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/list_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:46:16,054 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:46:16,056 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:46:16,071 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:46:16,072 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:46:16,073 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:46:16,074 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:46:16,076 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:46:16,078 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:46:16,079 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:46:16,080 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:46:16,080 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:46:16,081 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:46:16,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:46:16,084 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:46:16,086 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:46:16,088 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:46:16,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:46:16,092 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:46:16,093 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:46:16,096 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 10:46:16,096 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 10:46:16,096 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 10:46:16,097 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 10:46:16,098 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 10:46:16,100 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 10:46:16,100 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 10:46:16,101 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 10:46:16,101 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 10:46:16,101 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:46:16,102 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:46:16,102 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 10:46:16,112 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:46:16,112 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:46:16,113 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:46:16,113 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:46:16,114 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:46:16,114 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:46:16,114 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:46:16,114 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:46:16,115 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:46:16,115 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:46:16,115 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:46:16,115 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:46:16,115 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:46:16,116 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:46:16,116 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:46:16,116 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:46:16,116 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:46:16,116 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:46:16,116 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:46:16,117 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:46:16,117 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:46:16,117 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:46:16,117 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:46:16,117 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:46:16,118 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:46:16,118 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:46:16,118 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:46:16,118 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:46:16,118 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:46:16,119 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:46:16,119 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:46:16,119 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:46:16,119 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:46:16,119 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:46:16,119 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:46:16,120 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:46:16,120 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:46:16,121 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:46:16,121 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:46:16,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:46:16,168 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:46:16,172 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:46:16,174 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:46:16,174 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:46:16,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-01-21 10:46:16,338 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:46:16,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:46:16,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:46:16,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:46:16,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:46:16,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655b3dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16, skipping insertion in model container [2018-01-21 10:46:16,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,377 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:46:16,418 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:46:16,560 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:46:16,577 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:46:16,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16 WrapperNode [2018-01-21 10:46:16,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:46:16,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:46:16,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:46:16,585 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:46:16,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (1/1) ... [2018-01-21 10:46:16,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:46:16,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:46:16,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:46:16,629 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:46:16,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (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 10:46:16,691 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:46:16,691 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:46:16,692 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 10:46:16,692 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:46:16,692 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:46:16,692 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:46:16,692 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 10:46:16,692 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 10:46:16,692 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:46:16,693 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:46:16,693 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:46:16,693 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 10:46:16,693 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:46:16,693 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:46:16,693 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 10:46:16,694 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:46:16,694 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:46:16,694 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:46:16,915 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:46:16,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:46:16 BoogieIcfgContainer [2018-01-21 10:46:16,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:46:16,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:46:16,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:46:16,918 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:46:16,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:46:16" (1/3) ... [2018-01-21 10:46:16,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30eef63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:46:16, skipping insertion in model container [2018-01-21 10:46:16,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:46:16" (2/3) ... [2018-01-21 10:46:16,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30eef63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:46:16, skipping insertion in model container [2018-01-21 10:46:16,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:46:16" (3/3) ... [2018-01-21 10:46:16,921 INFO L105 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-01-21 10:46:16,928 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:46:16,934 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 10:46:16,983 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:46:16,984 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:46:16,984 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:46:16,984 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:46:16,984 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:46:16,984 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:46:16,984 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:46:16,985 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 10:46:16,985 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:46:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 10:46:17,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:46:17,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 57 states. [2018-01-21 10:46:17,094 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 10:46:17,095 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-21 10:46:17,095 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-21 10:46:17,095 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-21 10:46:17,095 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-21 10:46:17,095 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 654) no Hoare annotation was computed. [2018-01-21 10:46:17,096 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 654) no Hoare annotation was computed. [2018-01-21 10:46:17,096 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 654) the Hoare annotation is: true [2018-01-21 10:46:17,096 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 654) no Hoare annotation was computed. [2018-01-21 10:46:17,096 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 654) the Hoare annotation is: true [2018-01-21 10:46:17,096 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 654) no Hoare annotation was computed. [2018-01-21 10:46:17,097 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 654) the Hoare annotation is: true [2018-01-21 10:46:17,097 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 654) no Hoare annotation was computed. [2018-01-21 10:46:17,097 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 654) no Hoare annotation was computed. [2018-01-21 10:46:17,097 INFO L401 ceAbstractionStarter]: For program point L650'(line 650) no Hoare annotation was computed. [2018-01-21 10:46:17,097 INFO L401 ceAbstractionStarter]: For program point L627(line 627) no Hoare annotation was computed. [2018-01-21 10:46:17,097 INFO L401 ceAbstractionStarter]: For program point L649'''(lines 649 650) no Hoare annotation was computed. [2018-01-21 10:46:17,097 INFO L401 ceAbstractionStarter]: For program point L647'(line 647) no Hoare annotation was computed. [2018-01-21 10:46:17,098 INFO L401 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-01-21 10:46:17,098 INFO L401 ceAbstractionStarter]: For program point L638''''(lines 638 644) no Hoare annotation was computed. [2018-01-21 10:46:17,098 INFO L401 ceAbstractionStarter]: For program point L651''(lines 651 652) no Hoare annotation was computed. [2018-01-21 10:46:17,098 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 654) no Hoare annotation was computed. [2018-01-21 10:46:17,098 INFO L401 ceAbstractionStarter]: For program point L648'(line 648) no Hoare annotation was computed. [2018-01-21 10:46:17,098 INFO L401 ceAbstractionStarter]: For program point L641(line 641) no Hoare annotation was computed. [2018-01-21 10:46:17,098 INFO L401 ceAbstractionStarter]: For program point L640(line 640) no Hoare annotation was computed. [2018-01-21 10:46:17,098 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-21 10:46:17,099 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 10:46:17,099 INFO L401 ceAbstractionStarter]: For program point L642(line 642) no Hoare annotation was computed. [2018-01-21 10:46:17,099 INFO L401 ceAbstractionStarter]: For program point L649(lines 649 650) no Hoare annotation was computed. [2018-01-21 10:46:17,099 INFO L401 ceAbstractionStarter]: For program point L648(line 648) no Hoare annotation was computed. [2018-01-21 10:46:17,099 INFO L401 ceAbstractionStarter]: For program point L628'''(line 628) no Hoare annotation was computed. [2018-01-21 10:46:17,099 INFO L401 ceAbstractionStarter]: For program point L647(lines 647 648) no Hoare annotation was computed. [2018-01-21 10:46:17,099 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 654) no Hoare annotation was computed. [2018-01-21 10:46:17,100 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-21 10:46:17,100 INFO L401 ceAbstractionStarter]: For program point L633(line 633) no Hoare annotation was computed. [2018-01-21 10:46:17,100 INFO L401 ceAbstractionStarter]: For program point L632(line 632) no Hoare annotation was computed. [2018-01-21 10:46:17,100 INFO L401 ceAbstractionStarter]: For program point L631(lines 631 637) no Hoare annotation was computed. [2018-01-21 10:46:17,100 INFO L401 ceAbstractionStarter]: For program point L638(lines 638 644) no Hoare annotation was computed. [2018-01-21 10:46:17,100 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-21 10:46:17,100 INFO L401 ceAbstractionStarter]: For program point L635(line 635) no Hoare annotation was computed. [2018-01-21 10:46:17,101 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-21 10:46:17,101 INFO L404 ceAbstractionStarter]: At program point L634'(line 634) the Hoare annotation is: true [2018-01-21 10:46:17,101 INFO L401 ceAbstractionStarter]: For program point L634'''(line 634) no Hoare annotation was computed. [2018-01-21 10:46:17,101 INFO L401 ceAbstractionStarter]: For program point L631'(lines 631 637) no Hoare annotation was computed. [2018-01-21 10:46:17,101 INFO L404 ceAbstractionStarter]: At program point L631'''(lines 631 637) the Hoare annotation is: true [2018-01-21 10:46:17,101 INFO L401 ceAbstractionStarter]: For program point L639'(line 639) no Hoare annotation was computed. [2018-01-21 10:46:17,102 INFO L401 ceAbstractionStarter]: For program point L652(line 652) no Hoare annotation was computed. [2018-01-21 10:46:17,102 INFO L401 ceAbstractionStarter]: For program point L651(line 651) no Hoare annotation was computed. [2018-01-21 10:46:17,102 INFO L401 ceAbstractionStarter]: For program point L650(line 650) no Hoare annotation was computed. [2018-01-21 10:46:17,102 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 654) no Hoare annotation was computed. [2018-01-21 10:46:17,102 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 654) the Hoare annotation is: true [2018-01-21 10:46:17,102 INFO L401 ceAbstractionStarter]: For program point L632'(line 632) no Hoare annotation was computed. [2018-01-21 10:46:17,103 INFO L404 ceAbstractionStarter]: At program point L628'(line 628) the Hoare annotation is: true [2018-01-21 10:46:17,103 INFO L404 ceAbstractionStarter]: At program point L647'''(lines 647 648) the Hoare annotation is: true [2018-01-21 10:46:17,103 INFO L401 ceAbstractionStarter]: For program point L649'(line 649) no Hoare annotation was computed. [2018-01-21 10:46:17,103 INFO L404 ceAbstractionStarter]: At program point L641'(line 641) the Hoare annotation is: true [2018-01-21 10:46:17,103 INFO L401 ceAbstractionStarter]: For program point L638'(lines 638 644) no Hoare annotation was computed. [2018-01-21 10:46:17,103 INFO L401 ceAbstractionStarter]: For program point L638'''(lines 638 644) no Hoare annotation was computed. [2018-01-21 10:46:17,103 INFO L401 ceAbstractionStarter]: For program point L641'''(line 641) no Hoare annotation was computed. [2018-01-21 10:46:17,104 INFO L401 ceAbstractionStarter]: For program point L649''''(lines 649 650) no Hoare annotation was computed. [2018-01-21 10:46:17,108 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:46:17,108 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:46:17,108 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:46:17,108 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:46:17,109 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:46:17,109 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:46:17,109 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:46:17,109 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:46:17,109 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:46:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 10:46:17,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:46:17,113 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:46:17,114 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:46:17,114 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:46:17,120 INFO L82 PathProgramCache]: Analyzing trace with hash 154495, now seen corresponding path program 1 times [2018-01-21 10:46:17,123 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:46:17,144 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:46:17,145 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:46:17,145 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:46:17,145 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:46:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:46:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:46:17,197 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:46:17,202 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:46:17,208 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:46:17,208 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:46:17,208 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:46:17,209 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:46:17,209 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:46:17,209 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:46:17,209 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:46:17,209 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:46:17,209 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:46:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 10:46:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 10:46:17,214 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:46:17,214 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 10:46:17,214 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:46:17,215 INFO L82 PathProgramCache]: Analyzing trace with hash 748584202, now seen corresponding path program 1 times [2018-01-21 10:46:17,215 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:46:17,216 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:46:17,217 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:46:17,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:46:17,217 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:46:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:46:17,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:46:17,273 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 10:46:17,274 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:46:17,275 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:46:17,275 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:46:17,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:46:17,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:46:17,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:46:17,355 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-01-21 10:46:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:46:17,376 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2018-01-21 10:46:17,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:46:17,378 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-21 10:46:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:46:17,387 INFO L225 Difference]: With dead ends: 92 [2018-01-21 10:46:17,387 INFO L226 Difference]: Without dead ends: 48 [2018-01-21 10:46:17,390 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 10:46:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-21 10:46:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-01-21 10:46:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-21 10:46:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-01-21 10:46:17,418 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 21 [2018-01-21 10:46:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:46:17,418 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-01-21 10:46:17,418 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:46:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-01-21 10:46:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 10:46:17,419 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:46:17,419 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 10:46:17,419 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:46:17,420 INFO L82 PathProgramCache]: Analyzing trace with hash 482191050, now seen corresponding path program 1 times [2018-01-21 10:46:17,420 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:46:17,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:46:17,421 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:46:17,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:46:17,421 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:46:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:46:17,444 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:46:17,521 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 10:46:17,522 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:46:17,522 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 10:46:17,522 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:46:17,524 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:46:17,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:46:17,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 10:46:17,525 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-01-21 10:46:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:46:17,619 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-01-21 10:46:17,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 10:46:17,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-21 10:46:17,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:46:17,622 INFO L225 Difference]: With dead ends: 77 [2018-01-21 10:46:17,622 INFO L226 Difference]: Without dead ends: 58 [2018-01-21 10:46:17,623 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 10:46:17,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-21 10:46:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-01-21 10:46:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 10:46:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-01-21 10:46:17,631 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 29 [2018-01-21 10:46:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:46:17,631 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-01-21 10:46:17,631 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:46:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-01-21 10:46:17,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-21 10:46:17,633 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:46:17,633 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 10:46:17,633 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:46:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash 853755939, now seen corresponding path program 1 times [2018-01-21 10:46:17,634 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:46:17,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:46:17,635 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:46:17,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:46:17,635 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:46:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:46:17,659 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:46:18,100 WARN L146 SmtUtils]: Spent 106ms on a formula simplification. DAG size of input: 27 DAG size of output 24 [2018-01-21 10:46:18,194 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 10:46:18,194 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:46:18,195 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:46:18,196 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-01-21 10:46:18,198 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 10:46:18,256 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:46:18,256 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 10:47:22,328 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 10:47:22,329 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 10:47:22,330 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:47:22,330 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:47:22,330 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 10:47:22,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:47:22,336 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:47:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:47:22,365 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:47:22,370 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 10:47:22,370 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:47:22,372 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:47:22,372 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:47:22,372 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:47:22,372 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:47:22,372 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:47:22,373 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:47:22,373 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:47:22,373 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:47:22,373 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:47:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 10:47:22,375 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:47:22,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:47:22 BoogieIcfgContainer [2018-01-21 10:47:22,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:47:22,377 INFO L168 Benchmark]: Toolchain (without parser) took 66038.13 ms. Allocated memory was 304.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 263.0 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 872.3 MB. Max. memory is 5.3 GB. [2018-01-21 10:47:22,379 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 304.1 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:47:22,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.54 ms. Allocated memory is still 304.1 MB. Free memory was 263.0 MB in the beginning and 253.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:47:22,379 INFO L168 Benchmark]: Boogie Preprocessor took 43.39 ms. Allocated memory is still 304.1 MB. Free memory was 253.0 MB in the beginning and 251.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:47:22,380 INFO L168 Benchmark]: RCFGBuilder took 286.92 ms. Allocated memory is still 304.1 MB. Free memory was 251.0 MB in the beginning and 230.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 5.3 GB. [2018-01-21 10:47:22,380 INFO L168 Benchmark]: TraceAbstraction took 65459.73 ms. Allocated memory was 304.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 230.1 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 839.4 MB. Max. memory is 5.3 GB. [2018-01-21 10:47:22,382 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 304.1 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 239.54 ms. Allocated memory is still 304.1 MB. Free memory was 263.0 MB in the beginning and 253.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 43.39 ms. Allocated memory is still 304.1 MB. Free memory was 253.0 MB in the beginning and 251.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 286.92 ms. Allocated memory is still 304.1 MB. Free memory was 251.0 MB in the beginning and 230.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 65459.73 ms. Allocated memory was 304.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 230.1 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 839.4 MB. 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, 60 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=57occurred 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, 10 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 10 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 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, 60 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=57occurred 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 40 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, 60 locations, 4 error locations. TIMEOUT Result, 65.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 109 SDtfs, 10 SDslu, 77 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 3004 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 57 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 60 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=57occurred 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/list_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-47-22-391.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-47-22-391.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-47-22-391.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-47-22-391.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-47-22-391.csv Completed graceful shutdown