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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:51:37,923 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:51:37,925 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:51:37,940 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:51:37,940 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:51:37,941 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:51:37,942 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:51:37,944 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:51:37,946 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:51:37,947 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:51:37,948 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:51:37,948 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:51:37,949 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:51:37,950 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:51:37,951 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:51:37,954 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:51:37,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:51:37,958 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:51:37,959 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:51:37,960 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:51:37,962 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-23 14:51:37,963 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-23 14:51:37,963 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-23 14:51:37,964 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-23 14:51:37,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-23 14:51:37,966 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-23 14:51:37,966 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-23 14:51:37,967 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-23 14:51:37,967 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-23 14:51:37,968 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:51:37,968 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:51:37,969 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:51:37,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:51:37,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:51:37,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:51:37,978 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:51:37,978 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:51:37,978 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:51:37,978 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:51:37,979 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:51:37,979 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:51:37,979 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:51:37,979 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:51:37,979 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:51:37,979 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:51:37,980 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:51:37,980 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:51:37,980 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:51:37,980 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:51:37,980 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:51:37,980 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:51:37,980 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:51:37,980 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:51:37,981 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:51:37,981 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:51:37,981 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:51:37,981 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:51:37,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:51:37,982 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:51:37,982 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:51:37,982 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:51:37,982 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:51:37,982 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:51:37,982 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:51:37,982 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:51:37,982 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:51:37,982 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:51:37,983 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:51:37,983 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:51:38,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:51:38,028 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:51:38,031 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:51:38,032 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:51:38,033 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:51:38,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-01-23 14:51:38,205 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:51:38,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:51:38,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:51:38,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:51:38,216 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:51:38,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533d743e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38, skipping insertion in model container [2018-01-23 14:51:38,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,234 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:51:38,273 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:51:38,394 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:51:38,413 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:51:38,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38 WrapperNode [2018-01-23 14:51:38,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:51:38,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:51:38,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:51:38,434 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:51:38,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (1/1) ... [2018-01-23 14:51:38,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:51:38,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:51:38,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:51:38,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:51:38,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (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 [2018-01-23 14:51:38,522 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:51:38,522 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:51:38,522 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-23 14:51:38,522 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:51:38,523 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:51:38,523 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:51:38,523 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-23 14:51:38,523 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-23 14:51:38,523 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:51:38,523 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:51:38,524 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:51:38,524 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-23 14:51:38,524 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:51:38,524 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-23 14:51:38,524 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-23 14:51:38,524 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:51:38,525 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:51:38,525 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:51:38,746 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:51:38,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:51:38 BoogieIcfgContainer [2018-01-23 14:51:38,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:51:38,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:51:38,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:51:38,749 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:51:38,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:51:38" (1/3) ... [2018-01-23 14:51:38,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f24934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:51:38, skipping insertion in model container [2018-01-23 14:51:38,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:51:38" (2/3) ... [2018-01-23 14:51:38,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f24934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:51:38, skipping insertion in model container [2018-01-23 14:51:38,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:51:38" (3/3) ... [2018-01-23 14:51:38,752 INFO L105 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-01-23 14:51:38,758 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:51:38,764 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-23 14:51:38,805 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:51:38,805 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:51:38,805 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:51:38,806 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:51:38,806 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:51:38,806 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:51:38,806 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:51:38,806 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-23 14:51:38,807 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:51:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-23 14:51:38,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:51:38,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 57 states. [2018-01-23 14:51:38,919 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-23 14:51:38,919 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-23 14:51:38,920 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-23 14:51:38,920 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-23 14:51:38,920 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-23 14:51:38,920 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 654) no Hoare annotation was computed. [2018-01-23 14:51:38,920 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 654) no Hoare annotation was computed. [2018-01-23 14:51:38,920 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 654) the Hoare annotation is: true [2018-01-23 14:51:38,920 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 654) no Hoare annotation was computed. [2018-01-23 14:51:38,921 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 654) the Hoare annotation is: true [2018-01-23 14:51:38,921 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 654) no Hoare annotation was computed. [2018-01-23 14:51:38,921 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 654) the Hoare annotation is: true [2018-01-23 14:51:38,921 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 654) no Hoare annotation was computed. [2018-01-23 14:51:38,921 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 654) no Hoare annotation was computed. [2018-01-23 14:51:38,922 INFO L401 ceAbstractionStarter]: For program point L650'(line 650) no Hoare annotation was computed. [2018-01-23 14:51:38,922 INFO L401 ceAbstractionStarter]: For program point L627(line 627) no Hoare annotation was computed. [2018-01-23 14:51:38,922 INFO L401 ceAbstractionStarter]: For program point L649'''(lines 649 650) no Hoare annotation was computed. [2018-01-23 14:51:38,922 INFO L401 ceAbstractionStarter]: For program point L647'(line 647) no Hoare annotation was computed. [2018-01-23 14:51:38,922 INFO L401 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-01-23 14:51:38,922 INFO L401 ceAbstractionStarter]: For program point L638''''(lines 638 644) no Hoare annotation was computed. [2018-01-23 14:51:38,922 INFO L401 ceAbstractionStarter]: For program point L651''(lines 651 652) no Hoare annotation was computed. [2018-01-23 14:51:38,923 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 654) no Hoare annotation was computed. [2018-01-23 14:51:38,923 INFO L401 ceAbstractionStarter]: For program point L648'(line 648) no Hoare annotation was computed. [2018-01-23 14:51:38,923 INFO L401 ceAbstractionStarter]: For program point L641(line 641) no Hoare annotation was computed. [2018-01-23 14:51:38,923 INFO L401 ceAbstractionStarter]: For program point L640(line 640) no Hoare annotation was computed. [2018-01-23 14:51:38,923 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-23 14:51:38,923 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-23 14:51:38,923 INFO L401 ceAbstractionStarter]: For program point L642(line 642) no Hoare annotation was computed. [2018-01-23 14:51:38,923 INFO L401 ceAbstractionStarter]: For program point L649(lines 649 650) no Hoare annotation was computed. [2018-01-23 14:51:38,924 INFO L401 ceAbstractionStarter]: For program point L648(line 648) no Hoare annotation was computed. [2018-01-23 14:51:38,924 INFO L401 ceAbstractionStarter]: For program point L628'''(line 628) no Hoare annotation was computed. [2018-01-23 14:51:38,924 INFO L401 ceAbstractionStarter]: For program point L647(lines 647 648) no Hoare annotation was computed. [2018-01-23 14:51:38,924 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 654) no Hoare annotation was computed. [2018-01-23 14:51:38,924 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-23 14:51:38,924 INFO L401 ceAbstractionStarter]: For program point L633(line 633) no Hoare annotation was computed. [2018-01-23 14:51:38,925 INFO L401 ceAbstractionStarter]: For program point L632(line 632) no Hoare annotation was computed. [2018-01-23 14:51:38,925 INFO L401 ceAbstractionStarter]: For program point L631(lines 631 637) no Hoare annotation was computed. [2018-01-23 14:51:38,925 INFO L401 ceAbstractionStarter]: For program point L638(lines 638 644) no Hoare annotation was computed. [2018-01-23 14:51:38,925 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-23 14:51:38,925 INFO L401 ceAbstractionStarter]: For program point L635(line 635) no Hoare annotation was computed. [2018-01-23 14:51:38,925 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-23 14:51:38,925 INFO L404 ceAbstractionStarter]: At program point L634'(line 634) the Hoare annotation is: true [2018-01-23 14:51:38,926 INFO L401 ceAbstractionStarter]: For program point L634'''(line 634) no Hoare annotation was computed. [2018-01-23 14:51:38,926 INFO L401 ceAbstractionStarter]: For program point L631'(lines 631 637) no Hoare annotation was computed. [2018-01-23 14:51:38,926 INFO L404 ceAbstractionStarter]: At program point L631'''(lines 631 637) the Hoare annotation is: true [2018-01-23 14:51:38,926 INFO L401 ceAbstractionStarter]: For program point L639'(line 639) no Hoare annotation was computed. [2018-01-23 14:51:38,926 INFO L401 ceAbstractionStarter]: For program point L652(line 652) no Hoare annotation was computed. [2018-01-23 14:51:38,926 INFO L401 ceAbstractionStarter]: For program point L651(line 651) no Hoare annotation was computed. [2018-01-23 14:51:38,927 INFO L401 ceAbstractionStarter]: For program point L650(line 650) no Hoare annotation was computed. [2018-01-23 14:51:38,927 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 654) no Hoare annotation was computed. [2018-01-23 14:51:38,927 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 654) the Hoare annotation is: true [2018-01-23 14:51:38,927 INFO L401 ceAbstractionStarter]: For program point L632'(line 632) no Hoare annotation was computed. [2018-01-23 14:51:38,927 INFO L404 ceAbstractionStarter]: At program point L628'(line 628) the Hoare annotation is: true [2018-01-23 14:51:38,927 INFO L404 ceAbstractionStarter]: At program point L647'''(lines 647 648) the Hoare annotation is: true [2018-01-23 14:51:38,928 INFO L401 ceAbstractionStarter]: For program point L649'(line 649) no Hoare annotation was computed. [2018-01-23 14:51:38,928 INFO L404 ceAbstractionStarter]: At program point L641'(line 641) the Hoare annotation is: true [2018-01-23 14:51:38,928 INFO L401 ceAbstractionStarter]: For program point L638'(lines 638 644) no Hoare annotation was computed. [2018-01-23 14:51:38,928 INFO L401 ceAbstractionStarter]: For program point L638'''(lines 638 644) no Hoare annotation was computed. [2018-01-23 14:51:38,928 INFO L401 ceAbstractionStarter]: For program point L641'''(line 641) no Hoare annotation was computed. [2018-01-23 14:51:38,928 INFO L401 ceAbstractionStarter]: For program point L649''''(lines 649 650) no Hoare annotation was computed. [2018-01-23 14:51:38,933 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:51:38,933 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:51:38,933 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:51:38,933 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:51:38,934 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:51:38,934 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:51:38,934 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:51:38,934 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:51:38,934 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:51:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-23 14:51:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:51:38,938 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:51:38,939 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:51:38,939 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:51:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash 154495, now seen corresponding path program 1 times [2018-01-23 14:51:38,946 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:51:38,947 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:51:38,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:38,969 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:38,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:51:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:51:39,020 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:51:39,026 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:51:39,032 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:51:39,032 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:51:39,032 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:51:39,033 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:51:39,033 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:51:39,033 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:51:39,033 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:51:39,033 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:51:39,033 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:51:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-23 14:51:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-23 14:51:39,038 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:51:39,038 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] [2018-01-23 14:51:39,038 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:51:39,039 INFO L82 PathProgramCache]: Analyzing trace with hash 748584202, now seen corresponding path program 1 times [2018-01-23 14:51:39,039 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:51:39,039 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:51:39,040 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:39,040 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:39,041 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:51:39,065 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:51:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:51:39,104 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:51:39,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:51:39,105 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:51:39,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:51:39,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:51:39,194 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-01-23 14:51:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:51:39,211 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2018-01-23 14:51:39,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:51:39,212 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-23 14:51:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:51:39,219 INFO L225 Difference]: With dead ends: 92 [2018-01-23 14:51:39,219 INFO L226 Difference]: Without dead ends: 48 [2018-01-23 14:51:39,222 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 [2018-01-23 14:51:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-23 14:51:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-01-23 14:51:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-23 14:51:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-01-23 14:51:39,249 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 21 [2018-01-23 14:51:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:51:39,250 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-01-23 14:51:39,250 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:51:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-01-23 14:51:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-23 14:51:39,251 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:51:39,251 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] [2018-01-23 14:51:39,251 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:51:39,251 INFO L82 PathProgramCache]: Analyzing trace with hash 482191050, now seen corresponding path program 1 times [2018-01-23 14:51:39,251 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:51:39,251 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:51:39,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:39,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:39,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:51:39,275 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:51:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:51:39,353 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:51:39,354 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:51:39,355 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:51:39,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:51:39,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:51:39,356 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-01-23 14:51:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:51:39,428 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-01-23 14:51:39,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:51:39,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-23 14:51:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:51:39,430 INFO L225 Difference]: With dead ends: 77 [2018-01-23 14:51:39,430 INFO L226 Difference]: Without dead ends: 58 [2018-01-23 14:51:39,430 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 [2018-01-23 14:51:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-23 14:51:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-01-23 14:51:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-23 14:51:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-01-23 14:51:39,438 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 29 [2018-01-23 14:51:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:51:39,438 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-01-23 14:51:39,438 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:51:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-01-23 14:51:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-23 14:51:39,440 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:51:39,440 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] [2018-01-23 14:51:39,440 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:51:39,440 INFO L82 PathProgramCache]: Analyzing trace with hash 853755939, now seen corresponding path program 1 times [2018-01-23 14:51:39,441 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:51:39,441 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:51:39,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:39,442 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:39,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:51:39,466 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:51:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:51:39,994 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:51:39,994 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP 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 [2018-01-23 14:51:40,006 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:51:40,047 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:51:40,080 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc0.base| Int)) (and (= (select |c_old(#valid)| |main_#t~malloc0.base|) 0) (= (store |c_old(#valid)| |main_#t~malloc0.base| 1) |c_#valid|))) is different from true [2018-01-23 14:51:40,114 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc8.base| Int) (|main_#t~malloc0.base| Int)) (and (= (select |c_old(#valid)| |main_#t~malloc0.base|) 0) (= |c_#valid| (store (store |c_old(#valid)| |main_#t~malloc0.base| 1) |main_#t~malloc8.base| 1)))) is different from true [2018-01-23 14:51:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2018-01-23 14:51:40,202 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:51:40,203 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 18 [2018-01-23 14:51:40,203 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-23 14:51:40,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-23 14:51:40,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=196, Unknown=2, NotChecked=58, Total=306 [2018-01-23 14:51:40,204 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 18 states. [2018-01-23 14:51:41,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:51:41,014 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2018-01-23 14:51:41,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-23 14:51:41,014 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2018-01-23 14:51:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:51:41,018 INFO L225 Difference]: With dead ends: 124 [2018-01-23 14:51:41,019 INFO L226 Difference]: Without dead ends: 91 [2018-01-23 14:51:41,020 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=768, Unknown=32, NotChecked=126, Total=1190 [2018-01-23 14:51:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-23 14:51:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2018-01-23 14:51:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-23 14:51:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-01-23 14:51:41,030 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 39 [2018-01-23 14:51:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:51:41,030 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-01-23 14:51:41,030 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-23 14:51:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-01-23 14:51:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-23 14:51:41,032 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:51:41,032 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] [2018-01-23 14:51:41,032 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:51:41,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1994399343, now seen corresponding path program 1 times [2018-01-23 14:51:41,033 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:51:41,033 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:51:41,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:41,034 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:41,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:51:41,051 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:51:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:51:41,371 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:51:41,372 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:51:41,387 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:51:41,408 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:51:41,411 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc0.base| Int)) (and (= (select |c_old(#valid)| |main_#t~malloc0.base|) 0) (= (store |c_old(#valid)| |main_#t~malloc0.base| 1) |c_#valid|))) is different from true [2018-01-23 14:51:41,421 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc3.base| Int) (|main_#t~malloc0.base| Int)) (and (= (select |c_old(#valid)| |main_#t~malloc0.base|) 0) (= |c_#valid| (store (store |c_old(#valid)| |main_#t~malloc0.base| 1) |main_#t~malloc3.base| 1)))) is different from true [2018-01-23 14:51:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2018-01-23 14:51:41,494 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:51:41,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 18 [2018-01-23 14:51:41,494 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-23 14:51:41,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-23 14:51:41,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=196, Unknown=2, NotChecked=58, Total=306 [2018-01-23 14:51:41,495 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 18 states. [2018-01-23 14:51:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:51:42,114 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2018-01-23 14:51:42,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-23 14:51:42,114 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2018-01-23 14:51:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:51:42,116 INFO L225 Difference]: With dead ends: 132 [2018-01-23 14:51:42,116 INFO L226 Difference]: Without dead ends: 99 [2018-01-23 14:51:42,117 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=768, Unknown=32, NotChecked=126, Total=1190 [2018-01-23 14:51:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-23 14:51:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2018-01-23 14:51:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-23 14:51:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2018-01-23 14:51:42,123 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 39 [2018-01-23 14:51:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:51:42,123 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2018-01-23 14:51:42,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-23 14:51:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2018-01-23 14:51:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-23 14:51:42,124 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:51:42,125 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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] [2018-01-23 14:51:42,125 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:51:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash 917884476, now seen corresponding path program 2 times [2018-01-23 14:51:42,125 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:51:42,125 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:51:42,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:42,126 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:42,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:51:42,147 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:51:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:51:42,550 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:51:42,550 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:51:42,555 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:51:42,569 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:51:42,576 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:51:42,579 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:51:42,583 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:51:42,589 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc0.base| Int)) (and (= (select |c_old(#valid)| |main_#t~malloc0.base|) 0) (= (store |c_old(#valid)| |main_#t~malloc0.base| 1) |c_#valid|))) is different from true [2018-01-23 14:51:42,619 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc8.base| Int) (|main_#t~malloc0.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc0.base| 1))) (and (= (select .cse0 |main_#t~malloc8.base|) 0) (= (select |c_old(#valid)| |main_#t~malloc0.base|) 0) (= |c_#valid| (store .cse0 |main_#t~malloc8.base| 1))))) is different from true [2018-01-23 14:51:42,636 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc8.base| Int) (|main_#t~malloc0.base| Int) (v_prenex_1 Int)) (let ((.cse1 (store |c_old(#valid)| |main_#t~malloc0.base| 1))) (let ((.cse0 (store .cse1 v_prenex_1 1))) (and (= |c_#valid| (store .cse0 |main_#t~malloc8.base| 1)) (= (select .cse1 v_prenex_1) 0) (= (select |c_old(#valid)| |main_#t~malloc0.base|) 0) (= 0 (select .cse0 |main_#t~malloc8.base|)))))) is different from true [2018-01-23 14:51:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2018-01-23 14:51:42,704 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:51:42,705 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 6] total 24 [2018-01-23 14:51:42,705 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-23 14:51:42,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-23 14:51:42,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=337, Unknown=3, NotChecked=120, Total=552 [2018-01-23 14:51:42,706 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 24 states. [2018-01-23 14:51:43,582 WARN L146 SmtUtils]: Spent 126ms on a formula simplification. DAG size of input: 67 DAG size of output 42 [2018-01-23 14:51:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:51:43,883 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2018-01-23 14:51:43,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-23 14:51:43,884 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 49 [2018-01-23 14:51:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:51:43,885 INFO L225 Difference]: With dead ends: 118 [2018-01-23 14:51:43,885 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:51:43,886 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=327, Invalid=977, Unknown=40, NotChecked=216, Total=1560 [2018-01-23 14:51:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:51:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:51:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:51:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:51:43,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2018-01-23 14:51:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:51:43,888 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:51:43,888 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-23 14:51:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:51:43,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:51:43,890 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:51:43,890 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:51:43,890 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:51:43,890 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:51:43,890 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:51:43,890 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:51:43,890 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:51:43,890 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:51:43,891 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:51:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-23 14:51:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-23 14:51:43,893 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:51:43,893 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:51:43,893 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:51:43,894 INFO L82 PathProgramCache]: Analyzing trace with hash 394074613, now seen corresponding path program 1 times [2018-01-23 14:51:43,894 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:51:43,894 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:51:43,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:43,895 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:43,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:51:43,901 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:51:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:51:43,907 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:51:43,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:51:43,907 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:51:43,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:51:43,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:51:43,908 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-01-23 14:51:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:51:43,911 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2018-01-23 14:51:43,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:51:43,912 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-23 14:51:43,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:51:43,913 INFO L225 Difference]: With dead ends: 92 [2018-01-23 14:51:43,913 INFO L226 Difference]: Without dead ends: 46 [2018-01-23 14:51:43,913 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 [2018-01-23 14:51:43,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-23 14:51:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-01-23 14:51:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-23 14:51:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-01-23 14:51:43,918 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 19 [2018-01-23 14:51:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:51:43,918 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-01-23 14:51:43,918 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:51:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-01-23 14:51:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-23 14:51:43,919 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:51:43,919 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] [2018-01-23 14:51:43,919 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-23 14:51:43,919 INFO L82 PathProgramCache]: Analyzing trace with hash -455363659, now seen corresponding path program 1 times [2018-01-23 14:51:43,919 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:51:43,920 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:51:43,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:43,921 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:51:43,921 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:51:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:51:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:51:43,941 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:51:43,945 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:51:43,949 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:51:43,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:51:43 BoogieIcfgContainer [2018-01-23 14:51:43,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:51:43,963 INFO L168 Benchmark]: Toolchain (without parser) took 5757.34 ms. Allocated memory was 307.2 MB in the beginning and 542.1 MB in the end (delta: 234.9 MB). Free memory was 267.2 MB in the beginning and 439.0 MB in the end (delta: -171.8 MB). Peak memory consumption was 63.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:51:43,965 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 307.2 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:51:43,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.57 ms. Allocated memory is still 307.2 MB. Free memory was 266.2 MB in the beginning and 256.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:51:43,966 INFO L168 Benchmark]: Boogie Preprocessor took 34.37 ms. Allocated memory is still 307.2 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:51:43,966 INFO L168 Benchmark]: RCFGBuilder took 278.00 ms. Allocated memory is still 307.2 MB. Free memory was 254.2 MB in the beginning and 233.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 5.3 GB. [2018-01-23 14:51:43,966 INFO L168 Benchmark]: TraceAbstraction took 5215.48 ms. Allocated memory was 307.2 MB in the beginning and 542.1 MB in the end (delta: 234.9 MB). Free memory was 232.9 MB in the beginning and 439.0 MB in the end (delta: -206.1 MB). Peak memory consumption was 28.8 MB. Max. memory is 5.3 GB. [2018-01-23 14:51:43,968 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 307.2 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 222.57 ms. Allocated memory is still 307.2 MB. Free memory was 266.2 MB in the beginning and 256.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.37 ms. Allocated memory is still 307.2 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 278.00 ms. Allocated memory is still 307.2 MB. Free memory was 254.2 MB in the beginning and 233.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 5215.48 ms. Allocated memory was 307.2 MB in the beginning and 542.1 MB in the end (delta: 234.9 MB). Free memory was 232.9 MB in the beginning and 439.0 MB in the end (delta: -206.1 MB). Peak memory consumption was 28.8 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) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - 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 - PositiveResult [Line: 1]: 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: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 60 locations, 4 error locations. SAFE Result, 4.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 213 SDtfs, 1472 SDslu, 871 SDs, 0 SdLazy, 992 SolverSat, 227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=4, 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 56 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 304 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 296 ConstructedInterpolants, 103 QuantifiedInterpolants, 160554 SizeOfPredicates, 13 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 626]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L627] EXPR, FCALL malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={10:0}] [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L628] COND FALSE !(a == 0) VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L629] List t; [L630] List p = a; VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L645] FCALL p->h = 3 VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L646] p = a VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L647] EXPR, FCALL p->h VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L647] COND FALSE !(p->h == 1) [L649] EXPR, FCALL p->h VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR, FCALL p->h VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L651] COND FALSE !(p->h != 3) [L653] return 0; VAL [\result=0, a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 60 locations, 4 error locations. UNSAFE Result, 0.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 62 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 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, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - InvariantResult [Line: 631]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 647]: Loop Invariant Derived loop invariant: 1 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_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-51-43-978.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_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-51-43-978.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_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-51-43-978.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_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-51-43-978.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_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-51-43-978.csv Received shutdown request...