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.epf -i ../../../trunk/examples/svcomp/list-properties/simple_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:04:50,624 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:04:50,625 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:04:50,641 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:04:50,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:04:50,642 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:04:50,643 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:04:50,645 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:04:50,647 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:04:50,647 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:04:50,648 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:04:50,649 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:04:50,649 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:04:50,651 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:04:50,652 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:04:50,654 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:04:50,656 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:04:50,658 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:04:50,660 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:04:50,661 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:04:50,663 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 00:04:50,664 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 00:04:50,664 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 00:04:50,665 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 00:04:50,666 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 00:04:50,667 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 00:04:50,667 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 00:04:50,668 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 00:04:50,668 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 00:04:50,668 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 00:04:50,669 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 00:04:50,669 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.epf [2018-01-21 00:04:50,678 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:04:50,678 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:04:50,679 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:04:50,679 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:04:50,679 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:04:50,679 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:04:50,679 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:04:50,680 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:04:50,680 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:04:50,680 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:04:50,680 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:04:50,680 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:04:50,680 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:04:50,681 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:04:50,681 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:04:50,681 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:04:50,681 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:04:50,681 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:04:50,681 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:04:50,681 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:04:50,681 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:04:50,682 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:04:50,682 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:04:50,682 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:04:50,682 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:04:50,682 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:04:50,683 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:04:50,683 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:04:50,683 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:04:50,683 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:04:50,683 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:04:50,683 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:04:50,683 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:04:50,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:04:50,683 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:04:50,684 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:04:50,684 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:04:50,684 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:04:50,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:04:50,727 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:04:50,729 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:04:50,730 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:04:50,731 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:04:50,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-01-21 00:04:50,884 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:04:50,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:04:50,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:04:50,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:04:50,896 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:04:50,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:04:50" (1/1) ... [2018-01-21 00:04:50,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793dbc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:50, skipping insertion in model container [2018-01-21 00:04:50,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:04:50" (1/1) ... [2018-01-21 00:04:50,914 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:04:50,951 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:04:51,070 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:04:51,090 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:04:51,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51 WrapperNode [2018-01-21 00:04:51,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:04:51,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:04:51,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:04:51,099 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:04:51,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (1/1) ... [2018-01-21 00:04:51,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (1/1) ... [2018-01-21 00:04:51,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (1/1) ... [2018-01-21 00:04:51,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (1/1) ... [2018-01-21 00:04:51,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (1/1) ... [2018-01-21 00:04:51,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (1/1) ... [2018-01-21 00:04:51,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (1/1) ... [2018-01-21 00:04:51,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:04:51,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:04:51,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:04:51,134 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:04:51,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (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 00:04:51,180 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:04:51,181 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:04:51,181 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 00:04:51,181 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:04:51,181 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:04:51,181 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:04:51,181 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 00:04:51,182 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 00:04:51,182 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:04:51,182 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:04:51,182 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:04:51,182 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 00:04:51,182 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:04:51,183 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:04:51,183 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 00:04:51,183 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:04:51,183 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:04:51,183 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:04:51,378 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:04:51,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:04:51 BoogieIcfgContainer [2018-01-21 00:04:51,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:04:51,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:04:51,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:04:51,382 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:04:51,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:04:50" (1/3) ... [2018-01-21 00:04:51,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68322e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:04:51, skipping insertion in model container [2018-01-21 00:04:51,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:04:51" (2/3) ... [2018-01-21 00:04:51,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68322e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:04:51, skipping insertion in model container [2018-01-21 00:04:51,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:04:51" (3/3) ... [2018-01-21 00:04:51,385 INFO L105 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-01-21 00:04:51,393 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:04:51,399 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 00:04:51,443 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:04:51,443 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:04:51,443 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:04:51,444 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:04:51,444 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:04:51,444 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:04:51,444 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:04:51,444 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 00:04:51,445 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:04:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 00:04:51,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:04:51,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 41 states. [2018-01-21 00:04:51,561 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 00:04:51,561 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-21 00:04:51,562 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-21 00:04:51,562 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-21 00:04:51,562 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-21 00:04:51,562 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 648) no Hoare annotation was computed. [2018-01-21 00:04:51,562 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 648) no Hoare annotation was computed. [2018-01-21 00:04:51,562 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 648) the Hoare annotation is: true [2018-01-21 00:04:51,562 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 648) no Hoare annotation was computed. [2018-01-21 00:04:51,563 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 648) the Hoare annotation is: true [2018-01-21 00:04:51,563 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 648) no Hoare annotation was computed. [2018-01-21 00:04:51,563 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 648) the Hoare annotation is: true [2018-01-21 00:04:51,563 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 648) no Hoare annotation was computed. [2018-01-21 00:04:51,563 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 648) no Hoare annotation was computed. [2018-01-21 00:04:51,563 INFO L401 ceAbstractionStarter]: For program point L627(line 627) no Hoare annotation was computed. [2018-01-21 00:04:51,564 INFO L401 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-01-21 00:04:51,564 INFO L401 ceAbstractionStarter]: For program point L631'(lines 631 637) no Hoare annotation was computed. [2018-01-21 00:04:51,564 INFO L404 ceAbstractionStarter]: At program point L631'''(lines 631 637) the Hoare annotation is: true [2018-01-21 00:04:51,564 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 648) no Hoare annotation was computed. [2018-01-21 00:04:51,564 INFO L401 ceAbstractionStarter]: For program point L642'''(lines 642 644) no Hoare annotation was computed. [2018-01-21 00:04:51,564 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 648) no Hoare annotation was computed. [2018-01-21 00:04:51,564 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 648) the Hoare annotation is: true [2018-01-21 00:04:51,565 INFO L401 ceAbstractionStarter]: For program point L632'(line 632) no Hoare annotation was computed. [2018-01-21 00:04:51,565 INFO L401 ceAbstractionStarter]: For program point L631''''(lines 631 637) no Hoare annotation was computed. [2018-01-21 00:04:51,565 INFO L404 ceAbstractionStarter]: At program point L628'(line 628) the Hoare annotation is: true [2018-01-21 00:04:51,565 INFO L401 ceAbstractionStarter]: For program point L641(lines 641 646) no Hoare annotation was computed. [2018-01-21 00:04:51,565 INFO L404 ceAbstractionStarter]: At program point L641''(lines 641 646) the Hoare annotation is: true [2018-01-21 00:04:51,565 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-21 00:04:51,565 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 00:04:51,565 INFO L401 ceAbstractionStarter]: For program point L642(line 642) no Hoare annotation was computed. [2018-01-21 00:04:51,565 INFO L401 ceAbstractionStarter]: For program point L628'''(line 628) no Hoare annotation was computed. [2018-01-21 00:04:51,565 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 648) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L633(line 633) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L632(line 632) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L631(lines 631 637) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L638(line 638) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L635(line 635) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L641'''(lines 641 646) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-21 00:04:51,566 INFO L404 ceAbstractionStarter]: At program point L634'(line 634) the Hoare annotation is: true [2018-01-21 00:04:51,567 INFO L401 ceAbstractionStarter]: For program point L642'(line 642) no Hoare annotation was computed. [2018-01-21 00:04:51,567 INFO L401 ceAbstractionStarter]: For program point L634'''(line 634) no Hoare annotation was computed. [2018-01-21 00:04:51,570 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:04:51,570 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:04:51,570 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:04:51,570 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:04:51,570 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:04:51,570 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:04:51,570 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:04:51,571 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:04:51,571 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:04:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 00:04:51,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:04:51,573 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:04:51,575 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:04:51,575 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:04:51,580 INFO L82 PathProgramCache]: Analyzing trace with hash 111860, now seen corresponding path program 1 times [2018-01-21 00:04:51,583 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:04:51,605 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:51,606 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:04:51,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:51,606 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:04:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:04:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:04:51,654 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:04:51,658 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:04:51,662 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:04:51,663 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:04:51,663 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:04:51,663 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:04:51,663 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:04:51,663 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:04:51,663 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:04:51,663 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:04:51,663 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:04:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 00:04:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 00:04:51,666 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:04:51,666 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:04:51,666 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:04:51,666 INFO L82 PathProgramCache]: Analyzing trace with hash 531101053, now seen corresponding path program 1 times [2018-01-21 00:04:51,667 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:04:51,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:51,668 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:04:51,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:51,669 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:04:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:04:51,693 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:04:51,727 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 00:04:51,729 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:04:51,729 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:04:51,729 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:04:51,730 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:04:51,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:04:51,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:04:51,743 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-21 00:04:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:04:51,826 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-01-21 00:04:51,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:04:51,827 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 00:04:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:04:51,834 INFO L225 Difference]: With dead ends: 58 [2018-01-21 00:04:51,835 INFO L226 Difference]: Without dead ends: 33 [2018-01-21 00:04:51,838 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 00:04:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-21 00:04:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-21 00:04:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-21 00:04:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-01-21 00:04:51,867 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 18 [2018-01-21 00:04:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:04:51,867 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-01-21 00:04:51,867 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:04:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-01-21 00:04:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 00:04:51,868 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:04:51,868 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 00:04:51,868 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:04:51,868 INFO L82 PathProgramCache]: Analyzing trace with hash 403826474, now seen corresponding path program 1 times [2018-01-21 00:04:51,868 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:04:51,870 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:51,870 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:04:51,870 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:51,870 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:04:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:04:51,896 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:04:51,978 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 00:04:51,978 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:04:51,978 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 00:04:51,979 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:04:51,980 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:04:51,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:04:51,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:04:51,981 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2018-01-21 00:04:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:04:52,110 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-01-21 00:04:52,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:04:52,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-21 00:04:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:04:52,112 INFO L225 Difference]: With dead ends: 57 [2018-01-21 00:04:52,112 INFO L226 Difference]: Without dead ends: 52 [2018-01-21 00:04:52,113 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:04:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-21 00:04:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 35. [2018-01-21 00:04:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 00:04:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-01-21 00:04:52,120 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 21 [2018-01-21 00:04:52,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:04:52,120 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-01-21 00:04:52,120 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:04:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-01-21 00:04:52,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 00:04:52,121 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:04:52,121 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:04:52,122 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:04:52,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1062535480, now seen corresponding path program 1 times [2018-01-21 00:04:52,122 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:04:52,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:52,123 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:04:52,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:52,123 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:04:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:04:52,141 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:04:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:04:52,190 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:04:52,190 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 00:04:52,190 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:04:52,191 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 00:04:52,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 00:04:52,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 00:04:52,191 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 4 states. [2018-01-21 00:04:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:04:52,229 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-01-21 00:04:52,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 00:04:52,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 00:04:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:04:52,231 INFO L225 Difference]: With dead ends: 56 [2018-01-21 00:04:52,231 INFO L226 Difference]: Without dead ends: 40 [2018-01-21 00:04:52,232 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 00:04:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-21 00:04:52,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-01-21 00:04:52,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-21 00:04:52,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-01-21 00:04:52,238 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 27 [2018-01-21 00:04:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:04:52,238 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-01-21 00:04:52,238 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 00:04:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-01-21 00:04:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 00:04:52,239 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:04:52,240 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:04:52,240 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:04:52,240 INFO L82 PathProgramCache]: Analyzing trace with hash -571757697, now seen corresponding path program 1 times [2018-01-21 00:04:52,240 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:04:52,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:52,241 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:04:52,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:04:52,241 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:04:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:04:52,271 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:04:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:04:52,461 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:04:52,461 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 00:04:52,462 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-21 00:04:52,464 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [9], [13], [15], [18], [20], [21], [22], [23], [29], [31], [32], [33], [37], [38], [39], [43], [47], [49], [50], [57], [59], [60], [64], [65], [72], [73], [78], [83], [84], [85], [86] [2018-01-21 00:04:52,514 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:04:52,515 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 00:05:58,411 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 00:05:58,412 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 00:05:58,412 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:05:58,412 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:05:58,413 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 00:05:58,421 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:05:58,421 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:05:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:05:58,470 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:05:58,474 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 00:05:58,475 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 00:05:58,477 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:05:58,477 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:05:58,477 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:05:58,477 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:05:58,477 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:05:58,477 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:05:58,477 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:05:58,478 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:05:58,478 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:05:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 00:05:58,479 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 00:05:58,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:05:58 BoogieIcfgContainer [2018-01-21 00:05:58,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:05:58,482 INFO L168 Benchmark]: Toolchain (without parser) took 67596.76 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 262.9 MB in the beginning and 943.8 MB in the end (delta: -680.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-21 00:05:58,483 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:05:58,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.87 ms. Allocated memory is still 304.6 MB. Free memory was 261.9 MB in the beginning and 252.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:05:58,484 INFO L168 Benchmark]: Boogie Preprocessor took 34.81 ms. Allocated memory is still 304.6 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:05:58,484 INFO L168 Benchmark]: RCFGBuilder took 244.95 ms. Allocated memory is still 304.6 MB. Free memory was 250.0 MB in the beginning and 233.4 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-21 00:05:58,485 INFO L168 Benchmark]: TraceAbstraction took 67101.06 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 232.4 MB in the beginning and 943.8 MB in the end (delta: -711.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-21 00:05:58,487 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 208.87 ms. Allocated memory is still 304.6 MB. Free memory was 261.9 MB in the beginning and 252.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.81 ms. Allocated memory is still 304.6 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 244.95 ms. Allocated memory is still 304.6 MB. Free memory was 250.0 MB in the beginning and 233.4 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 67101.06 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 232.4 MB in the beginning and 943.8 MB in the end (delta: -711.4 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) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 525]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: exitErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. SAFE Result, 0.1s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 9 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. TIMEOUT Result, 66.8s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 96 SDtfs, 95 SDslu, 79 SDs, 0 SdLazy, 42 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 65.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 626]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 626). Cancelled while IsEmpty was searching accepting run (input had 41 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-05-58-494.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-05-58-494.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-05-58-494.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-05-58-494.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-05-58-494.csv Completed graceful shutdown