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/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 03:36:04,866 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 03:36:04,868 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 03:36:04,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 03:36:04,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 03:36:04,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 03:36:04,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 03:36:04,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 03:36:04,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 03:36:04,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 03:36:04,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 03:36:04,897 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 03:36:04,898 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 03:36:04,900 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 03:36:04,901 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 03:36:04,903 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 03:36:04,909 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 03:36:04,912 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 03:36:04,913 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 03:36:04,914 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 03:36:04,916 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 03:36:04,917 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 03:36:04,917 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 03:36:04,918 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 03:36:04,919 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 03:36:04,920 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 03:36:04,920 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 03:36:04,921 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 03:36:04,921 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 03:36:04,921 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 03:36:04,922 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 03:36:04,922 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-21 03:36:04,948 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 03:36:04,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 03:36:04,949 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 03:36:04,949 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 03:36:04,949 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 03:36:04,950 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 03:36:04,950 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 03:36:04,950 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 03:36:04,950 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 03:36:04,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 03:36:04,951 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 03:36:04,951 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 03:36:04,952 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 03:36:04,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 03:36:04,952 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 03:36:04,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 03:36:04,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 03:36:04,953 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 03:36:04,953 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 03:36:04,953 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 03:36:04,953 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 03:36:04,954 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 03:36:04,954 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 03:36:04,954 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 03:36:04,954 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 03:36:04,954 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 03:36:04,955 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 03:36:04,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:36:04,955 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 03:36:04,955 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 03:36:04,955 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 03:36:04,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 03:36:04,956 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 03:36:04,956 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 03:36:04,956 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 03:36:04,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 03:36:04,956 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 03:36:04,957 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 03:36:04,957 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 03:36:04,957 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 03:36:04,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 03:36:05,034 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 03:36:05,039 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 03:36:05,040 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 03:36:05,040 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 03:36:05,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-01-21 03:36:05,213 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 03:36:05,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 03:36:05,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 03:36:05,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 03:36:05,224 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 03:36:05,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31112d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05, skipping insertion in model container [2018-01-21 03:36:05,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,248 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:36:05,290 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:36:05,417 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:36:05,437 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:36:05,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05 WrapperNode [2018-01-21 03:36:05,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 03:36:05,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 03:36:05,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 03:36:05,447 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 03:36:05,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (1/1) ... [2018-01-21 03:36:05,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 03:36:05,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 03:36:05,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 03:36:05,489 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 03:36:05,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (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 [2018-01-21 03:36:05,550 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 03:36:05,550 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 03:36:05,550 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 03:36:05,551 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 03:36:05,551 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 03:36:05,551 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 03:36:05,551 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 03:36:05,551 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 03:36:05,551 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 03:36:05,551 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 03:36:05,552 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 03:36:05,552 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 03:36:05,552 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 03:36:05,552 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 03:36:05,552 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 03:36:05,552 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 03:36:05,553 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 03:36:05,553 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 03:36:05,759 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 03:36:05,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:36:05 BoogieIcfgContainer [2018-01-21 03:36:05,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 03:36:05,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 03:36:05,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 03:36:05,763 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 03:36:05,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 03:36:05" (1/3) ... [2018-01-21 03:36:05,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19026e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:36:05, skipping insertion in model container [2018-01-21 03:36:05,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:36:05" (2/3) ... [2018-01-21 03:36:05,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19026e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:36:05, skipping insertion in model container [2018-01-21 03:36:05,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:36:05" (3/3) ... [2018-01-21 03:36:05,767 INFO L105 eAbstractionObserver]: Analyzing ICFG list_flag_true-unreach-call_false-valid-memtrack.i [2018-01-21 03:36:05,776 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 03:36:05,784 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 03:36:05,837 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:36:05,837 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:36:05,837 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:36:05,837 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:36:05,837 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:36:05,838 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:36:05,838 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:36:05,838 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 03:36:05,839 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:36:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-01-21 03:36:05,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 03:36:05,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 49 states. [2018-01-21 03:36:06,001 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 03:36:06,001 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-21 03:36:06,002 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-21 03:36:06,002 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-21 03:36:06,002 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-21 03:36:06,002 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 653) no Hoare annotation was computed. [2018-01-21 03:36:06,002 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 653) no Hoare annotation was computed. [2018-01-21 03:36:06,003 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 653) the Hoare annotation is: true [2018-01-21 03:36:06,003 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 653) no Hoare annotation was computed. [2018-01-21 03:36:06,003 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 653) the Hoare annotation is: true [2018-01-21 03:36:06,003 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 653) no Hoare annotation was computed. [2018-01-21 03:36:06,003 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 653) the Hoare annotation is: true [2018-01-21 03:36:06,003 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 653) no Hoare annotation was computed. [2018-01-21 03:36:06,003 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 653) no Hoare annotation was computed. [2018-01-21 03:36:06,004 INFO L404 ceAbstractionStarter]: At program point L630'(line 630) the Hoare annotation is: true [2018-01-21 03:36:06,004 INFO L401 ceAbstractionStarter]: For program point L650'(line 650) no Hoare annotation was computed. [2018-01-21 03:36:06,004 INFO L404 ceAbstractionStarter]: At program point L649'''(lines 649 650) the Hoare annotation is: true [2018-01-21 03:36:06,004 INFO L401 ceAbstractionStarter]: For program point L629(line 629) no Hoare annotation was computed. [2018-01-21 03:36:06,004 INFO L401 ceAbstractionStarter]: For program point L647'(line 647) no Hoare annotation was computed. [2018-01-21 03:36:06,005 INFO L404 ceAbstractionStarter]: At program point L639'(line 639) the Hoare annotation is: true [2018-01-21 03:36:06,005 INFO L401 ceAbstractionStarter]: For program point L639'''(line 639) no Hoare annotation was computed. [2018-01-21 03:36:06,005 INFO L401 ceAbstractionStarter]: For program point L652(line 652) no Hoare annotation was computed. [2018-01-21 03:36:06,005 INFO L401 ceAbstractionStarter]: For program point L651''(lines 651 652) no Hoare annotation was computed. [2018-01-21 03:36:06,005 INFO L401 ceAbstractionStarter]: For program point L651(line 651) no Hoare annotation was computed. [2018-01-21 03:36:06,005 INFO L401 ceAbstractionStarter]: For program point L650(line 650) no Hoare annotation was computed. [2018-01-21 03:36:06,006 INFO L404 ceAbstractionStarter]: At program point L646'''(lines 646 647) the Hoare annotation is: true [2018-01-21 03:36:06,006 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 653) no Hoare annotation was computed. [2018-01-21 03:36:06,006 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 653) the Hoare annotation is: true [2018-01-21 03:36:06,006 INFO L401 ceAbstractionStarter]: For program point L636'(line 636) no Hoare annotation was computed. [2018-01-21 03:36:06,006 INFO L401 ceAbstractionStarter]: For program point L632'(lines 632 642) no Hoare annotation was computed. [2018-01-21 03:36:06,006 INFO L404 ceAbstractionStarter]: At program point L632'''(lines 632 642) the Hoare annotation is: true [2018-01-21 03:36:06,007 INFO L401 ceAbstractionStarter]: For program point L630'''(line 630) no Hoare annotation was computed. [2018-01-21 03:36:06,007 INFO L401 ceAbstractionStarter]: For program point L641(line 641) no Hoare annotation was computed. [2018-01-21 03:36:06,007 INFO L401 ceAbstractionStarter]: For program point L640(line 640) no Hoare annotation was computed. [2018-01-21 03:36:06,014 INFO L401 ceAbstractionStarter]: For program point L645(lines 645 650) no Hoare annotation was computed. [2018-01-21 03:36:06,015 INFO L401 ceAbstractionStarter]: For program point L632''''(lines 632 642) no Hoare annotation was computed. [2018-01-21 03:36:06,015 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 03:36:06,015 INFO L401 ceAbstractionStarter]: For program point L649(lines 649 650) no Hoare annotation was computed. [2018-01-21 03:36:06,015 INFO L401 ceAbstractionStarter]: For program point L647(line 647) no Hoare annotation was computed. [2018-01-21 03:36:06,015 INFO L401 ceAbstractionStarter]: For program point L646(lines 646 647) no Hoare annotation was computed. [2018-01-21 03:36:06,015 INFO L401 ceAbstractionStarter]: For program point L649'(line 649) no Hoare annotation was computed. [2018-01-21 03:36:06,015 INFO L401 ceAbstractionStarter]: For program point L629'(line 629) no Hoare annotation was computed. [2018-01-21 03:36:06,016 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 653) no Hoare annotation was computed. [2018-01-21 03:36:06,016 INFO L401 ceAbstractionStarter]: For program point L630(line 630) no Hoare annotation was computed. [2018-01-21 03:36:06,016 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-21 03:36:06,016 INFO L401 ceAbstractionStarter]: For program point L633(lines 633 637) no Hoare annotation was computed. [2018-01-21 03:36:06,016 INFO L401 ceAbstractionStarter]: For program point L632(lines 632 642) no Hoare annotation was computed. [2018-01-21 03:36:06,017 INFO L401 ceAbstractionStarter]: For program point L638(line 638) no Hoare annotation was computed. [2018-01-21 03:36:06,017 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-21 03:36:06,017 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-21 03:36:06,017 INFO L401 ceAbstractionStarter]: For program point L646'(line 646) no Hoare annotation was computed. [2018-01-21 03:36:06,017 INFO L401 ceAbstractionStarter]: For program point L649''''(lines 649 650) no Hoare annotation was computed. [2018-01-21 03:36:06,034 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:36:06,034 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:36:06,034 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:36:06,034 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:36:06,034 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:36:06,034 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:36:06,035 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:36:06,035 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 03:36:06,035 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:36:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-01-21 03:36:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 03:36:06,045 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:36:06,048 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 03:36:06,048 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 03:36:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash 139664, now seen corresponding path program 1 times [2018-01-21 03:36:06,060 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:36:06,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:36:06,085 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:36:06,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:36:06,086 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:36:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:36:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:36:06,151 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:36:06,157 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:36:06,163 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:36:06,163 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:36:06,163 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:36:06,163 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:36:06,163 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:36:06,164 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:36:06,164 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:36:06,164 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 03:36:06,164 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:36:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-01-21 03:36:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 03:36:06,168 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:36:06,168 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:36:06,168 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:36:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1574628710, now seen corresponding path program 1 times [2018-01-21 03:36:06,169 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:36:06,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:36:06,170 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:36:06,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:36:06,171 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:36:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:36:06,208 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:36:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:36:06,249 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:36:06,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:36:06,250 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:36:06,253 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:36:06,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:36:06,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:36:06,266 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-01-21 03:36:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:36:06,352 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2018-01-21 03:36:06,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:36:06,354 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 03:36:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:36:06,362 INFO L225 Difference]: With dead ends: 71 [2018-01-21 03:36:06,363 INFO L226 Difference]: Without dead ends: 41 [2018-01-21 03:36:06,365 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:36:06,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-21 03:36:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-01-21 03:36:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-21 03:36:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-01-21 03:36:06,397 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 20 [2018-01-21 03:36:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:36:06,398 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-01-21 03:36:06,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:36:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-01-21 03:36:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 03:36:06,399 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:36:06,399 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:36:06,399 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:36:06,400 INFO L82 PathProgramCache]: Analyzing trace with hash 456771048, now seen corresponding path program 1 times [2018-01-21 03:36:06,400 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:36:06,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:36:06,401 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:36:06,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:36:06,402 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:36:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:36:06,441 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:36:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:36:06,542 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:36:06,542 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 03:36:06,542 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:36:06,544 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 03:36:06,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 03:36:06,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 03:36:06,544 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-01-21 03:36:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:36:06,668 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2018-01-21 03:36:06,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 03:36:06,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-01-21 03:36:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:36:06,670 INFO L225 Difference]: With dead ends: 67 [2018-01-21 03:36:06,670 INFO L226 Difference]: Without dead ends: 48 [2018-01-21 03:36:06,671 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 03:36:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-21 03:36:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-01-21 03:36:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-21 03:36:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-01-21 03:36:06,681 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 24 [2018-01-21 03:36:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:36:06,681 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-01-21 03:36:06,681 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 03:36:06,681 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-01-21 03:36:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-21 03:36:06,683 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:36:06,683 INFO L322 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, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:36:06,683 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:36:06,683 INFO L82 PathProgramCache]: Analyzing trace with hash 590533786, now seen corresponding path program 1 times [2018-01-21 03:36:06,684 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:36:06,687 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:36:06,688 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:36:06,688 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:36:06,688 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:36:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:36:06,723 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:36:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:36:06,943 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:36:06,943 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 03:36:06,945 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-21 03:36:06,948 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [8], [10], [14], [16], [19], [21], [24], [25], [30], [31], [37], [39], [40], [41], [45], [46], [49], [53], [55], [58], [84], [91], [93], [100], [101], [106], [111], [112], [113], [114] [2018-01-21 03:36:07,022 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 03:36:07,023 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown