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_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:30:44,803 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:30:44,806 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:30:44,821 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:30:44,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:30:44,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:30:44,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:30:44,826 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:30:44,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:30:44,829 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:30:44,830 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:30:44,830 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:30:44,831 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:30:44,832 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:30:44,833 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:30:44,836 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:30:44,838 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:30:44,840 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:30:44,842 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:30:44,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:30:44,846 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:30:44,851 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:30:44,851 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:30:44,852 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_precise.epf [2018-01-21 05:30:44,862 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:30:44,863 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:30:44,863 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:30:44,864 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:30:44,864 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:30:44,864 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:30:44,864 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:30:44,865 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:30:44,865 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:30:44,866 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:30:44,866 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:30:44,866 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:30:44,866 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:30:44,866 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:30:44,867 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:30:44,867 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:30:44,867 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:30:44,867 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:30:44,867 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:30:44,867 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:30:44,868 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:30:44,868 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:30:44,868 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:30:44,868 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:30:44,868 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:30:44,869 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:30:44,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:30:44,869 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:30:44,869 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:30:44,870 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:30:44,870 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:30:44,870 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:30:44,870 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:30:44,870 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:30:44,870 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:30:44,871 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:30:44,871 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:30:44,872 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:30:44,872 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:30:44,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:30:44,923 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:30:44,928 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:30:44,930 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:30:44,930 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:30:44,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-21 05:30:45,223 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:30:45,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:30:45,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:30:45,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:30:45,234 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:30:45,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3072b9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45, skipping insertion in model container [2018-01-21 05:30:45,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,256 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:30:45,297 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:30:45,421 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:30:45,437 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:30:45,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45 WrapperNode [2018-01-21 05:30:45,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:30:45,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:30:45,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:30:45,447 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:30:45,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (1/1) ... [2018-01-21 05:30:45,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:30:45,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:30:45,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:30:45,486 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:30:45,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (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 05:30:45,541 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:30:45,541 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:30:45,541 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:30:45,541 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:30:45,541 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:30:45,541 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:30:45,541 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:30:45,542 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:30:45,542 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:30:45,542 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:30:45,542 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:30:45,542 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:30:45,741 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:30:45,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:30:45 BoogieIcfgContainer [2018-01-21 05:30:45,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:30:45,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:30:45,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:30:45,745 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:30:45,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:30:45" (1/3) ... [2018-01-21 05:30:45,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ca65f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:30:45, skipping insertion in model container [2018-01-21 05:30:45,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:30:45" (2/3) ... [2018-01-21 05:30:45,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ca65f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:30:45, skipping insertion in model container [2018-01-21 05:30:45,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:30:45" (3/3) ... [2018-01-21 05:30:45,749 INFO L105 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-21 05:30:45,756 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:30:45,763 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 05:30:45,829 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:30:45,829 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:30:45,829 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:30:45,829 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:30:45,829 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:30:45,829 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:30:45,829 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:30:45,829 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:30:45,830 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:30:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 05:30:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:30:45,865 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:30:45,866 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:30:45,866 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:30:45,871 INFO L82 PathProgramCache]: Analyzing trace with hash 109556, now seen corresponding path program 1 times [2018-01-21 05:30:45,873 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:30:45,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:45,916 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:30:45,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:45,917 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:30:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:30:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:30:45,974 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:30:45,980 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:30:45,986 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:30:45,986 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:30:45,986 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:30:45,987 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:30:45,987 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:30:45,987 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:30:45,987 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:30:45,987 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:30:45,987 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:30:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 05:30:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 05:30:45,990 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:30:45,990 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] [2018-01-21 05:30:45,990 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:30:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash 964801099, now seen corresponding path program 1 times [2018-01-21 05:30:45,990 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:30:45,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:45,992 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:30:45,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:45,992 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:30:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:30:46,111 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:30:46,146 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 05:30:46,148 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:30:46,148 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:30:46,148 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:30:46,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:30:46,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:30:46,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:30:46,228 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-01-21 05:30:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:30:46,246 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2018-01-21 05:30:46,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:30:46,248 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 05:30:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:30:46,260 INFO L225 Difference]: With dead ends: 70 [2018-01-21 05:30:46,260 INFO L226 Difference]: Without dead ends: 42 [2018-01-21 05:30:46,263 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 05:30:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-21 05:30:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-01-21 05:30:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-21 05:30:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2018-01-21 05:30:46,295 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 20 [2018-01-21 05:30:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:30:46,295 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2018-01-21 05:30:46,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:30:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2018-01-21 05:30:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 05:30:46,296 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:30:46,296 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 05:30:46,296 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:30:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash -342950740, now seen corresponding path program 1 times [2018-01-21 05:30:46,297 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:30:46,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:46,298 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:30:46,298 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:46,298 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:30:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:30:46,321 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:30:46,485 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 05:30:46,486 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:30:46,486 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:30:46,486 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:30:46,488 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:30:46,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:30:46,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:30:46,489 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 3 states. [2018-01-21 05:30:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:30:46,534 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2018-01-21 05:30:46,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:30:46,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-21 05:30:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:30:46,539 INFO L225 Difference]: With dead ends: 109 [2018-01-21 05:30:46,540 INFO L226 Difference]: Without dead ends: 75 [2018-01-21 05:30:46,541 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 05:30:46,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-21 05:30:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 43. [2018-01-21 05:30:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-21 05:30:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-01-21 05:30:46,549 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 25 [2018-01-21 05:30:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:30:46,549 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-01-21 05:30:46,550 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:30:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-01-21 05:30:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 05:30:46,551 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:30:46,551 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 05:30:46,551 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:30:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1957871850, now seen corresponding path program 1 times [2018-01-21 05:30:46,552 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:30:46,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:46,553 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:30:46,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:46,553 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:30:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:30:46,572 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:30:46,625 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 05:30:46,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:30:46,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 05:30:46,626 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:30:46,627 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:30:46,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:30:46,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:30:46,628 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 4 states. [2018-01-21 05:30:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:30:46,786 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-01-21 05:30:46,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 05:30:46,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-21 05:30:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:30:46,788 INFO L225 Difference]: With dead ends: 75 [2018-01-21 05:30:46,789 INFO L226 Difference]: Without dead ends: 52 [2018-01-21 05:30:46,789 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:30:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-21 05:30:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2018-01-21 05:30:46,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-01-21 05:30:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-01-21 05:30:46,796 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 25 [2018-01-21 05:30:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:30:46,796 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-01-21 05:30:46,796 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:30:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-01-21 05:30:46,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 05:30:46,797 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:30:46,798 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, 1, 1, 1] [2018-01-21 05:30:46,798 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:30:46,798 INFO L82 PathProgramCache]: Analyzing trace with hash -92922, now seen corresponding path program 1 times [2018-01-21 05:30:46,798 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:30:46,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:46,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:30:46,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:30:46,799 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:30:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:30:46,826 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:30:47,235 WARN L146 SmtUtils]: Spent 164ms on a formula simplification. DAG size of input: 64 DAG size of output 32 [2018-01-21 05:30:47,410 WARN L146 SmtUtils]: Spent 157ms on a formula simplification. DAG size of input: 71 DAG size of output 39 [2018-01-21 05:30:47,591 WARN L146 SmtUtils]: Spent 153ms on a formula simplification. DAG size of input: 71 DAG size of output 39 [2018-01-21 05:30:47,739 WARN L146 SmtUtils]: Spent 122ms on a formula simplification. DAG size of input: 62 DAG size of output 36 [2018-01-21 05:30:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:30:47,911 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 05:30:47,911 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 05:30:47,912 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 05:30:47,914 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [10], [18], [20], [21], [25], [28], [30], [31], [40], [42], [46], [47], [51], [53], [54], [61], [65], [78], [79], [80], [81], [83], [84], [85], [86] [2018-01-21 05:30:47,974 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 05:30:47,974 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 05:31:53,785 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 05:31:53,786 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 05:31:53,889 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 05:31:53,889 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 05:31:53,889 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 05:31:53,977 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:31:53,977 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 05:31:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:31:54,178 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 05:31:54,318 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 05:31:54,319 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 05:31:54,321 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:31:54,321 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:31:54,322 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:31:54,322 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:31:54,322 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:31:54,322 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:31:54,322 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:31:54,322 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:31:54,322 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:31:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 05:31:54,324 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 05:31:54,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:31:54 BoogieIcfgContainer [2018-01-21 05:31:54,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:31:54,326 INFO L168 Benchmark]: Toolchain (without parser) took 69102.63 ms. Allocated memory was 307.2 MB in the beginning and 1.2 GB in the end (delta: 911.7 MB). Free memory was 266.2 MB in the beginning and 962.7 MB in the end (delta: -696.5 MB). Peak memory consumption was 215.2 MB. Max. memory is 5.3 GB. [2018-01-21 05:31:54,327 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 307.2 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:31:54,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.30 ms. Allocated memory is still 307.2 MB. Free memory was 266.2 MB in the beginning and 256.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:31:54,328 INFO L168 Benchmark]: Boogie Preprocessor took 39.00 ms. Allocated memory is still 307.2 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:31:54,328 INFO L168 Benchmark]: RCFGBuilder took 255.99 ms. Allocated memory is still 307.2 MB. Free memory was 254.2 MB in the beginning and 237.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:31:54,329 INFO L168 Benchmark]: TraceAbstraction took 68582.97 ms. Allocated memory was 307.2 MB in the beginning and 1.2 GB in the end (delta: 911.7 MB). Free memory was 237.2 MB in the beginning and 962.7 MB in the end (delta: -725.4 MB). Peak memory consumption was 186.3 MB. Max. memory is 5.3 GB. [2018-01-21 05:31:54,331 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 307.2 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 217.30 ms. Allocated memory is still 307.2 MB. Free memory was 266.2 MB in the beginning and 256.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 39.00 ms. Allocated memory is still 307.2 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 255.99 ms. Allocated memory is still 307.2 MB. Free memory was 254.2 MB in the beginning and 237.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 68582.97 ms. Allocated memory was 307.2 MB in the beginning and 1.2 GB in the end (delta: 911.7 MB). Free memory was 237.2 MB in the beginning and 962.7 MB in the end (delta: -725.4 MB). Peak memory consumption was 186.3 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: - 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 3 procedures, 45 locations, 3 error locations. UNSAFE Result, 0.1s 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=45occurred 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 31 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 45 locations, 3 error locations. TIMEOUT Result, 68.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 127 SDtfs, 87 SDslu, 69 SDs, 0 SdLazy, 40 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 65.8s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 39 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 2137 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 540]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 540). Cancelled while IsEmpty was searching accepting run (input had 45 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 45 locations, 3 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=45occurred 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/reverse_array_alloca_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-31-54-338.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/reverse_array_alloca_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-31-54-338.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/reverse_array_alloca_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-31-54-338.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/reverse_array_alloca_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-31-54-338.csv Completed graceful shutdown