (3/4) ... [2018-04-12 06:00:50,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454f340b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.04 06:00:50, skipping insertion in model container [2018-04-12 06:00:50,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 12.04 06:00:50" (4/4) ... [2018-04-12 06:00:50,871 INFO L107 eAbstractionObserver]: Analyzing ICFG array3_false-valid-deref.ileft_unchanged_by_heapseparator [2018-04-12 06:00:50,877 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-12 06:00:50,883 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-04-12 06:00:50,925 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-12 06:00:50,926 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-12 06:00:50,926 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-12 06:00:50,926 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-12 06:00:50,926 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-12 06:00:50,926 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-12 06:00:50,926 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-12 06:00:50,926 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-12 06:00:50,926 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-12 06:00:50,927 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-12 06:00:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-04-12 06:00:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-04-12 06:00:50,944 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:00:50,945 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:00:50,945 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:00:50,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1692213986, 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 [2018-04-12 06:00:50,961 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:00:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:00:50,983 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:00:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 06:00:51,021 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:00:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 06:00:51,060 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-12 06:00:51,060 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-12 06:00:51,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-12 06:00:51,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-12 06:00:51,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-12 06:00:51,074 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2018-04-12 06:00:51,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:00:51,162 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2018-04-12 06:00:51,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-12 06:00:51,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-04-12 06:00:51,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:00:51,170 INFO L225 Difference]: With dead ends: 76 [2018-04-12 06:00:51,170 INFO L226 Difference]: Without dead ends: 40 [2018-04-12 06:00:51,173 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-12 06:00:51,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-04-12 06:00:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2018-04-12 06:00:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-04-12 06:00:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-04-12 06:00:51,209 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 10 [2018-04-12 06:00:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:00:51,209 INFO L459 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-04-12 06:00:51,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-12 06:00:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-04-12 06:00:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-04-12 06:00:51,211 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:00:51,211 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:00:51,211 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:00:51,211 INFO L82 PathProgramCache]: Analyzing trace with hash -480009733, 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 [2018-04-12 06:00:51,221 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:00:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:00:51,234 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:00:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 06:00:51,295 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:00:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 06:00:51,347 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-12 06:00:51,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-12 06:00:51,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-12 06:00:51,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-12 06:00:51,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-04-12 06:00:51,350 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2018-04-12 06:00:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:00:51,471 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2018-04-12 06:00:51,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-12 06:00:51,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-04-12 06:00:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:00:51,473 INFO L225 Difference]: With dead ends: 40 [2018-04-12 06:00:51,473 INFO L226 Difference]: Without dead ends: 39 [2018-04-12 06:00:51,474 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-04-12 06:00:51,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-04-12 06:00:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2018-04-12 06:00:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-04-12 06:00:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-04-12 06:00:51,479 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 19 [2018-04-12 06:00:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:00:51,480 INFO L459 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-04-12 06:00:51,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-12 06:00:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-04-12 06:00:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-04-12 06:00:51,481 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:00:51,481 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, 1] [2018-04-12 06:00:51,481 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:00:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1943421728, 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 [2018-04-12 06:00:51,494 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:00:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:00:51,507 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:00:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:51,547 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:00:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:51,612 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 06:00:51,612 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-04-12 06:00:51,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-12 06:00:51,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-12 06:00:51,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-12 06:00:51,613 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 8 states. [2018-04-12 06:00:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:00:51,716 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2018-04-12 06:00:51,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-12 06:00:51,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-04-12 06:00:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:00:51,717 INFO L225 Difference]: With dead ends: 62 [2018-04-12 06:00:51,717 INFO L226 Difference]: Without dead ends: 51 [2018-04-12 06:00:51,718 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-04-12 06:00:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-04-12 06:00:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-04-12 06:00:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-04-12 06:00:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-04-12 06:00:51,726 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 28 [2018-04-12 06:00:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:00:51,726 INFO L459 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-04-12 06:00:51,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-12 06:00:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-04-12 06:00:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-12 06:00:51,728 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:00:51,729 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:00:51,729 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:00:51,729 INFO L82 PathProgramCache]: Analyzing trace with hash 639492352, now seen corresponding path program 2 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 [2018-04-12 06:00:51,744 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:00:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:00:51,760 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:00:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:51,910 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:00:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:52,034 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 06:00:52,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-12 06:00:52,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-12 06:00:52,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-12 06:00:52,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-04-12 06:00:52,035 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2018-04-12 06:00:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:00:52,316 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2018-04-12 06:00:52,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-12 06:00:52,317 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2018-04-12 06:00:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:00:52,318 INFO L225 Difference]: With dead ends: 98 [2018-04-12 06:00:52,318 INFO L226 Difference]: Without dead ends: 87 [2018-04-12 06:00:52,318 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-04-12 06:00:52,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-04-12 06:00:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-04-12 06:00:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-04-12 06:00:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-04-12 06:00:52,325 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 46 [2018-04-12 06:00:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:00:52,325 INFO L459 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-04-12 06:00:52,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-12 06:00:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-04-12 06:00:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-04-12 06:00:52,328 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:00:52,328 INFO L355 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:00:52,328 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:00:52,328 INFO L82 PathProgramCache]: Analyzing trace with hash 348770624, now seen corresponding path program 3 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 [2018-04-12 06:00:52,337 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:00:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:00:52,359 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:00:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:52,574 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:00:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:52,775 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 06:00:52,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-04-12 06:00:52,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-12 06:00:52,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-12 06:00:52,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-04-12 06:00:52,777 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 32 states. [2018-04-12 06:00:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:00:53,326 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2018-04-12 06:00:53,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-12 06:00:53,327 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 82 [2018-04-12 06:00:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:00:53,329 INFO L225 Difference]: With dead ends: 170 [2018-04-12 06:00:53,330 INFO L226 Difference]: Without dead ends: 159 [2018-04-12 06:00:53,331 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-04-12 06:00:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-04-12 06:00:53,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-04-12 06:00:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-04-12 06:00:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-04-12 06:00:53,346 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 82 [2018-04-12 06:00:53,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:00:53,347 INFO L459 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-04-12 06:00:53,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-12 06:00:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-04-12 06:00:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-04-12 06:00:53,348 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:00:53,348 INFO L355 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:00:53,349 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:00:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1318563392, now seen corresponding path program 4 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 [2018-04-12 06:00:53,357 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:00:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:00:53,391 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:00:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:53,763 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:00:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:54,394 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 06:00:54,394 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-04-12 06:00:54,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-12 06:00:54,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-12 06:00:54,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2018-04-12 06:00:54,396 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 64 states. [2018-04-12 06:00:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:00:55,868 INFO L93 Difference]: Finished difference Result 314 states and 331 transitions. [2018-04-12 06:00:55,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-12 06:00:55,868 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 154 [2018-04-12 06:00:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:00:55,870 INFO L225 Difference]: With dead ends: 314 [2018-04-12 06:00:55,870 INFO L226 Difference]: Without dead ends: 303 [2018-04-12 06:00:55,873 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4867, Invalid=10385, Unknown=0, NotChecked=0, Total=15252 [2018-04-12 06:00:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-04-12 06:00:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-04-12 06:00:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-04-12 06:00:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-04-12 06:00:55,895 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 154 [2018-04-12 06:00:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:00:55,895 INFO L459 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-04-12 06:00:55,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-12 06:00:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-04-12 06:00:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-04-12 06:00:55,902 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:00:55,902 INFO L355 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:00:55,902 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:00:55,903 INFO L82 PathProgramCache]: Analyzing trace with hash -981478720, now seen corresponding path program 5 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 [2018-04-12 06:00:55,920 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:00:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:00:55,984 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:00:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4249 backedges. 0 proven. 4247 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:57,248 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:00:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4249 backedges. 0 proven. 4247 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:00:59,536 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 06:00:59,536 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 128 [2018-04-12 06:00:59,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-12 06:00:59,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-12 06:00:59,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2018-04-12 06:00:59,540 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 128 states. [2018-04-12 06:01:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:01:03,992 INFO L93 Difference]: Finished difference Result 602 states and 635 transitions. [2018-04-12 06:01:03,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-04-12 06:01:03,993 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 298 [2018-04-12 06:01:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:01:03,998 INFO L225 Difference]: With dead ends: 602 [2018-04-12 06:01:03,998 INFO L226 Difference]: Without dead ends: 591 [2018-04-12 06:01:04,006 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14169 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=19971, Invalid=43281, Unknown=0, NotChecked=0, Total=63252 [2018-04-12 06:01:04,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-04-12 06:01:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 587. [2018-04-12 06:01:04,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2018-04-12 06:01:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 588 transitions. [2018-04-12 06:01:04,033 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 588 transitions. Word has length 298 [2018-04-12 06:01:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:01:04,034 INFO L459 AbstractCegarLoop]: Abstraction has 587 states and 588 transitions. [2018-04-12 06:01:04,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-12 06:01:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 588 transitions. [2018-04-12 06:01:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-04-12 06:01:04,046 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:01:04,046 INFO L355 BasicCegarLoop]: trace histogram [64, 63, 63, 63, 63, 63, 63, 63, 63, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:01:04,046 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:01:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash 119067840, now seen corresponding path program 6 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 [2018-04-12 06:01:04,062 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:01:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:01:04,157 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:01:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 17705 backedges. 0 proven. 17703 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:01:07,669 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:01:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 17705 backedges. 0 proven. 17703 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:01:16,210 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 06:01:16,210 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 256 [2018-04-12 06:01:16,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-04-12 06:01:16,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-04-12 06:01:16,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16512, Invalid=48768, Unknown=0, NotChecked=0, Total=65280 [2018-04-12 06:01:16,215 INFO L87 Difference]: Start difference. First operand 587 states and 588 transitions. Second operand 256 states. [2018-04-12 06:01:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:01:34,132 INFO L93 Difference]: Finished difference Result 1178 states and 1243 transitions. [2018-04-12 06:01:34,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 381 states. [2018-04-12 06:01:34,132 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 586 [2018-04-12 06:01:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:01:34,136 INFO L225 Difference]: With dead ends: 1178 [2018-04-12 06:01:34,136 INFO L226 Difference]: Without dead ends: 1167 [2018-04-12 06:01:34,142 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1423 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59033 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=80899, Invalid=176657, Unknown=0, NotChecked=0, Total=257556 [2018-04-12 06:01:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2018-04-12 06:01:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1163. [2018-04-12 06:01:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2018-04-12 06:01:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1164 transitions. [2018-04-12 06:01:34,179 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1164 transitions. Word has length 586 [2018-04-12 06:01:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:01:34,180 INFO L459 AbstractCegarLoop]: Abstraction has 1163 states and 1164 transitions. [2018-04-12 06:01:34,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-04-12 06:01:34,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1164 transitions. [2018-04-12 06:01:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2018-04-12 06:01:34,193 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:01:34,194 INFO L355 BasicCegarLoop]: trace histogram [128, 127, 127, 127, 127, 127, 127, 127, 127, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:01:34,194 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:01:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1609750720, now seen corresponding path program 7 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 [2018-04-12 06:01:34,203 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:01:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:01:34,390 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 06:01:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 72265 backedges. 0 proven. 72263 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:01:48,515 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:02:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 72265 backedges. 0 proven. 72263 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:02:24,870 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 06:02:24,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 257] total 512 [2018-04-12 06:02:24,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 512 states [2018-04-12 06:02:24,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2018-04-12 06:02:24,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65792, Invalid=195840, Unknown=0, NotChecked=0, Total=261632 [2018-04-12 06:02:24,882 INFO L87 Difference]: Start difference. First operand 1163 states and 1164 transitions. Second operand 512 states. [2018-04-12 06:03:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 06:03:48,198 INFO L93 Difference]: Finished difference Result 2330 states and 2459 transitions. [2018-04-12 06:03:48,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 765 states. [2018-04-12 06:03:48,198 INFO L78 Accepts]: Start accepts. Automaton has 512 states. Word has length 1162 [2018-04-12 06:03:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 06:03:48,210 INFO L225 Difference]: With dead ends: 2330 [2018-04-12 06:03:48,210 INFO L226 Difference]: Without dead ends: 2319 [2018-04-12 06:03:48,230 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2831 GetRequests, 1813 SyntacticMatches, 0 SemanticMatches, 1018 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240921 ImplicationChecksByTransitivity, 113.0s TimeCoverageRelationStatistics Valid=325635, Invalid=713745, Unknown=0, NotChecked=0, Total=1039380 [2018-04-12 06:03:48,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2018-04-12 06:03:48,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2315. [2018-04-12 06:03:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2315 states. [2018-04-12 06:03:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 2316 transitions. [2018-04-12 06:03:48,294 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 2316 transitions. Word has length 1162 [2018-04-12 06:03:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 06:03:48,296 INFO L459 AbstractCegarLoop]: Abstraction has 2315 states and 2316 transitions. [2018-04-12 06:03:48,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 512 states. [2018-04-12 06:03:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 2316 transitions. [2018-04-12 06:03:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2315 [2018-04-12 06:03:48,335 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 06:03:48,336 INFO L355 BasicCegarLoop]: trace histogram [256, 255, 255, 255, 255, 255, 255, 255, 255, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 06:03:48,336 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr1AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 06:03:48,337 INFO L82 PathProgramCache]: Analyzing trace with hash -398008128, now seen corresponding path program 8 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 [2018-04-12 06:03:48,345 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 06:03:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 06:03:48,701 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-04-12 06:04:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 291977 backedges. 0 proven. 291975 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 06:04:42,168 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 06:04:42,174 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-04-12 06:04:42,175 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-12 06:04:42,179 WARN L197 ceAbstractionStarter]: Timeout [2018-04-12 06:04:42,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.04 06:04:42 BasicIcfg [2018-04-12 06:04:42,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-12 06:04:42,180 INFO L168 Benchmark]: Toolchain (without parser) took 231811.36 ms. Allocated memory was 304.6 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 245.7 MB in the beginning and 215.3 MB in the end (delta: 30.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. [2018-04-12 06:04:42,181 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 266.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-12 06:04:42,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.33 ms. Allocated memory is still 304.6 MB. Free memory was 245.7 MB in the beginning and 236.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-04-12 06:04:42,182 INFO L168 Benchmark]: Boogie Preprocessor took 23.01 ms. Allocated memory is still 304.6 MB. Free memory was 236.7 MB in the beginning and 234.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-12 06:04:42,183 INFO L168 Benchmark]: RCFGBuilder took 258.11 ms. Allocated memory was 304.6 MB in the beginning and 465.0 MB in the end (delta: 160.4 MB). Free memory was 234.7 MB in the beginning and 436.1 MB in the end (delta: -201.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 5.3 GB. [2018-04-12 06:04:42,183 INFO L168 Benchmark]: IcfgTransformer took 20.64 ms. Allocated memory is still 465.0 MB. Free memory was 436.1 MB in the beginning and 434.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-04-12 06:04:42,184 INFO L168 Benchmark]: TraceAbstraction took 231314.83 ms. Allocated memory was 465.0 MB in the beginning and 2.2 GB in the end (delta: 1.7 GB). Free memory was 434.7 MB in the beginning and 215.3 MB in the end (delta: 219.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. [2018-04-12 06:04:42,187 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 266.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 190.33 ms. Allocated memory is still 304.6 MB. Free memory was 245.7 MB in the beginning and 236.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.01 ms. Allocated memory is still 304.6 MB. Free memory was 236.7 MB in the beginning and 234.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 258.11 ms. Allocated memory was 304.6 MB in the beginning and 465.0 MB in the end (delta: 160.4 MB). Free memory was 234.7 MB in the beginning and 436.1 MB in the end (delta: -201.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 5.3 GB. * IcfgTransformer took 20.64 ms. Allocated memory is still 465.0 MB. Free memory was 436.1 MB in the beginning and 434.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 231314.83 ms. Allocated memory was 465.0 MB in the beginning and 2.2 GB in the end (delta: 1.7 GB). Free memory was 434.7 MB in the beginning and 215.3 MB in the end (delta: 219.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 15]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 15). Cancelled while BasicCegarLoop was analyzing trace of length 2315 with TraceHistMax 256, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 513 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 2315 with TraceHistMax 256, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 513 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 2 error locations. TIMEOUT Result, 231.2s OverallTime, 10 OverallIterations, 256 TraceHistogramMax, 108.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 188 SDtfs, 7029 SDslu, 3115 SDs, 0 SdLazy, 3383 SolverSat, 4306 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5752 GetRequests, 3748 SyntacticMatches, 2 SemanticMatches, 2002 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318201 ImplicationChecksByTransitivity, 151.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2315occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 47 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 67.9s InterpolantComputationTime, 2385 NumberOfCodeBlocks, 2385 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4752 ConstructedInterpolants, 0 QuantifiedInterpolants, 10718424 SizeOfPredicates, 503 NumberOfNonLiveVariables, 3213 ConjunctsInSsa, 516 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 34/190886 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/array3_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-04-12_06-04-42-198.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array3_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-12_06-04-42-198.csv Completed graceful shutdown