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_mostprecise.epf -i ../../../trunk/examples/svcomp/list-properties/alternating_list_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 03:35:22,244 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 03:35:22,246 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 03:35:22,261 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 03:35:22,261 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 03:35:22,262 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 03:35:22,263 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 03:35:22,265 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 03:35:22,267 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 03:35:22,268 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 03:35:22,269 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 03:35:22,269 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 03:35:22,270 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 03:35:22,271 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 03:35:22,272 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 03:35:22,274 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 03:35:22,277 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 03:35:22,279 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 03:35:22,281 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 03:35:22,282 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 03:35:22,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 03:35:22,290 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 03:35:22,291 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 03:35:22,291 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_mostprecise.epf [2018-01-21 03:35:22,302 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 03:35:22,302 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 03:35:22,303 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 03:35:22,304 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 03:35:22,304 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 03:35:22,304 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 03:35:22,304 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 03:35:22,304 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 03:35:22,305 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 03:35:22,305 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 03:35:22,306 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 03:35:22,306 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 03:35:22,306 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 03:35:22,306 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 03:35:22,306 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 03:35:22,307 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 03:35:22,307 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 03:35:22,307 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 03:35:22,307 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 03:35:22,307 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 03:35:22,307 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 03:35:22,307 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 03:35:22,307 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 03:35:22,308 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 03:35:22,308 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 03:35:22,308 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 03:35:22,308 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 03:35:22,308 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:35:22,308 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 03:35:22,308 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 03:35:22,308 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 03:35:22,309 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 03:35:22,309 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 03:35:22,309 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 03:35:22,309 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 03:35:22,309 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 03:35:22,309 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 03:35:22,309 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 03:35:22,310 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 03:35:22,311 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 03:35:22,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 03:35:22,363 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 03:35:22,368 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 03:35:22,370 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 03:35:22,370 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 03:35:22,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/alternating_list_true-unreach-call_true-valid-memsafety.i [2018-01-21 03:35:22,587 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 03:35:22,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 03:35:22,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 03:35:22,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 03:35:22,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 03:35:22,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e44dacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22, skipping insertion in model container [2018-01-21 03:35:22,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,632 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:35:22,688 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:35:22,834 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:35:22,868 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:35:22,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22 WrapperNode [2018-01-21 03:35:22,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 03:35:22,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 03:35:22,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 03:35:22,883 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 03:35:22,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (1/1) ... [2018-01-21 03:35:22,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 03:35:22,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 03:35:22,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 03:35:22,954 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 03:35:22,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (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 03:35:23,009 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 03:35:23,009 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 03:35:23,010 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 03:35:23,010 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 03:35:23,010 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 03:35:23,010 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 03:35:23,010 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 03:35:23,010 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 03:35:23,010 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 03:35:23,010 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 03:35:23,010 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 03:35:23,011 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 03:35:23,011 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 03:35:23,011 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 03:35:23,011 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 03:35:23,011 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 03:35:23,011 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 03:35:23,011 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 03:35:23,012 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 03:35:23,287 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 03:35:23,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:35:23 BoogieIcfgContainer [2018-01-21 03:35:23,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 03:35:23,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 03:35:23,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 03:35:23,290 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 03:35:23,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 03:35:22" (1/3) ... [2018-01-21 03:35:23,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0ceccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:35:23, skipping insertion in model container [2018-01-21 03:35:23,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:35:22" (2/3) ... [2018-01-21 03:35:23,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0ceccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:35:23, skipping insertion in model container [2018-01-21 03:35:23,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:35:23" (3/3) ... [2018-01-21 03:35:23,294 INFO L105 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i [2018-01-21 03:35:23,301 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 03:35:23,309 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 03:35:23,351 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:35:23,352 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:35:23,352 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:35:23,352 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:35:23,352 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:35:23,352 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:35:23,353 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:35:23,353 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 03:35:23,354 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:35:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 03:35:23,384 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 03:35:23,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 57 states. [2018-01-21 03:35:23,463 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 03:35:23,463 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 623 625) no Hoare annotation was computed. [2018-01-21 03:35:23,463 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 623 625) the Hoare annotation is: true [2018-01-21 03:35:23,463 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 623 625) no Hoare annotation was computed. [2018-01-21 03:35:23,464 INFO L401 ceAbstractionStarter]: For program point L624(line 624) no Hoare annotation was computed. [2018-01-21 03:35:23,464 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 670) no Hoare annotation was computed. [2018-01-21 03:35:23,464 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 670) no Hoare annotation was computed. [2018-01-21 03:35:23,464 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 670) the Hoare annotation is: true [2018-01-21 03:35:23,464 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 670) no Hoare annotation was computed. [2018-01-21 03:35:23,465 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 670) the Hoare annotation is: true [2018-01-21 03:35:23,465 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 670) no Hoare annotation was computed. [2018-01-21 03:35:23,465 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 670) the Hoare annotation is: true [2018-01-21 03:35:23,465 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 670) no Hoare annotation was computed. [2018-01-21 03:35:23,465 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 670) no Hoare annotation was computed. [2018-01-21 03:35:23,466 INFO L401 ceAbstractionStarter]: For program point L663(line 663) no Hoare annotation was computed. [2018-01-21 03:35:23,466 INFO L401 ceAbstractionStarter]: For program point L661(lines 661 665) no Hoare annotation was computed. [2018-01-21 03:35:23,466 INFO L401 ceAbstractionStarter]: For program point L666(line 666) no Hoare annotation was computed. [2018-01-21 03:35:23,466 INFO L401 ceAbstractionStarter]: For program point L664(line 664) no Hoare annotation was computed. [2018-01-21 03:35:23,466 INFO L401 ceAbstractionStarter]: For program point L661'''(lines 661 665) no Hoare annotation was computed. [2018-01-21 03:35:23,466 INFO L401 ceAbstractionStarter]: For program point L629(line 629) no Hoare annotation was computed. [2018-01-21 03:35:23,466 INFO L401 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-01-21 03:35:23,467 INFO L401 ceAbstractionStarter]: For program point L655'(line 655) no Hoare annotation was computed. [2018-01-21 03:35:23,467 INFO L401 ceAbstractionStarter]: For program point L651(line 651) no Hoare annotation was computed. [2018-01-21 03:35:23,467 INFO L404 ceAbstractionStarter]: At program point L656(line 656) the Hoare annotation is: true [2018-01-21 03:35:23,467 INFO L401 ceAbstractionStarter]: For program point L663'(line 663) no Hoare annotation was computed. [2018-01-21 03:35:23,467 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 670) no Hoare annotation was computed. [2018-01-21 03:35:23,467 INFO L401 ceAbstractionStarter]: For program point L651'(line 651) no Hoare annotation was computed. [2018-01-21 03:35:23,468 INFO L401 ceAbstractionStarter]: For program point L655(line 655) no Hoare annotation was computed. [2018-01-21 03:35:23,468 INFO L401 ceAbstractionStarter]: For program point L629'''(line 629) no Hoare annotation was computed. [2018-01-21 03:35:23,468 INFO L401 ceAbstractionStarter]: For program point L658(line 658) no Hoare annotation was computed. [2018-01-21 03:35:23,468 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 670) no Hoare annotation was computed. [2018-01-21 03:35:23,468 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 670) the Hoare annotation is: true [2018-01-21 03:35:23,468 INFO L401 ceAbstractionStarter]: For program point L648'(line 648) no Hoare annotation was computed. [2018-01-21 03:35:23,468 INFO L401 ceAbstractionStarter]: For program point L632'(lines 632 644) no Hoare annotation was computed. [2018-01-21 03:35:23,468 INFO L404 ceAbstractionStarter]: At program point L664'(line 664) the Hoare annotation is: true [2018-01-21 03:35:23,469 INFO L404 ceAbstractionStarter]: At program point L632'''(lines 632 644) the Hoare annotation is: true [2018-01-21 03:35:23,469 INFO L401 ceAbstractionStarter]: For program point L628'(line 628) no Hoare annotation was computed. [2018-01-21 03:35:23,469 INFO L401 ceAbstractionStarter]: For program point L641(line 641) no Hoare annotation was computed. [2018-01-21 03:35:23,469 INFO L401 ceAbstractionStarter]: For program point L640(line 640) no Hoare annotation was computed. [2018-01-21 03:35:23,469 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-21 03:35:23,469 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 03:35:23,470 INFO L401 ceAbstractionStarter]: For program point L632''''(lines 632 644) no Hoare annotation was computed. [2018-01-21 03:35:23,470 INFO L401 ceAbstractionStarter]: For program point L642(line 642) no Hoare annotation was computed. [2018-01-21 03:35:23,470 INFO L401 ceAbstractionStarter]: For program point L649(lines 649 657) no Hoare annotation was computed. [2018-01-21 03:35:23,470 INFO L401 ceAbstractionStarter]: For program point L648(lines 648 659) no Hoare annotation was computed. [2018-01-21 03:35:23,470 INFO L401 ceAbstractionStarter]: For program point L649''(lines 649 657) no Hoare annotation was computed. [2018-01-21 03:35:23,470 INFO L401 ceAbstractionStarter]: For program point L637'(line 637) no Hoare annotation was computed. [2018-01-21 03:35:23,471 INFO L404 ceAbstractionStarter]: At program point L629'(line 629) the Hoare annotation is: true [2018-01-21 03:35:23,471 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 670) no Hoare annotation was computed. [2018-01-21 03:35:23,471 INFO L401 ceAbstractionStarter]: For program point L648''''(lines 648 659) no Hoare annotation was computed. [2018-01-21 03:35:23,471 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-21 03:35:23,471 INFO L404 ceAbstractionStarter]: At program point L641'(line 641) the Hoare annotation is: true [2018-01-21 03:35:23,471 INFO L401 ceAbstractionStarter]: For program point L633(lines 633 639) no Hoare annotation was computed. [2018-01-21 03:35:23,472 INFO L401 ceAbstractionStarter]: For program point L632(lines 632 644) no Hoare annotation was computed. [2018-01-21 03:35:23,472 INFO L401 ceAbstractionStarter]: For program point L661'(line 661) no Hoare annotation was computed. [2018-01-21 03:35:23,472 INFO L401 ceAbstractionStarter]: For program point L633''(lines 633 639) no Hoare annotation was computed. [2018-01-21 03:35:23,472 INFO L401 ceAbstractionStarter]: For program point L637(line 637) no Hoare annotation was computed. [2018-01-21 03:35:23,472 INFO L404 ceAbstractionStarter]: At program point L648'''(lines 648 659) the Hoare annotation is: true [2018-01-21 03:35:23,472 INFO L401 ceAbstractionStarter]: For program point L641'''(line 641) no Hoare annotation was computed. [2018-01-21 03:35:23,472 INFO L401 ceAbstractionStarter]: For program point L634'(line 634) no Hoare annotation was computed. [2018-01-21 03:35:23,477 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:35:23,477 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:35:23,477 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:35:23,478 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:35:23,478 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:35:23,478 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:35:23,478 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:35:23,478 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 03:35:23,478 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:35:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 03:35:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 03:35:23,482 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:35:23,484 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 03:35:23,484 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 03:35:23,488 INFO L82 PathProgramCache]: Analyzing trace with hash 150587, now seen corresponding path program 1 times [2018-01-21 03:35:23,490 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:35:23,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,508 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:35:23,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,508 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:35:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:35:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:35:23,562 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:35:23,567 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:35:23,573 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:35:23,573 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:35:23,573 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:35:23,574 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:35:23,574 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:35:23,574 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:35:23,574 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:35:23,574 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 03:35:23,574 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:35:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 03:35:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 03:35:23,579 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:35:23,579 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 03:35:23,579 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:35:23,580 INFO L82 PathProgramCache]: Analyzing trace with hash -633884924, now seen corresponding path program 1 times [2018-01-21 03:35:23,580 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:35:23,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:35:23,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:35:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:35:23,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:35:23,648 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 03:35:23,729 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:35:23,729 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:35:23,729 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:35:23,732 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:35:23,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:35:23,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:35:23,746 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-01-21 03:35:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:35:23,768 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-01-21 03:35:23,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:35:23,770 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-21 03:35:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:35:23,777 INFO L225 Difference]: With dead ends: 85 [2018-01-21 03:35:23,778 INFO L226 Difference]: Without dead ends: 49 [2018-01-21 03:35:23,780 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 03:35:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-01-21 03:35:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-01-21 03:35:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-21 03:35:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-01-21 03:35:23,813 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 21 [2018-01-21 03:35:23,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:35:23,813 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-01-21 03:35:23,813 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:35:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-01-21 03:35:23,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 03:35:23,815 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:35:23,815 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] [2018-01-21 03:35:23,815 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:35:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash 10332939, now seen corresponding path program 1 times [2018-01-21 03:35:23,815 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:35:23,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,817 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:35:23,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,817 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:35:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:35:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:35:23,865 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:35:23,872 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:35:23,876 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:35:23,876 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:35:23,886 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:35:23,886 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:35:23,886 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:35:23,886 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:35:23,886 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:35:23,886 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:35:23,886 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:35:23,886 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 03:35:23,886 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:35:23,887 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-01-21 03:35:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 03:35:23,888 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:35:23,889 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:35:23,889 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 03:35:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash 607160941, now seen corresponding path program 1 times [2018-01-21 03:35:23,889 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:35:23,890 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,890 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:35:23,890 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,890 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:35:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:35:23,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:35:23,916 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 03:35:23,917 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:35:23,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:35:23,917 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:35:23,917 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:35:23,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:35:23,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:35:23,918 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-01-21 03:35:23,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:35:23,925 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-01-21 03:35:23,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:35:23,925 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-21 03:35:23,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:35:23,926 INFO L225 Difference]: With dead ends: 85 [2018-01-21 03:35:23,927 INFO L226 Difference]: Without dead ends: 47 [2018-01-21 03:35:23,927 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 03:35:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-01-21 03:35:23,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-01-21 03:35:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-01-21 03:35:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-01-21 03:35:23,934 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 19 [2018-01-21 03:35:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:35:23,934 INFO L432 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-01-21 03:35:23,934 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:35:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-01-21 03:35:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 03:35:23,936 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:35:23,936 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] [2018-01-21 03:35:23,936 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 03:35:23,936 INFO L82 PathProgramCache]: Analyzing trace with hash -98313164, now seen corresponding path program 1 times [2018-01-21 03:35:23,936 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:35:23,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,937 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:35:23,938 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:23,938 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:35:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:35:23,959 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:35:24,149 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 03:35:24,149 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:35:24,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 03:35:24,150 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:35:24,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 03:35:24,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 03:35:24,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 03:35:24,152 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 6 states. [2018-01-21 03:35:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:35:24,528 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2018-01-21 03:35:24,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 03:35:24,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-21 03:35:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:35:24,531 INFO L225 Difference]: With dead ends: 90 [2018-01-21 03:35:24,531 INFO L226 Difference]: Without dead ends: 86 [2018-01-21 03:35:24,532 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-21 03:35:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-21 03:35:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2018-01-21 03:35:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-21 03:35:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2018-01-21 03:35:24,543 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 25 [2018-01-21 03:35:24,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:35:24,544 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2018-01-21 03:35:24,544 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 03:35:24,544 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2018-01-21 03:35:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-21 03:35:24,545 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:35:24,545 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] [2018-01-21 03:35:24,546 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 03:35:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash 530147864, now seen corresponding path program 1 times [2018-01-21 03:35:24,546 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:35:24,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:24,548 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:35:24,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:24,548 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:35:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:35:24,567 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:35:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:35:24,659 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:35:24,659 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 03:35:24,659 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:35:24,660 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 03:35:24,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 03:35:24,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-21 03:35:24,660 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 7 states. [2018-01-21 03:35:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:35:24,945 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2018-01-21 03:35:24,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 03:35:24,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-01-21 03:35:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:35:24,948 INFO L225 Difference]: With dead ends: 121 [2018-01-21 03:35:24,948 INFO L226 Difference]: Without dead ends: 88 [2018-01-21 03:35:24,949 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-21 03:35:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-21 03:35:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 57. [2018-01-21 03:35:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-21 03:35:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-01-21 03:35:24,956 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 31 [2018-01-21 03:35:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:35:24,957 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-01-21 03:35:24,957 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 03:35:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-01-21 03:35:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 03:35:24,958 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:35:24,958 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] [2018-01-21 03:35:24,959 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-21 03:35:24,959 INFO L82 PathProgramCache]: Analyzing trace with hash 389018762, now seen corresponding path program 1 times [2018-01-21 03:35:24,959 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:35:24,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:24,960 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:35:24,961 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:35:24,961 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:35:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:35:24,981 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:35:25,299 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 03:35:25,299 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:35:25,300 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 03:35:25,300 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-21 03:35:25,302 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [8], [10], [14], [16], [19], [21], [24], [25], [26], [32], [33], [39], [41], [42], [43], [47], [48], [52], [54], [57], [83], [87], [89], [92], [101], [102], [105], [111], [112], [122], [123], [124] [2018-01-21 03:35:25,348 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 03:35:25,349 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 03:36:26,237 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 03:36:26,238 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 03:36:26,239 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 03:36:26,239 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:36:26,239 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 03:36:26,251 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:36:26,251 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 03:36:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:36:26,291 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 03:36:26,296 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 03:36:26,296 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 03:36:26,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 03:36:26 BoogieIcfgContainer [2018-01-21 03:36:26,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 03:36:26,299 INFO L168 Benchmark]: Toolchain (without parser) took 63711.18 ms. Allocated memory was 308.8 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 266.0 MB in the beginning and 933.2 MB in the end (delta: -667.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-21 03:36:26,300 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 308.8 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 03:36:26,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.90 ms. Allocated memory is still 308.8 MB. Free memory was 266.0 MB in the beginning and 254.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 03:36:26,301 INFO L168 Benchmark]: Boogie Preprocessor took 72.08 ms. Allocated memory is still 308.8 MB. Free memory is still 254.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 03:36:26,301 INFO L168 Benchmark]: RCFGBuilder took 334.73 ms. Allocated memory is still 308.8 MB. Free memory was 254.0 MB in the beginning and 233.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 5.3 GB. [2018-01-21 03:36:26,301 INFO L168 Benchmark]: TraceAbstraction took 63009.45 ms. Allocated memory was 308.8 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 233.0 MB in the beginning and 933.2 MB in the end (delta: -700.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-21 03:36:26,303 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 308.8 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 285.90 ms. Allocated memory is still 308.8 MB. Free memory was 266.0 MB in the beginning and 254.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 72.08 ms. Allocated memory is still 308.8 MB. Free memory is still 254.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 334.73 ms. Allocated memory is still 308.8 MB. Free memory was 254.0 MB in the beginning and 233.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 63009.45 ms. Allocated memory was 308.8 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 233.0 MB in the beginning and 933.2 MB in the end (delta: -700.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - 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, 11 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 11 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 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 - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L627] int flag = 1; VAL [flag=1] [L628] EXPR, FCALL malloc(sizeof(struct node)) VAL [flag=1, malloc(sizeof(struct node))={12:0}] [L628] List a = (List) malloc(sizeof(struct node)); VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}] [L629] COND FALSE !(a == 0) VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}] [L630] List t; [L631] List p = a; VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L632] COND FALSE !(__VERIFIER_nondet_int()) [L645] FCALL p->h = 3 VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L646] p = a [L647] flag = 1 VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L648] EXPR, FCALL p->h VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}, p->h=3] [L648] COND FALSE !(p->h != 3) [L660] p = a VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L661] EXPR, FCALL p->h VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}, p->h=3] [L661] COND FALSE !(p->h != 3) [L666] FCALL free(p) VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L667] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 60 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 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, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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 - TimeoutResultAtElement [Line: 626]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 626). Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 60 locations, 4 error locations. TIMEOUT Result, 62.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 127 SDtfs, 155 SDslu, 276 SDs, 0 SdLazy, 205 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 60.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 51 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 7020 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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/alternating_list_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_03-36-26-311.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_03-36-26-311.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_03-36-26-311.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_03-36-26-311.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_03-36-26-311.csv Completed graceful shutdown