java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:25:40,370 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:25:40,371 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:25:40,386 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:25:40,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:25:40,387 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:25:40,388 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:25:40,390 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:25:40,392 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:25:40,393 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:25:40,394 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:25:40,394 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:25:40,395 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:25:40,396 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:25:40,397 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:25:40,399 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:25:40,402 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:25:40,404 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:25:40,405 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:25:40,406 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:25:40,409 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 10:25:40,409 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 10:25:40,409 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 10:25:40,410 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 10:25:40,411 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 10:25:40,412 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 10:25:40,413 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 10:25:40,413 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 10:25:40,413 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 10:25:40,413 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:25:40,414 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:25:40,414 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-21 10:25:40,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:25:40,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:25:40,424 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:25:40,424 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:25:40,424 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:25:40,425 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:25:40,425 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:25:40,425 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:25:40,425 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:25:40,425 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:25:40,425 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:25:40,426 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:25:40,426 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:25:40,426 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:25:40,426 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:25:40,426 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:25:40,426 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:25:40,426 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:25:40,427 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:25:40,427 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:25:40,427 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:25:40,427 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:25:40,427 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:25:40,427 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:25:40,428 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:25:40,428 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:25:40,428 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:25:40,428 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:25:40,428 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:25:40,428 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:25:40,428 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:25:40,429 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:25:40,429 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:25:40,429 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:25:40,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:25:40,429 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:25:40,429 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:25:40,430 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:25:40,430 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:25:40,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:25:40,473 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:25:40,476 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:25:40,477 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:25:40,478 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:25:40,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_false-unreach-call_false-valid-deref.i [2018-01-21 10:25:40,698 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:25:40,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:25:40,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:25:40,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:25:40,708 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:25:40,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3724a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40, skipping insertion in model container [2018-01-21 10:25:40,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,725 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:25:40,762 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:25:40,884 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:25:40,907 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:25:40,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40 WrapperNode [2018-01-21 10:25:40,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:25:40,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:25:40,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:25:40,918 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:25:40,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (1/1) ... [2018-01-21 10:25:40,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:25:40,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:25:40,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:25:40,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:25:40,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:25:41,011 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:25:41,011 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:25:41,011 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 10:25:41,011 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:25:41,011 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:25:41,012 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:25:41,013 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:25:41,013 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 10:25:41,013 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:25:41,013 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:25:41,013 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:25:41,283 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:25:41,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:25:41 BoogieIcfgContainer [2018-01-21 10:25:41,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:25:41,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:25:41,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:25:41,287 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:25:41,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:25:40" (1/3) ... [2018-01-21 10:25:41,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46604fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:25:41, skipping insertion in model container [2018-01-21 10:25:41,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:25:40" (2/3) ... [2018-01-21 10:25:41,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46604fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:25:41, skipping insertion in model container [2018-01-21 10:25:41,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:25:41" (3/3) ... [2018-01-21 10:25:41,291 INFO L105 eAbstractionObserver]: Analyzing ICFG list-ext_false-unreach-call_false-valid-deref.i [2018-01-21 10:25:41,297 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:25:41,305 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 10:25:41,342 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:25:41,342 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:25:41,342 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:25:41,342 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:25:41,342 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:25:41,342 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:25:41,343 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:25:41,343 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 10:25:41,344 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:25:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 10:25:41,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:25:41,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 69 states. [2018-01-21 10:25:41,480 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 10:25:41,480 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-21 10:25:41,481 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-21 10:25:41,481 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-21 10:25:41,481 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-21 10:25:41,481 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 671) no Hoare annotation was computed. [2018-01-21 10:25:41,481 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 671) no Hoare annotation was computed. [2018-01-21 10:25:41,482 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 671) the Hoare annotation is: true [2018-01-21 10:25:41,482 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 671) no Hoare annotation was computed. [2018-01-21 10:25:41,482 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 671) the Hoare annotation is: true [2018-01-21 10:25:41,482 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 671) no Hoare annotation was computed. [2018-01-21 10:25:41,483 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 671) the Hoare annotation is: true [2018-01-21 10:25:41,483 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 671) no Hoare annotation was computed. [2018-01-21 10:25:41,483 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 671) no Hoare annotation was computed. [2018-01-21 10:25:41,483 INFO L401 ceAbstractionStarter]: For program point L641'''''(lines 641 648) no Hoare annotation was computed. [2018-01-21 10:25:41,483 INFO L404 ceAbstractionStarter]: At program point L664'''(lines 664 668) the Hoare annotation is: true [2018-01-21 10:25:41,483 INFO L401 ceAbstractionStarter]: For program point L659'(line 659) no Hoare annotation was computed. [2018-01-21 10:25:41,484 INFO L401 ceAbstractionStarter]: For program point L629(line 629) no Hoare annotation was computed. [2018-01-21 10:25:41,484 INFO L401 ceAbstractionStarter]: For program point L635'(line 635) no Hoare annotation was computed. [2018-01-21 10:25:41,484 INFO L401 ceAbstractionStarter]: For program point L664''''(lines 664 668) no Hoare annotation was computed. [2018-01-21 10:25:41,484 INFO L401 ceAbstractionStarter]: For program point L641''''''(lines 641 648) no Hoare annotation was computed. [2018-01-21 10:25:41,484 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 671) no Hoare annotation was computed. [2018-01-21 10:25:41,484 INFO L401 ceAbstractionStarter]: For program point L664'(line 664) no Hoare annotation was computed. [2018-01-21 10:25:41,485 INFO L404 ceAbstractionStarter]: At program point L653'''(lines 653 656) the Hoare annotation is: true [2018-01-21 10:25:41,485 INFO L401 ceAbstractionStarter]: For program point L641(lines 641 648) no Hoare annotation was computed. [2018-01-21 10:25:41,485 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-21 10:25:41,485 INFO L401 ceAbstractionStarter]: For program point L644(line 644) no Hoare annotation was computed. [2018-01-21 10:25:41,485 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 10:25:41,485 INFO L401 ceAbstractionStarter]: For program point L649(line 649) no Hoare annotation was computed. [2018-01-21 10:25:41,486 INFO L401 ceAbstractionStarter]: For program point L647(line 647) no Hoare annotation was computed. [2018-01-21 10:25:41,486 INFO L401 ceAbstractionStarter]: For program point L646(line 646) no Hoare annotation was computed. [2018-01-21 10:25:41,486 INFO L401 ceAbstractionStarter]: For program point L657'(line 657) no Hoare annotation was computed. [2018-01-21 10:25:41,486 INFO L404 ceAbstractionStarter]: At program point L645'(line 645) the Hoare annotation is: true [2018-01-21 10:25:41,486 INFO L401 ceAbstractionStarter]: For program point L633'(line 633) no Hoare annotation was computed. [2018-01-21 10:25:41,486 INFO L401 ceAbstractionStarter]: For program point L629'(line 629) no Hoare annotation was computed. [2018-01-21 10:25:41,487 INFO L401 ceAbstractionStarter]: For program point L637'''(line 637) no Hoare annotation was computed. [2018-01-21 10:25:41,487 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 671) no Hoare annotation was computed. [2018-01-21 10:25:41,487 INFO L401 ceAbstractionStarter]: For program point L630(line 630) no Hoare annotation was computed. [2018-01-21 10:25:41,487 INFO L401 ceAbstractionStarter]: For program point L633(lines 633 640) no Hoare annotation was computed. [2018-01-21 10:25:41,487 INFO L401 ceAbstractionStarter]: For program point L638(line 638) no Hoare annotation was computed. [2018-01-21 10:25:41,487 INFO L401 ceAbstractionStarter]: For program point L637(line 637) no Hoare annotation was computed. [2018-01-21 10:25:41,488 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-21 10:25:41,488 INFO L401 ceAbstractionStarter]: For program point L635(line 635) no Hoare annotation was computed. [2018-01-21 10:25:41,488 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-21 10:25:41,489 INFO L401 ceAbstractionStarter]: For program point L662(line 662) no Hoare annotation was computed. [2018-01-21 10:25:41,489 INFO L401 ceAbstractionStarter]: For program point L661(line 661) no Hoare annotation was computed. [2018-01-21 10:25:41,489 INFO L401 ceAbstractionStarter]: For program point L661''(lines 661 662) no Hoare annotation was computed. [2018-01-21 10:25:41,489 INFO L404 ceAbstractionStarter]: At program point L630'(line 630) the Hoare annotation is: true [2018-01-21 10:25:41,489 INFO L401 ceAbstractionStarter]: For program point L645'''(line 645) no Hoare annotation was computed. [2018-01-21 10:25:41,489 INFO L401 ceAbstractionStarter]: For program point L666(line 666) no Hoare annotation was computed. [2018-01-21 10:25:41,490 INFO L401 ceAbstractionStarter]: For program point L665(line 665) no Hoare annotation was computed. [2018-01-21 10:25:41,490 INFO L401 ceAbstractionStarter]: For program point L664(lines 664 668) no Hoare annotation was computed. [2018-01-21 10:25:41,490 INFO L401 ceAbstractionStarter]: For program point L669(line 669) no Hoare annotation was computed. [2018-01-21 10:25:41,490 INFO L401 ceAbstractionStarter]: For program point L655'(line 655) no Hoare annotation was computed. [2018-01-21 10:25:41,490 INFO L401 ceAbstractionStarter]: For program point L643'(line 643) no Hoare annotation was computed. [2018-01-21 10:25:41,490 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 671) no Hoare annotation was computed. [2018-01-21 10:25:41,490 INFO L401 ceAbstractionStarter]: For program point L655(line 655) no Hoare annotation was computed. [2018-01-21 10:25:41,491 INFO L401 ceAbstractionStarter]: For program point L653(lines 653 656) no Hoare annotation was computed. [2018-01-21 10:25:41,491 INFO L401 ceAbstractionStarter]: For program point L659(line 659) no Hoare annotation was computed. [2018-01-21 10:25:41,491 INFO L401 ceAbstractionStarter]: For program point L657(lines 657 660) no Hoare annotation was computed. [2018-01-21 10:25:41,491 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 671) the Hoare annotation is: true [2018-01-21 10:25:41,491 INFO L404 ceAbstractionStarter]: At program point L633'''''(lines 633 640) the Hoare annotation is: true [2018-01-21 10:25:41,491 INFO L401 ceAbstractionStarter]: For program point L657'''(lines 657 660) no Hoare annotation was computed. [2018-01-21 10:25:41,492 INFO L401 ceAbstractionStarter]: For program point L657''''(lines 657 660) no Hoare annotation was computed. [2018-01-21 10:25:41,492 INFO L401 ceAbstractionStarter]: For program point L630'''(line 630) no Hoare annotation was computed. [2018-01-21 10:25:41,492 INFO L404 ceAbstractionStarter]: At program point L637'(line 637) the Hoare annotation is: true [2018-01-21 10:25:41,492 INFO L401 ceAbstractionStarter]: For program point L665'(line 665) no Hoare annotation was computed. [2018-01-21 10:25:41,492 INFO L401 ceAbstractionStarter]: For program point L653'(line 653) no Hoare annotation was computed. [2018-01-21 10:25:41,492 INFO L401 ceAbstractionStarter]: For program point L633'''(line 633) no Hoare annotation was computed. [2018-01-21 10:25:41,492 INFO L401 ceAbstractionStarter]: For program point L641'(line 641) no Hoare annotation was computed. [2018-01-21 10:25:41,492 INFO L401 ceAbstractionStarter]: For program point L641'''(line 641) no Hoare annotation was computed. [2018-01-21 10:25:41,493 INFO L401 ceAbstractionStarter]: For program point L666'(line 666) no Hoare annotation was computed. [2018-01-21 10:25:41,497 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:25:41,498 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:25:41,498 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:25:41,498 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:25:41,498 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:25:41,498 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:25:41,498 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:25:41,499 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:25:41,499 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:25:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 10:25:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:25:41,502 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:25:41,503 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:25:41,503 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:25:41,507 INFO L82 PathProgramCache]: Analyzing trace with hash 187264, now seen corresponding path program 1 times [2018-01-21 10:25:41,509 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:25:41,525 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:41,526 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:25:41,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:41,526 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:25:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:25:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:25:41,574 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:25:41,578 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:25:41,583 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:25:41,583 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:25:41,583 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:25:41,583 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:25:41,584 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:25:41,584 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:25:41,584 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:25:41,584 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:25:41,584 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:25:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 10:25:41,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 10:25:41,590 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:25:41,590 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 10:25:41,590 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:25:41,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1653990869, now seen corresponding path program 1 times [2018-01-21 10:25:41,590 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:25:41,592 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:41,592 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:25:41,592 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:41,592 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:25:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:25:41,617 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:25:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:25:41,720 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:25:41,721 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:25:41,721 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:25:41,723 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:25:41,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:25:41,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:25:41,735 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-01-21 10:25:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:25:41,755 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2018-01-21 10:25:41,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:25:41,756 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 10:25:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:25:41,762 INFO L225 Difference]: With dead ends: 114 [2018-01-21 10:25:41,762 INFO L226 Difference]: Without dead ends: 60 [2018-01-21 10:25:41,765 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:25:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-21 10:25:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-21 10:25:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-21 10:25:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2018-01-21 10:25:41,792 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 25 [2018-01-21 10:25:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:25:41,793 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2018-01-21 10:25:41,793 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:25:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2018-01-21 10:25:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 10:25:41,794 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:25:41,794 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:25:41,794 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:25:41,794 INFO L82 PathProgramCache]: Analyzing trace with hash -504410673, now seen corresponding path program 1 times [2018-01-21 10:25:41,794 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:25:41,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:41,795 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:25:41,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:41,796 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:25:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:25:41,831 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:25:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:25:41,922 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:25:41,922 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 10:25:41,922 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:25:41,924 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:25:41,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:25:41,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:25:41,924 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 3 states. [2018-01-21 10:25:41,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:25:41,960 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2018-01-21 10:25:41,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:25:41,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-01-21 10:25:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:25:41,962 INFO L225 Difference]: With dead ends: 92 [2018-01-21 10:25:41,962 INFO L226 Difference]: Without dead ends: 76 [2018-01-21 10:25:41,963 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:25:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-21 10:25:41,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2018-01-21 10:25:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-21 10:25:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2018-01-21 10:25:41,969 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2018-01-21 10:25:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:25:41,969 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2018-01-21 10:25:41,969 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:25:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2018-01-21 10:25:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-21 10:25:41,970 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:25:41,970 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, 1, 1, 1] [2018-01-21 10:25:41,970 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:25:41,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1373568971, now seen corresponding path program 1 times [2018-01-21 10:25:41,971 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:25:41,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:41,972 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:25:41,972 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:41,972 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:25:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:25:41,987 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:25:42,083 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 10:25:42,084 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:25:42,084 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 10:25:42,084 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:25:42,085 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:25:42,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:25:42,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:25:42,085 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2018-01-21 10:25:42,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:25:42,317 INFO L93 Difference]: Finished difference Result 169 states and 187 transitions. [2018-01-21 10:25:42,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 10:25:42,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2018-01-21 10:25:42,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:25:42,321 INFO L225 Difference]: With dead ends: 169 [2018-01-21 10:25:42,322 INFO L226 Difference]: Without dead ends: 145 [2018-01-21 10:25:42,322 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:25:42,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-21 10:25:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 79. [2018-01-21 10:25:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-21 10:25:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2018-01-21 10:25:42,333 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 42 [2018-01-21 10:25:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:25:42,333 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2018-01-21 10:25:42,333 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:25:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2018-01-21 10:25:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-21 10:25:42,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:25:42,335 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, 1, 1, 1] [2018-01-21 10:25:42,335 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:25:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1638677120, now seen corresponding path program 1 times [2018-01-21 10:25:42,336 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:25:42,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:42,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:25:42,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:42,337 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:25:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:25:42,353 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:25:42,413 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 10:25:42,413 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:25:42,413 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 10:25:42,414 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:25:42,414 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:25:42,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:25:42,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:25:42,414 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 6 states. [2018-01-21 10:25:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:25:42,558 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2018-01-21 10:25:42,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 10:25:42,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2018-01-21 10:25:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:25:42,559 INFO L225 Difference]: With dead ends: 134 [2018-01-21 10:25:42,560 INFO L226 Difference]: Without dead ends: 103 [2018-01-21 10:25:42,561 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:25:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-21 10:25:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2018-01-21 10:25:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-21 10:25:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2018-01-21 10:25:42,569 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 42 [2018-01-21 10:25:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:25:42,570 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2018-01-21 10:25:42,570 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:25:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2018-01-21 10:25:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-01-21 10:25:42,571 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:25:42,572 INFO L322 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:25:42,572 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:25:42,572 INFO L82 PathProgramCache]: Analyzing trace with hash -322223851, now seen corresponding path program 1 times [2018-01-21 10:25:42,572 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:25:42,573 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:42,573 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:25:42,574 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:25:42,574 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:25:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:25:42,602 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:25:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-21 10:25:42,657 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:25:42,658 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:25:42,659 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 54 with the following transitions: [2018-01-21 10:25:42,661 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [8], [10], [14], [16], [19], [25], [46], [48], [51], [57], [59], [60], [61], [62], [68], [70], [71], [72], [76], [77], [81], [83], [86], [96], [98], [101], [103], [104], [105], [109], [116], [118], [122], [124], [127], [137], [138], [139], [146], [147], [152], [159], [160], [161], [162] [2018-01-21 10:25:42,709 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:25:42,709 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:25:48,104 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (distinct Int Bool) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:399) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:157) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (distinct Int Bool) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:321) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:296) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.term(DiffWrapperScript.java:286) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.CongruenceClosureSmtUtils.lambda$1(CongruenceClosureSmtUtils.java:29) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.CongruenceClosureSmtUtils.congruenceClosureToCube(CongruenceClosureSmtUtils.java:30) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCcManager.weqCcToTerm(WeqCcManager.java:935) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.EqConstraint.getTerm(EqConstraint.java:185) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.EqDisjunctiveConstraint.lambda$2(EqDisjunctiveConstraint.java:121) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1548) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.EqDisjunctiveConstraint.getTerm(EqDisjunctiveConstraint.java:121) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqPredicate.(EqPredicate.java:64) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqStateFactory.stateToPredicate(EqStateFactory.java:112) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqState.toEqPredicate(EqState.java:224) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqPostOperator.apply(EqPostOperator.java:121) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqPostOperator.apply(EqPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$16(DisjunctiveAbstractState.java:363) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:443) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:363) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:148) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:388) ... 21 more [2018-01-21 10:25:48,108 INFO L168 Benchmark]: Toolchain (without parser) took 7409.06 ms. Allocated memory was 300.4 MB in the beginning and 871.4 MB in the end (delta: 570.9 MB). Free memory was 258.7 MB in the beginning and 709.0 MB in the end (delta: -450.3 MB). Peak memory consumption was 120.7 MB. Max. memory is 5.3 GB. [2018-01-21 10:25:48,109 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 300.4 MB. Free memory is still 264.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:25:48,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.69 ms. Allocated memory is still 300.4 MB. Free memory was 257.7 MB in the beginning and 246.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:25:48,109 INFO L168 Benchmark]: Boogie Preprocessor took 42.05 ms. Allocated memory is still 300.4 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:25:48,110 INFO L168 Benchmark]: RCFGBuilder took 324.00 ms. Allocated memory is still 300.4 MB. Free memory was 244.7 MB in the beginning and 222.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. [2018-01-21 10:25:48,110 INFO L168 Benchmark]: TraceAbstraction took 6822.12 ms. Allocated memory was 300.4 MB in the beginning and 871.4 MB in the end (delta: 570.9 MB). Free memory was 221.0 MB in the beginning and 709.0 MB in the end (delta: -488.0 MB). Peak memory consumption was 83.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:25:48,111 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 300.4 MB. Free memory is still 264.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 213.69 ms. Allocated memory is still 300.4 MB. Free memory was 257.7 MB in the beginning and 246.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 42.05 ms. Allocated memory is still 300.4 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 324.00 ms. Allocated memory is still 300.4 MB. Free memory was 244.7 MB in the beginning and 222.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6822.12 ms. Allocated memory was 300.4 MB in the beginning and 871.4 MB in the end (delta: 570.9 MB). Free memory was 221.0 MB in the beginning and 709.0 MB in the end (delta: -488.0 MB). Peak memory consumption was 83.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 525]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: exitErr0EnsuresViolation CFG has 4 procedures, 72 locations, 4 error locations. SAFE Result, 0.1s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 13 PreInvPairs, 13 NumberOfFragments, 11 HoareAnnotationTreeSize, 13 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, 72 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=69occurred 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 - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (distinct Int Bool) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (distinct Int Bool): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:399) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list-ext_false-unreach-call_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-25-48-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list-ext_false-unreach-call_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-25-48-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list-ext_false-unreach-call_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-25-48-118.csv Received shutdown request...