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_precise.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 06:19:17,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 06:19:17,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 06:19:17,563 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 06:19:17,563 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 06:19:17,564 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 06:19:17,565 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 06:19:17,567 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 06:19:17,569 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 06:19:17,570 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 06:19:17,571 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 06:19:17,571 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 06:19:17,572 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 06:19:17,574 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 06:19:17,575 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 06:19:17,577 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 06:19:17,579 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 06:19:17,581 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 06:19:17,582 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 06:19:17,584 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 06:19:17,586 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 06:19:17,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 06:19:17,587 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 06:19:17,588 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 06:19:17,588 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 06:19:17,590 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 06:19:17,590 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 06:19:17,591 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 06:19:17,591 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 06:19:17,591 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 06:19:17,592 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 06:19:17,592 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_precise.epf [2018-01-21 06:19:17,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 06:19:17,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 06:19:17,603 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 06:19:17,603 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 06:19:17,603 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 06:19:17,604 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 06:19:17,604 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 06:19:17,604 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 06:19:17,605 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 06:19:17,605 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 06:19:17,605 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 06:19:17,605 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 06:19:17,605 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 06:19:17,605 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 06:19:17,606 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 06:19:17,606 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 06:19:17,606 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 06:19:17,606 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 06:19:17,606 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 06:19:17,607 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 06:19:17,607 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 06:19:17,607 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 06:19:17,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 06:19:17,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 06:19:17,608 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 06:19:17,608 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 06:19:17,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 06:19:17,608 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 06:19:17,608 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 06:19:17,609 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 06:19:17,609 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 06:19:17,609 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 06:19:17,609 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 06:19:17,609 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 06:19:17,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 06:19:17,610 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 06:19:17,610 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 06:19:17,611 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 06:19:17,611 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 06:19:17,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 06:19:17,659 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 06:19:17,663 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 06:19:17,664 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 06:19:17,665 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 06:19:17,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-01-21 06:19:17,842 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 06:19:17,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 06:19:17,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 06:19:17,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 06:19:17,853 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 06:19:17,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 06:19:17" (1/1) ... [2018-01-21 06:19:17,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793dbc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:17, skipping insertion in model container [2018-01-21 06:19:17,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 06:19:17" (1/1) ... [2018-01-21 06:19:17,873 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 06:19:17,911 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 06:19:18,022 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 06:19:18,038 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 06:19:18,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18 WrapperNode [2018-01-21 06:19:18,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 06:19:18,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 06:19:18,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 06:19:18,048 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 06:19:18,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (1/1) ... [2018-01-21 06:19:18,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (1/1) ... [2018-01-21 06:19:18,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (1/1) ... [2018-01-21 06:19:18,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (1/1) ... [2018-01-21 06:19:18,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (1/1) ... [2018-01-21 06:19:18,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (1/1) ... [2018-01-21 06:19:18,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (1/1) ... [2018-01-21 06:19:18,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 06:19:18,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 06:19:18,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 06:19:18,081 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 06:19:18,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (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 06:19:18,125 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 06:19:18,125 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 06:19:18,125 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 06:19:18,125 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 06:19:18,126 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 06:19:18,126 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 06:19:18,126 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 06:19:18,126 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 06:19:18,126 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 06:19:18,126 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 06:19:18,126 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 06:19:18,127 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 06:19:18,127 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 06:19:18,127 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 06:19:18,127 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 06:19:18,127 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 06:19:18,127 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 06:19:18,128 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 06:19:18,365 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 06:19:18,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 06:19:18 BoogieIcfgContainer [2018-01-21 06:19:18,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 06:19:18,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 06:19:18,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 06:19:18,368 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 06:19:18,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 06:19:17" (1/3) ... [2018-01-21 06:19:18,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216833a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 06:19:18, skipping insertion in model container [2018-01-21 06:19:18,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:19:18" (2/3) ... [2018-01-21 06:19:18,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216833a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 06:19:18, skipping insertion in model container [2018-01-21 06:19:18,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 06:19:18" (3/3) ... [2018-01-21 06:19:18,371 INFO L105 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-01-21 06:19:18,379 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 06:19:18,385 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 06:19:18,427 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:19:18,427 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:19:18,427 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:19:18,427 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:19:18,427 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:19:18,428 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:19:18,428 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:19:18,428 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 06:19:18,428 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:19:18,442 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 06:19:18,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 06:19:18,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 57 states. [2018-01-21 06:19:18,545 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 06:19:18,545 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-21 06:19:18,546 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-21 06:19:18,546 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-21 06:19:18,546 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-21 06:19:18,546 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 654) no Hoare annotation was computed. [2018-01-21 06:19:18,546 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 654) no Hoare annotation was computed. [2018-01-21 06:19:18,547 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 654) the Hoare annotation is: true [2018-01-21 06:19:18,547 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 654) no Hoare annotation was computed. [2018-01-21 06:19:18,547 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 654) the Hoare annotation is: true [2018-01-21 06:19:18,547 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 654) no Hoare annotation was computed. [2018-01-21 06:19:18,547 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 654) the Hoare annotation is: true [2018-01-21 06:19:18,547 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 654) no Hoare annotation was computed. [2018-01-21 06:19:18,548 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 654) no Hoare annotation was computed. [2018-01-21 06:19:18,548 INFO L401 ceAbstractionStarter]: For program point L650'(line 650) no Hoare annotation was computed. [2018-01-21 06:19:18,548 INFO L401 ceAbstractionStarter]: For program point L627(line 627) no Hoare annotation was computed. [2018-01-21 06:19:18,548 INFO L401 ceAbstractionStarter]: For program point L649'''(lines 649 650) no Hoare annotation was computed. [2018-01-21 06:19:18,548 INFO L401 ceAbstractionStarter]: For program point L647'(line 647) no Hoare annotation was computed. [2018-01-21 06:19:18,548 INFO L401 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-01-21 06:19:18,548 INFO L401 ceAbstractionStarter]: For program point L638''''(lines 638 644) no Hoare annotation was computed. [2018-01-21 06:19:18,548 INFO L401 ceAbstractionStarter]: For program point L651''(lines 651 652) no Hoare annotation was computed. [2018-01-21 06:19:18,549 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 654) no Hoare annotation was computed. [2018-01-21 06:19:18,549 INFO L401 ceAbstractionStarter]: For program point L648'(line 648) no Hoare annotation was computed. [2018-01-21 06:19:18,549 INFO L401 ceAbstractionStarter]: For program point L641(line 641) no Hoare annotation was computed. [2018-01-21 06:19:18,549 INFO L401 ceAbstractionStarter]: For program point L640(line 640) no Hoare annotation was computed. [2018-01-21 06:19:18,549 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-21 06:19:18,549 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 06:19:18,549 INFO L401 ceAbstractionStarter]: For program point L642(line 642) no Hoare annotation was computed. [2018-01-21 06:19:18,550 INFO L401 ceAbstractionStarter]: For program point L649(lines 649 650) no Hoare annotation was computed. [2018-01-21 06:19:18,550 INFO L401 ceAbstractionStarter]: For program point L648(line 648) no Hoare annotation was computed. [2018-01-21 06:19:18,550 INFO L401 ceAbstractionStarter]: For program point L628'''(line 628) no Hoare annotation was computed. [2018-01-21 06:19:18,550 INFO L401 ceAbstractionStarter]: For program point L647(lines 647 648) no Hoare annotation was computed. [2018-01-21 06:19:18,550 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 654) no Hoare annotation was computed. [2018-01-21 06:19:18,550 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-21 06:19:18,550 INFO L401 ceAbstractionStarter]: For program point L633(line 633) no Hoare annotation was computed. [2018-01-21 06:19:18,551 INFO L401 ceAbstractionStarter]: For program point L632(line 632) no Hoare annotation was computed. [2018-01-21 06:19:18,551 INFO L401 ceAbstractionStarter]: For program point L631(lines 631 637) no Hoare annotation was computed. [2018-01-21 06:19:18,551 INFO L401 ceAbstractionStarter]: For program point L638(lines 638 644) no Hoare annotation was computed. [2018-01-21 06:19:18,551 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-21 06:19:18,551 INFO L401 ceAbstractionStarter]: For program point L635(line 635) no Hoare annotation was computed. [2018-01-21 06:19:18,551 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-21 06:19:18,552 INFO L404 ceAbstractionStarter]: At program point L634'(line 634) the Hoare annotation is: true [2018-01-21 06:19:18,552 INFO L401 ceAbstractionStarter]: For program point L634'''(line 634) no Hoare annotation was computed. [2018-01-21 06:19:18,552 INFO L401 ceAbstractionStarter]: For program point L631'(lines 631 637) no Hoare annotation was computed. [2018-01-21 06:19:18,552 INFO L404 ceAbstractionStarter]: At program point L631'''(lines 631 637) the Hoare annotation is: true [2018-01-21 06:19:18,552 INFO L401 ceAbstractionStarter]: For program point L639'(line 639) no Hoare annotation was computed. [2018-01-21 06:19:18,552 INFO L401 ceAbstractionStarter]: For program point L652(line 652) no Hoare annotation was computed. [2018-01-21 06:19:18,553 INFO L401 ceAbstractionStarter]: For program point L651(line 651) no Hoare annotation was computed. [2018-01-21 06:19:18,553 INFO L401 ceAbstractionStarter]: For program point L650(line 650) no Hoare annotation was computed. [2018-01-21 06:19:18,553 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 654) no Hoare annotation was computed. [2018-01-21 06:19:18,553 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 654) the Hoare annotation is: true [2018-01-21 06:19:18,553 INFO L401 ceAbstractionStarter]: For program point L632'(line 632) no Hoare annotation was computed. [2018-01-21 06:19:18,553 INFO L404 ceAbstractionStarter]: At program point L628'(line 628) the Hoare annotation is: true [2018-01-21 06:19:18,554 INFO L404 ceAbstractionStarter]: At program point L647'''(lines 647 648) the Hoare annotation is: true [2018-01-21 06:19:18,554 INFO L401 ceAbstractionStarter]: For program point L649'(line 649) no Hoare annotation was computed. [2018-01-21 06:19:18,554 INFO L404 ceAbstractionStarter]: At program point L641'(line 641) the Hoare annotation is: true [2018-01-21 06:19:18,554 INFO L401 ceAbstractionStarter]: For program point L638'(lines 638 644) no Hoare annotation was computed. [2018-01-21 06:19:18,554 INFO L401 ceAbstractionStarter]: For program point L638'''(lines 638 644) no Hoare annotation was computed. [2018-01-21 06:19:18,554 INFO L401 ceAbstractionStarter]: For program point L641'''(line 641) no Hoare annotation was computed. [2018-01-21 06:19:18,555 INFO L401 ceAbstractionStarter]: For program point L649''''(lines 649 650) no Hoare annotation was computed. [2018-01-21 06:19:18,559 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:19:18,559 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:19:18,559 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:19:18,560 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:19:18,560 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:19:18,560 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:19:18,560 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:19:18,560 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 06:19:18,560 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:19:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 06:19:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 06:19:18,564 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:19:18,565 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 06:19:18,565 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 06:19:18,570 INFO L82 PathProgramCache]: Analyzing trace with hash 154495, now seen corresponding path program 1 times [2018-01-21 06:19:18,573 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:19:18,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:19:18,596 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:19:18,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:19:18,597 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:19:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:19:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:19:18,653 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 06:19:18,658 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:19:18,664 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:19:18,664 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:19:18,664 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:19:18,664 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:19:18,664 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:19:18,665 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:19:18,665 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:19:18,665 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 06:19:18,665 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:19:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 06:19:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 06:19:18,669 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:19:18,670 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 06:19:18,670 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:19:18,670 INFO L82 PathProgramCache]: Analyzing trace with hash 748584202, now seen corresponding path program 1 times [2018-01-21 06:19:18,670 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:19:18,672 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:19:18,672 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:19:18,672 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:19:18,672 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:19:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:19:18,696 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:19:18,728 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 06:19:18,730 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:19:18,731 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 06:19:18,731 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:19:18,733 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 06:19:18,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 06:19:18,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 06:19:18,821 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-01-21 06:19:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:19:18,843 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2018-01-21 06:19:18,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 06:19:18,845 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-21 06:19:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:19:18,854 INFO L225 Difference]: With dead ends: 92 [2018-01-21 06:19:18,854 INFO L226 Difference]: Without dead ends: 48 [2018-01-21 06:19:18,857 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 06:19:18,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-21 06:19:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-01-21 06:19:18,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-21 06:19:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-01-21 06:19:18,887 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 21 [2018-01-21 06:19:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:19:18,887 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-01-21 06:19:18,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 06:19:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-01-21 06:19:18,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 06:19:18,889 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:19:18,889 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 06:19:18,889 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:19:18,889 INFO L82 PathProgramCache]: Analyzing trace with hash 482191050, now seen corresponding path program 1 times [2018-01-21 06:19:18,890 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:19:18,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:19:18,891 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:19:18,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:19:18,891 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:19:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:19:18,916 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:19:19,000 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 06:19:19,001 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:19:19,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 06:19:19,001 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:19:19,003 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 06:19:19,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 06:19:19,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 06:19:19,004 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-01-21 06:19:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:19:19,092 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-01-21 06:19:19,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 06:19:19,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-21 06:19:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:19:19,094 INFO L225 Difference]: With dead ends: 77 [2018-01-21 06:19:19,095 INFO L226 Difference]: Without dead ends: 58 [2018-01-21 06:19:19,096 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 06:19:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-21 06:19:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-01-21 06:19:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 06:19:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-01-21 06:19:19,103 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 29 [2018-01-21 06:19:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:19:19,104 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-01-21 06:19:19,104 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 06:19:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-01-21 06:19:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-21 06:19:19,106 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:19:19,106 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 06:19:19,106 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:19:19,106 INFO L82 PathProgramCache]: Analyzing trace with hash 853755939, now seen corresponding path program 1 times [2018-01-21 06:19:19,107 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:19:19,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:19:19,108 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:19:19,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:19:19,108 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:19:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:19:19,138 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:19:19,566 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 06:19:19,567 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 06:19:19,567 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 06:19:19,568 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-01-21 06:19:19,571 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 06:19:19,635 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 06:19:19,635 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