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_preciseopt.epf -i ../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 09:01:30,490 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 09:01:30,492 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 09:01:30,507 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 09:01:30,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 09:01:30,509 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 09:01:30,510 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 09:01:30,511 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 09:01:30,514 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 09:01:30,514 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 09:01:30,515 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 09:01:30,515 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 09:01:30,516 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 09:01:30,518 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 09:01:30,519 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 09:01:30,521 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 09:01:30,523 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 09:01:30,525 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 09:01:30,526 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 09:01:30,527 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 09:01:30,529 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 09:01:30,530 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 09:01:30,530 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 09:01:30,531 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 09:01:30,531 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 09:01:30,533 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 09:01:30,533 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 09:01:30,533 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 09:01:30,534 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 09:01:30,534 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 09:01:30,534 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 09:01:30,535 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_preciseopt.epf [2018-01-21 09:01:30,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 09:01:30,545 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 09:01:30,546 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 09:01:30,546 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 09:01:30,546 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 09:01:30,546 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 09:01:30,546 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 09:01:30,547 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 09:01:30,547 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 09:01:30,547 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 09:01:30,548 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 09:01:30,548 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 09:01:30,548 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 09:01:30,548 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 09:01:30,548 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 09:01:30,549 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 09:01:30,549 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 09:01:30,549 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 09:01:30,549 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 09:01:30,549 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 09:01:30,549 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 09:01:30,550 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 09:01:30,550 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 09:01:30,550 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 09:01:30,550 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 09:01:30,550 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 09:01:30,551 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 09:01:30,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 09:01:30,551 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 09:01:30,551 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 09:01:30,551 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 09:01:30,552 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 09:01:30,552 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 09:01:30,552 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 09:01:30,552 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 09:01:30,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 09:01:30,553 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 09:01:30,553 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 09:01:30,554 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 09:01:30,554 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 09:01:30,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 09:01:30,601 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 09:01:30,605 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 09:01:30,607 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 09:01:30,607 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 09:01:30,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-01-21 09:01:30,791 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 09:01:30,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 09:01:30,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 09:01:30,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 09:01:30,802 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 09:01:30,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:30,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655b3dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30, skipping insertion in model container [2018-01-21 09:01:30,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:30,818 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 09:01:30,854 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 09:01:30,970 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 09:01:30,988 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 09:01:30,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30 WrapperNode [2018-01-21 09:01:30,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 09:01:30,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 09:01:30,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 09:01:30,995 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 09:01:31,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:31,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:31,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:31,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:31,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:31,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:31,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (1/1) ... [2018-01-21 09:01:31,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 09:01:31,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 09:01:31,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 09:01:31,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 09:01:31,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (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 09:01:31,080 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 09:01:31,080 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 09:01:31,080 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 09:01:31,080 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 09:01:31,081 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 09:01:31,082 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 09:01:31,082 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 09:01:31,082 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 09:01:31,082 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 09:01:31,082 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 09:01:31,324 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 09:01:31,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 09:01:31 BoogieIcfgContainer [2018-01-21 09:01:31,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 09:01:31,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 09:01:31,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 09:01:31,327 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 09:01:31,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 09:01:30" (1/3) ... [2018-01-21 09:01:31,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30eef63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 09:01:31, skipping insertion in model container [2018-01-21 09:01:31,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 09:01:30" (2/3) ... [2018-01-21 09:01:31,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30eef63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 09:01:31, skipping insertion in model container [2018-01-21 09:01:31,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 09:01:31" (3/3) ... [2018-01-21 09:01:31,330 INFO L105 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-01-21 09:01:31,340 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 09:01:31,348 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 09:01:31,391 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 09:01:31,391 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 09:01:31,391 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 09:01:31,391 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 09:01:31,391 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 09:01:31,391 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 09:01:31,392 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 09:01:31,392 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 09:01:31,393 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 09:01:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 09:01:31,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 09:01:31,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 57 states. [2018-01-21 09:01:31,487 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 09:01:31,487 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-21 09:01:31,488 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-21 09:01:31,488 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-21 09:01:31,488 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-21 09:01:31,488 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 654) no Hoare annotation was computed. [2018-01-21 09:01:31,488 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 654) no Hoare annotation was computed. [2018-01-21 09:01:31,488 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 654) the Hoare annotation is: true [2018-01-21 09:01:31,489 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 654) no Hoare annotation was computed. [2018-01-21 09:01:31,489 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 654) the Hoare annotation is: true [2018-01-21 09:01:31,489 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 654) no Hoare annotation was computed. [2018-01-21 09:01:31,489 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 654) the Hoare annotation is: true [2018-01-21 09:01:31,489 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 654) no Hoare annotation was computed. [2018-01-21 09:01:31,489 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 654) no Hoare annotation was computed. [2018-01-21 09:01:31,489 INFO L401 ceAbstractionStarter]: For program point L650'(line 650) no Hoare annotation was computed. [2018-01-21 09:01:31,490 INFO L401 ceAbstractionStarter]: For program point L627(line 627) no Hoare annotation was computed. [2018-01-21 09:01:31,490 INFO L401 ceAbstractionStarter]: For program point L649'''(lines 649 650) no Hoare annotation was computed. [2018-01-21 09:01:31,490 INFO L401 ceAbstractionStarter]: For program point L647'(line 647) no Hoare annotation was computed. [2018-01-21 09:01:31,490 INFO L401 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-01-21 09:01:31,490 INFO L401 ceAbstractionStarter]: For program point L638''''(lines 638 644) no Hoare annotation was computed. [2018-01-21 09:01:31,490 INFO L401 ceAbstractionStarter]: For program point L651''(lines 651 652) no Hoare annotation was computed. [2018-01-21 09:01:31,490 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 654) no Hoare annotation was computed. [2018-01-21 09:01:31,491 INFO L401 ceAbstractionStarter]: For program point L648'(line 648) no Hoare annotation was computed. [2018-01-21 09:01:31,491 INFO L401 ceAbstractionStarter]: For program point L641(line 641) no Hoare annotation was computed. [2018-01-21 09:01:31,491 INFO L401 ceAbstractionStarter]: For program point L640(line 640) no Hoare annotation was computed. [2018-01-21 09:01:31,491 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-21 09:01:31,491 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 09:01:31,491 INFO L401 ceAbstractionStarter]: For program point L642(line 642) no Hoare annotation was computed. [2018-01-21 09:01:31,491 INFO L401 ceAbstractionStarter]: For program point L649(lines 649 650) no Hoare annotation was computed. [2018-01-21 09:01:31,492 INFO L401 ceAbstractionStarter]: For program point L648(line 648) no Hoare annotation was computed. [2018-01-21 09:01:31,492 INFO L401 ceAbstractionStarter]: For program point L628'''(line 628) no Hoare annotation was computed. [2018-01-21 09:01:31,492 INFO L401 ceAbstractionStarter]: For program point L647(lines 647 648) no Hoare annotation was computed. [2018-01-21 09:01:31,492 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 654) no Hoare annotation was computed. [2018-01-21 09:01:31,492 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-21 09:01:31,492 INFO L401 ceAbstractionStarter]: For program point L633(line 633) no Hoare annotation was computed. [2018-01-21 09:01:31,492 INFO L401 ceAbstractionStarter]: For program point L632(line 632) no Hoare annotation was computed. [2018-01-21 09:01:31,492 INFO L401 ceAbstractionStarter]: For program point L631(lines 631 637) no Hoare annotation was computed. [2018-01-21 09:01:31,493 INFO L401 ceAbstractionStarter]: For program point L638(lines 638 644) no Hoare annotation was computed. [2018-01-21 09:01:31,493 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-21 09:01:31,493 INFO L401 ceAbstractionStarter]: For program point L635(line 635) no Hoare annotation was computed. [2018-01-21 09:01:31,493 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-21 09:01:31,493 INFO L404 ceAbstractionStarter]: At program point L634'(line 634) the Hoare annotation is: true [2018-01-21 09:01:31,493 INFO L401 ceAbstractionStarter]: For program point L634'''(line 634) no Hoare annotation was computed. [2018-01-21 09:01:31,493 INFO L401 ceAbstractionStarter]: For program point L631'(lines 631 637) no Hoare annotation was computed. [2018-01-21 09:01:31,494 INFO L404 ceAbstractionStarter]: At program point L631'''(lines 631 637) the Hoare annotation is: true [2018-01-21 09:01:31,494 INFO L401 ceAbstractionStarter]: For program point L639'(line 639) no Hoare annotation was computed. [2018-01-21 09:01:31,494 INFO L401 ceAbstractionStarter]: For program point L652(line 652) no Hoare annotation was computed. [2018-01-21 09:01:31,494 INFO L401 ceAbstractionStarter]: For program point L651(line 651) no Hoare annotation was computed. [2018-01-21 09:01:31,494 INFO L401 ceAbstractionStarter]: For program point L650(line 650) no Hoare annotation was computed. [2018-01-21 09:01:31,495 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 654) no Hoare annotation was computed. [2018-01-21 09:01:31,495 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 654) the Hoare annotation is: true [2018-01-21 09:01:31,495 INFO L401 ceAbstractionStarter]: For program point L632'(line 632) no Hoare annotation was computed. [2018-01-21 09:01:31,495 INFO L404 ceAbstractionStarter]: At program point L628'(line 628) the Hoare annotation is: true [2018-01-21 09:01:31,496 INFO L404 ceAbstractionStarter]: At program point L647'''(lines 647 648) the Hoare annotation is: true [2018-01-21 09:01:31,496 INFO L401 ceAbstractionStarter]: For program point L649'(line 649) no Hoare annotation was computed. [2018-01-21 09:01:31,496 INFO L404 ceAbstractionStarter]: At program point L641'(line 641) the Hoare annotation is: true [2018-01-21 09:01:31,496 INFO L401 ceAbstractionStarter]: For program point L638'(lines 638 644) no Hoare annotation was computed. [2018-01-21 09:01:31,496 INFO L401 ceAbstractionStarter]: For program point L638'''(lines 638 644) no Hoare annotation was computed. [2018-01-21 09:01:31,496 INFO L401 ceAbstractionStarter]: For program point L641'''(line 641) no Hoare annotation was computed. [2018-01-21 09:01:31,497 INFO L401 ceAbstractionStarter]: For program point L649''''(lines 649 650) no Hoare annotation was computed. [2018-01-21 09:01:31,501 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 09:01:31,501 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 09:01:31,502 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 09:01:31,502 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 09:01:31,502 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 09:01:31,502 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 09:01:31,502 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 09:01:31,502 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 09:01:31,503 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 09:01:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 09:01:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 09:01:31,506 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 09:01:31,507 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 09:01:31,507 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 09:01:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash 154495, now seen corresponding path program 1 times [2018-01-21 09:01:31,515 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 09:01:31,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:01:31,538 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 09:01:31,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:01:31,539 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 09:01:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 09:01:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 09:01:31,600 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 09:01:31,606 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 09:01:31,612 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 09:01:31,612 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 09:01:31,612 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 09:01:31,613 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 09:01:31,613 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 09:01:31,613 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 09:01:31,613 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 09:01:31,613 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 09:01:31,613 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 09:01:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 09:01:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 09:01:31,617 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 09:01:31,617 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] [2018-01-21 09:01:31,617 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 09:01:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash 748584202, now seen corresponding path program 1 times [2018-01-21 09:01:31,618 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 09:01:31,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:01:31,619 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 09:01:31,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:01:31,619 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 09:01:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 09:01:31,641 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 09:01:31,670 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 09:01:31,671 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 09:01:31,672 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 09:01:31,672 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 09:01:31,674 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 09:01:31,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 09:01:31,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 09:01:31,750 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-01-21 09:01:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 09:01:31,771 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2018-01-21 09:01:31,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 09:01:31,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-21 09:01:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 09:01:31,781 INFO L225 Difference]: With dead ends: 92 [2018-01-21 09:01:31,781 INFO L226 Difference]: Without dead ends: 48 [2018-01-21 09:01:31,783 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 09:01:31,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-21 09:01:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-01-21 09:01:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-21 09:01:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-01-21 09:01:31,813 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 21 [2018-01-21 09:01:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 09:01:31,813 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-01-21 09:01:31,813 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 09:01:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-01-21 09:01:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 09:01:31,814 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 09:01:31,814 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, 1, 1, 1, 1, 1] [2018-01-21 09:01:31,814 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 09:01:31,815 INFO L82 PathProgramCache]: Analyzing trace with hash 482191050, now seen corresponding path program 1 times [2018-01-21 09:01:31,815 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 09:01:31,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:01:31,816 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 09:01:31,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:01:31,816 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 09:01:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 09:01:31,844 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 09:01:31,919 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 09:01:31,919 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 09:01:31,919 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 09:01:31,920 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 09:01:31,921 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 09:01:31,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 09:01:31,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 09:01:31,922 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-01-21 09:01:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 09:01:31,996 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-01-21 09:01:31,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 09:01:31,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-21 09:01:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 09:01:31,999 INFO L225 Difference]: With dead ends: 77 [2018-01-21 09:01:31,999 INFO L226 Difference]: Without dead ends: 58 [2018-01-21 09:01:32,000 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 09:01:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-21 09:01:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-01-21 09:01:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 09:01:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-01-21 09:01:32,008 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 29 [2018-01-21 09:01:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 09:01:32,008 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-01-21 09:01:32,008 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 09:01:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-01-21 09:01:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-21 09:01:32,010 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 09:01:32,010 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, 1, 1, 1, 1] [2018-01-21 09:01:32,010 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 09:01:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash 853755939, now seen corresponding path program 1 times [2018-01-21 09:01:32,011 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 09:01:32,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:01:32,013 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 09:01:32,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:01:32,013 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 09:01:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 09:01:32,040 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 09:01:32,617 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 09:01:32,618 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 09:01:32,618 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 09:01:32,619 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-01-21 09:01:32,622 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [9], [13], [15], [18], [39], [41], [44], [46], [47], [48], [49], [55], [57], [58], [59], [63], [64], [68], [70], [73], [83], [85], [88], [96], [103], [105], [106], [113], [114], [119], [126], [127], [128], [129] [2018-01-21 09:01:32,670 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 09:01:32,670 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