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_smtcomp.epf -i ../../../trunk/examples/svcomp/list-properties/simple_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:47:12,835 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:47:12,837 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:47:12,851 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:47:12,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:47:12,853 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:47:12,854 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:47:12,855 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:47:12,857 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:47:12,858 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:47:12,859 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:47:12,859 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:47:12,860 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:47:12,862 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:47:12,863 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:47:12,865 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:47:12,867 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:47:12,869 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:47:12,871 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:47:12,872 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:47:12,874 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 10:47:12,874 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 10:47:12,874 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 10:47:12,875 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 10:47:12,875 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 10:47:12,876 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 10:47:12,876 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 10:47:12,877 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 10:47:12,877 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 10:47:12,877 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:47:12,877 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:47:12,878 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_smtcomp.epf [2018-01-21 10:47:12,884 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:47:12,884 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:47:12,885 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:47:12,885 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:47:12,885 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:47:12,885 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:47:12,885 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:47:12,886 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:47:12,886 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:47:12,886 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:47:12,886 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:47:12,886 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:47:12,886 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:47:12,886 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:47:12,887 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:47:12,887 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:47:12,887 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:47:12,887 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:47:12,887 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:47:12,887 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:47:12,887 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:47:12,887 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:47:12,888 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:47:12,888 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:47:12,888 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:47:12,888 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:47:12,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:47:12,888 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:47:12,888 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:47:12,888 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:47:12,888 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:47:12,889 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:47:12,889 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:47:12,889 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:47:12,889 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:47:12,889 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:47:12,889 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:47:12,890 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:47:12,890 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:47:12,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:47:12,937 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:47:12,941 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:47:12,943 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:47:12,943 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:47:12,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-01-21 10:47:13,101 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:47:13,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:47:13,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:47:13,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:47:13,111 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:47:13,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,114 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 10:47:13, skipping insertion in model container [2018-01-21 10:47:13,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,128 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:47:13,167 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:47:13,283 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:47:13,298 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:47:13,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13 WrapperNode [2018-01-21 10:47:13,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:47:13,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:47:13,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:47:13,306 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:47:13,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (1/1) ... [2018-01-21 10:47:13,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:47:13,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:47:13,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:47:13,347 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:47:13,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (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 10:47:13,408 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:47:13,408 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:47:13,408 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 10:47:13,408 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:47:13,409 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:47:13,409 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:47:13,409 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 10:47:13,409 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 10:47:13,409 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:47:13,409 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:47:13,409 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:47:13,410 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 10:47:13,410 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:47:13,410 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:47:13,410 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 10:47:13,410 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:47:13,411 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:47:13,411 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:47:13,597 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:47:13,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:47:13 BoogieIcfgContainer [2018-01-21 10:47:13,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:47:13,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:47:13,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:47:13,600 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:47:13,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:47:13" (1/3) ... [2018-01-21 10:47:13,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68322e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:47:13, skipping insertion in model container [2018-01-21 10:47:13,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:47:13" (2/3) ... [2018-01-21 10:47:13,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68322e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:47:13, skipping insertion in model container [2018-01-21 10:47:13,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:47:13" (3/3) ... [2018-01-21 10:47:13,603 INFO L105 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-01-21 10:47:13,610 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:47:13,615 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 10:47:13,663 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:47:13,663 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:47:13,663 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:47:13,663 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:47:13,663 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:47:13,664 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:47:13,664 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:47:13,664 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 10:47:13,665 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:47:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 10:47:13,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:47:13,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 41 states. [2018-01-21 10:47:13,767 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 10:47:13,767 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-21 10:47:13,768 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-21 10:47:13,768 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-21 10:47:13,768 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-21 10:47:13,768 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 648) no Hoare annotation was computed. [2018-01-21 10:47:13,768 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 648) no Hoare annotation was computed. [2018-01-21 10:47:13,768 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 648) the Hoare annotation is: true [2018-01-21 10:47:13,769 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 648) no Hoare annotation was computed. [2018-01-21 10:47:13,769 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 648) the Hoare annotation is: true [2018-01-21 10:47:13,769 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 648) no Hoare annotation was computed. [2018-01-21 10:47:13,769 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 648) the Hoare annotation is: true [2018-01-21 10:47:13,769 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 648) no Hoare annotation was computed. [2018-01-21 10:47:13,769 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 648) no Hoare annotation was computed. [2018-01-21 10:47:13,770 INFO L401 ceAbstractionStarter]: For program point L627(line 627) no Hoare annotation was computed. [2018-01-21 10:47:13,770 INFO L401 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-01-21 10:47:13,770 INFO L401 ceAbstractionStarter]: For program point L631'(lines 631 637) no Hoare annotation was computed. [2018-01-21 10:47:13,770 INFO L404 ceAbstractionStarter]: At program point L631'''(lines 631 637) the Hoare annotation is: true [2018-01-21 10:47:13,770 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 648) no Hoare annotation was computed. [2018-01-21 10:47:13,770 INFO L401 ceAbstractionStarter]: For program point L642'''(lines 642 644) no Hoare annotation was computed. [2018-01-21 10:47:13,770 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 648) no Hoare annotation was computed. [2018-01-21 10:47:13,771 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 648) the Hoare annotation is: true [2018-01-21 10:47:13,771 INFO L401 ceAbstractionStarter]: For program point L632'(line 632) no Hoare annotation was computed. [2018-01-21 10:47:13,771 INFO L401 ceAbstractionStarter]: For program point L631''''(lines 631 637) no Hoare annotation was computed. [2018-01-21 10:47:13,771 INFO L404 ceAbstractionStarter]: At program point L628'(line 628) the Hoare annotation is: true [2018-01-21 10:47:13,771 INFO L401 ceAbstractionStarter]: For program point L641(lines 641 646) no Hoare annotation was computed. [2018-01-21 10:47:13,771 INFO L404 ceAbstractionStarter]: At program point L641''(lines 641 646) the Hoare annotation is: true [2018-01-21 10:47:13,772 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-21 10:47:13,772 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 10:47:13,772 INFO L401 ceAbstractionStarter]: For program point L642(line 642) no Hoare annotation was computed. [2018-01-21 10:47:13,772 INFO L401 ceAbstractionStarter]: For program point L628'''(line 628) no Hoare annotation was computed. [2018-01-21 10:47:13,772 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 648) no Hoare annotation was computed. [2018-01-21 10:47:13,772 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-21 10:47:13,773 INFO L401 ceAbstractionStarter]: For program point L633(line 633) no Hoare annotation was computed. [2018-01-21 10:47:13,773 INFO L401 ceAbstractionStarter]: For program point L632(line 632) no Hoare annotation was computed. [2018-01-21 10:47:13,773 INFO L401 ceAbstractionStarter]: For program point L631(lines 631 637) no Hoare annotation was computed. [2018-01-21 10:47:13,773 INFO L401 ceAbstractionStarter]: For program point L638(line 638) no Hoare annotation was computed. [2018-01-21 10:47:13,773 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-21 10:47:13,773 INFO L401 ceAbstractionStarter]: For program point L635(line 635) no Hoare annotation was computed. [2018-01-21 10:47:13,773 INFO L401 ceAbstractionStarter]: For program point L641'''(lines 641 646) no Hoare annotation was computed. [2018-01-21 10:47:13,774 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-21 10:47:13,774 INFO L404 ceAbstractionStarter]: At program point L634'(line 634) the Hoare annotation is: true [2018-01-21 10:47:13,774 INFO L401 ceAbstractionStarter]: For program point L642'(line 642) no Hoare annotation was computed. [2018-01-21 10:47:13,774 INFO L401 ceAbstractionStarter]: For program point L634'''(line 634) no Hoare annotation was computed. [2018-01-21 10:47:13,778 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:47:13,779 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:47:13,779 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:47:13,779 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:47:13,779 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:47:13,779 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:47:13,779 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:47:13,779 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:47:13,779 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:47:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 10:47:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:47:13,782 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:47:13,783 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:47:13,783 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:47:13,788 INFO L82 PathProgramCache]: Analyzing trace with hash 111860, now seen corresponding path program 1 times [2018-01-21 10:47:13,791 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:47:13,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:13,814 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:47:13,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:13,814 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:47:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:47:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:47:13,871 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:47:13,875 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:47:13,879 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:47:13,879 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:47:13,879 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:47:13,879 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:47:13,880 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:47:13,880 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:47:13,880 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:47:13,880 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:47:13,880 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:47:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 10:47:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 10:47:13,883 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:47:13,883 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:47:13,883 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:47:13,884 INFO L82 PathProgramCache]: Analyzing trace with hash 531101053, now seen corresponding path program 1 times [2018-01-21 10:47:13,884 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:47:13,885 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:13,885 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:47:13,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:13,886 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:47:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:47:13,907 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:47:13,940 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 10:47:13,942 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:47:13,942 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:47:13,942 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:47:13,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:47:13,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:47:13,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:47:13,956 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-21 10:47:14,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:47:14,040 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-01-21 10:47:14,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:47:14,042 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 10:47:14,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:47:14,049 INFO L225 Difference]: With dead ends: 58 [2018-01-21 10:47:14,049 INFO L226 Difference]: Without dead ends: 33 [2018-01-21 10:47:14,052 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 10:47:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-21 10:47:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-21 10:47:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-21 10:47:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-01-21 10:47:14,080 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 18 [2018-01-21 10:47:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:47:14,081 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-01-21 10:47:14,081 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:47:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-01-21 10:47:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 10:47:14,082 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:47:14,082 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 10:47:14,082 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:47:14,082 INFO L82 PathProgramCache]: Analyzing trace with hash 403826474, now seen corresponding path program 1 times [2018-01-21 10:47:14,082 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:47:14,084 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:14,084 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:47:14,084 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:14,084 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:47:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:47:14,109 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:47:14,185 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 10:47:14,185 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:47:14,185 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 10:47:14,186 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:47:14,187 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:47:14,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:47:14,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 10:47:14,188 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2018-01-21 10:47:14,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:47:14,345 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-01-21 10:47:14,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 10:47:14,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-21 10:47:14,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:47:14,347 INFO L225 Difference]: With dead ends: 57 [2018-01-21 10:47:14,347 INFO L226 Difference]: Without dead ends: 52 [2018-01-21 10:47:14,348 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 10:47:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-21 10:47:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 35. [2018-01-21 10:47:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 10:47:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-01-21 10:47:14,354 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 21 [2018-01-21 10:47:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:47:14,355 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-01-21 10:47:14,355 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:47:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-01-21 10:47:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 10:47:14,355 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:47:14,355 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 10:47:14,356 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:47:14,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1062535480, now seen corresponding path program 1 times [2018-01-21 10:47:14,356 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:47:14,357 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:14,357 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:47:14,357 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:14,357 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:47:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:47:14,373 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:47:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 10:47:14,414 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:47:14,415 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 10:47:14,415 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:47:14,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:47:14,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:47:14,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 10:47:14,416 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 4 states. [2018-01-21 10:47:14,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:47:14,446 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-01-21 10:47:14,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 10:47:14,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 10:47:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:47:14,448 INFO L225 Difference]: With dead ends: 56 [2018-01-21 10:47:14,448 INFO L226 Difference]: Without dead ends: 40 [2018-01-21 10:47:14,449 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 10:47:14,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-21 10:47:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-01-21 10:47:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-21 10:47:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-01-21 10:47:14,455 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 27 [2018-01-21 10:47:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:47:14,456 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-01-21 10:47:14,456 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:47:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-01-21 10:47:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 10:47:14,457 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:47:14,457 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:47:14,457 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:47:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash -571757697, now seen corresponding path program 1 times [2018-01-21 10:47:14,458 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:47:14,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:14,459 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:47:14,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:47:14,459 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:47:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:47:14,487 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:47:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 10:47:14,629 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:47:14,629 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:47:14,630 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-21 10:47:14,632 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [9], [13], [15], [18], [20], [21], [22], [23], [29], [31], [32], [33], [37], [38], [39], [43], [47], [49], [50], [57], [59], [60], [64], [65], [72], [73], [78], [83], [84], [85], [86] [2018-01-21 10:47:14,679 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:47:14,679 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 10:48:15,886 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 10:48:15,887 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 10:48:15,888 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:48:15,888 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:48:15,888 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 10:48:15,894 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:48:15,894 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:48:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:48:15,930 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:48:15,935 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 10:48:15,936 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:48:15,937 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:48:15,938 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:48:15,938 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:48:15,938 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:48:15,938 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:48:15,938 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:48:15,938 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:48:15,939 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:48:15,939 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:48:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 10:48:15,940 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:48:15,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:48:15 BoogieIcfgContainer [2018-01-21 10:48:15,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:48:15,941 INFO L168 Benchmark]: Toolchain (without parser) took 62839.94 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 264.5 MB in the beginning and 1.2 GB in the end (delta: -955.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-21 10:48:15,942 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 304.6 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:48:15,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.11 ms. Allocated memory is still 304.6 MB. Free memory was 263.5 MB in the beginning and 253.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:48:15,943 INFO L168 Benchmark]: Boogie Preprocessor took 40.59 ms. Allocated memory is still 304.6 MB. Free memory was 253.5 MB in the beginning and 251.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:48:15,943 INFO L168 Benchmark]: RCFGBuilder took 250.99 ms. Allocated memory is still 304.6 MB. Free memory was 251.5 MB in the beginning and 234.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:48:15,943 INFO L168 Benchmark]: TraceAbstraction took 62342.02 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 233.5 MB in the beginning and 1.2 GB in the end (delta: -986.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-21 10:48:15,945 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 304.6 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 199.11 ms. Allocated memory is still 304.6 MB. Free memory was 263.5 MB in the beginning and 253.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.59 ms. Allocated memory is still 304.6 MB. Free memory was 253.5 MB in the beginning and 251.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 250.99 ms. Allocated memory is still 304.6 MB. Free memory was 251.5 MB in the beginning and 234.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 62342.02 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 233.5 MB in the beginning and 1.2 GB in the end (delta: -986.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 525]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: exitErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. SAFE Result, 0.1s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 9 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. TIMEOUT Result, 62.0s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 96 SDtfs, 95 SDslu, 79 SDs, 0 SdLazy, 42 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 61.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 626]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 626). Cancelled while IsEmpty was searching accepting run (input had 41 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-48-15-951.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-48-15-951.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-48-15-951.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-48-15-951.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-48-15-951.csv Completed graceful shutdown