java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:54:08,988 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:54:08,990 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:54:09,002 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:54:09,003 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:54:09,003 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:54:09,004 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:54:09,005 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:54:09,007 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:54:09,008 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:54:09,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:54:09,009 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:54:09,010 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:54:09,012 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:54:09,013 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:54:09,015 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:54:09,017 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:54:09,019 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:54:09,020 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:54:09,022 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:54:09,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:54:09,029 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:54:09,029 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:54:09,030 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-21 10:54:09,039 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:54:09,039 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:54:09,040 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:54:09,040 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:54:09,041 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:54:09,041 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:54:09,041 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:54:09,041 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:54:09,042 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:54:09,042 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:54:09,042 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:54:09,042 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:54:09,042 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:54:09,043 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:54:09,043 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:54:09,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:54:09,043 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:54:09,043 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:54:09,043 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:54:09,044 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:54:09,044 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:54:09,044 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:54:09,044 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:54:09,044 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:54:09,045 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:54:09,045 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:54:09,045 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:54:09,045 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:54:09,045 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:54:09,046 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:54:09,046 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:54:09,046 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:54:09,046 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:54:09,046 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:54:09,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:54:09,047 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:54:09,047 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:54:09,048 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:54:09,048 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:54:09,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:54:09,090 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:54:09,093 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:54:09,094 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:54:09,095 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:54:09,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 10:54:09,281 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:54:09,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:54:09,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:54:09,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:54:09,291 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:54:09,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeba7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09, skipping insertion in model container [2018-01-21 10:54:09,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,308 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:54:09,346 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:54:09,464 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:54:09,486 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:54:09,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09 WrapperNode [2018-01-21 10:54:09,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:54:09,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:54:09,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:54:09,497 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:54:09,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (1/1) ... [2018-01-21 10:54:09,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:54:09,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:54:09,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:54:09,538 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:54:09,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:54:09,585 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:54:09,585 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:54:09,585 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:54:09,585 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:54:09,585 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:54:09,585 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:54:09,586 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:54:09,833 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:54:09,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:54:09 BoogieIcfgContainer [2018-01-21 10:54:09,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:54:09,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:54:09,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:54:09,836 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:54:09,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:54:09" (1/3) ... [2018-01-21 10:54:09,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce05999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:54:09, skipping insertion in model container [2018-01-21 10:54:09,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:54:09" (2/3) ... [2018-01-21 10:54:09,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce05999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:54:09, skipping insertion in model container [2018-01-21 10:54:09,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:54:09" (3/3) ... [2018-01-21 10:54:09,839 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 10:54:09,846 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:54:09,852 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 10:54:09,896 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:54:09,897 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:54:09,897 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:54:09,897 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:54:09,897 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:54:09,897 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:54:09,897 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:54:09,897 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:54:09,898 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:54:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-21 10:54:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:54:09,917 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:54:09,918 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:54:09,918 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:54:09,922 INFO L82 PathProgramCache]: Analyzing trace with hash 186463, now seen corresponding path program 1 times [2018-01-21 10:54:09,925 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:54:09,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:09,964 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:54:09,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:09,965 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:54:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:54:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:54:10,016 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:54:10,023 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:54:10,028 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:54:10,029 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:54:10,029 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:54:10,029 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:54:10,029 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:54:10,029 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:54:10,029 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:54:10,029 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:54:10,029 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:54:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-21 10:54:10,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 10:54:10,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:54:10,034 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] [2018-01-21 10:54:10,034 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:54:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash 128587636, now seen corresponding path program 1 times [2018-01-21 10:54:10,035 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:54:10,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:10,036 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:54:10,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:10,037 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:54:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:54:10,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:54:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:54:10,118 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:54:10,118 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:54:10,118 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:54:10,121 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:54:10,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:54:10,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:54:10,222 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2018-01-21 10:54:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:54:10,244 INFO L93 Difference]: Finished difference Result 119 states and 155 transitions. [2018-01-21 10:54:10,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:54:10,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-01-21 10:54:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:54:10,254 INFO L225 Difference]: With dead ends: 119 [2018-01-21 10:54:10,254 INFO L226 Difference]: Without dead ends: 62 [2018-01-21 10:54:10,256 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:54:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-21 10:54:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-01-21 10:54:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-21 10:54:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2018-01-21 10:54:10,287 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 24 [2018-01-21 10:54:10,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:54:10,288 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2018-01-21 10:54:10,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:54:10,288 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2018-01-21 10:54:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 10:54:10,289 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:54:10,289 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:54:10,289 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:54:10,289 INFO L82 PathProgramCache]: Analyzing trace with hash 724775855, now seen corresponding path program 1 times [2018-01-21 10:54:10,289 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:54:10,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:10,290 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:54:10,291 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:10,291 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:54:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:54:10,326 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:54:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:54:11,103 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:54:11,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-21 10:54:11,103 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:54:11,105 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-21 10:54:11,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-21 10:54:11,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-01-21 10:54:11,106 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 12 states. [2018-01-21 10:54:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:54:11,621 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2018-01-21 10:54:11,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 10:54:11,621 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-01-21 10:54:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:54:11,626 INFO L225 Difference]: With dead ends: 128 [2018-01-21 10:54:11,626 INFO L226 Difference]: Without dead ends: 114 [2018-01-21 10:54:11,628 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2018-01-21 10:54:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-21 10:54:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 74. [2018-01-21 10:54:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-21 10:54:11,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2018-01-21 10:54:11,640 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2018-01-21 10:54:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:54:11,641 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2018-01-21 10:54:11,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-21 10:54:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2018-01-21 10:54:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-21 10:54:11,642 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:54:11,643 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:54:11,643 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:54:11,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1505215911, now seen corresponding path program 1 times [2018-01-21 10:54:11,644 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:54:11,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:11,645 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:54:11,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:11,645 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:54:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:54:11,662 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:54:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:54:11,701 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:54:11,701 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 10:54:11,701 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:54:11,702 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:54:11,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:54:11,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:54:11,702 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 3 states. [2018-01-21 10:54:11,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:54:11,752 INFO L93 Difference]: Finished difference Result 175 states and 194 transitions. [2018-01-21 10:54:11,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:54:11,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-01-21 10:54:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:54:11,757 INFO L225 Difference]: With dead ends: 175 [2018-01-21 10:54:11,757 INFO L226 Difference]: Without dead ends: 123 [2018-01-21 10:54:11,758 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:54:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-21 10:54:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 89. [2018-01-21 10:54:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-21 10:54:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2018-01-21 10:54:11,769 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 41 [2018-01-21 10:54:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:54:11,770 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2018-01-21 10:54:11,770 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:54:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2018-01-21 10:54:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-21 10:54:11,772 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:54:11,772 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:54:11,772 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:54:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash 977083296, now seen corresponding path program 1 times [2018-01-21 10:54:11,772 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:54:11,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:11,773 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:54:11,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:11,774 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:54:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:54:11,793 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:54:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:54:12,347 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:54:12,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-01-21 10:54:12,347 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:54:12,347 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-21 10:54:12,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-21 10:54:12,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-21 10:54:12,348 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 13 states. [2018-01-21 10:54:12,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:54:12,721 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2018-01-21 10:54:12,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-21 10:54:12,741 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2018-01-21 10:54:12,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:54:12,742 INFO L225 Difference]: With dead ends: 159 [2018-01-21 10:54:12,742 INFO L226 Difference]: Without dead ends: 129 [2018-01-21 10:54:12,743 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2018-01-21 10:54:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-21 10:54:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 94. [2018-01-21 10:54:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-21 10:54:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2018-01-21 10:54:12,751 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 44 [2018-01-21 10:54:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:54:12,751 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2018-01-21 10:54:12,751 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-21 10:54:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2018-01-21 10:54:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-21 10:54:12,752 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:54:12,753 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:54:12,753 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:54:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1973007188, now seen corresponding path program 1 times [2018-01-21 10:54:12,753 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:54:12,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:12,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:54:12,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:54:12,754 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:54:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:54:12,773 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:54:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:54:13,258 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:54:13,258 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:54:13,259 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2018-01-21 10:54:13,260 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [8], [10], [13], [15], [16], [17], [18], [19], [20], [21], [37], [39], [43], [48], [52], [61], [62], [63], [67], [72], [76], [84], [86], [89], [128], [129], [133], [135], [138], [147], [148], [149], [151], [152], [157], [158], [159], [160], [161] [2018-01-21 10:54:13,307 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:54:13,307 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 10:55:14,323 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 10:55:14,324 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 10:55:14,339 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:55:14,340 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:55:14,340 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 10:55:14,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:55:14,346 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:55:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:55:14,408 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:55:14,414 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 10:55:14,414 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:55:14,416 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:55:14,416 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:55:14,417 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:55:14,417 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:55:14,417 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:55:14,417 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:55:14,417 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:55:14,417 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:55:14,417 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:55:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-21 10:55:14,419 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:55:14,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:55:14 BoogieIcfgContainer [2018-01-21 10:55:14,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:55:14,420 INFO L168 Benchmark]: Toolchain (without parser) took 65138.99 ms. Allocated memory was 306.7 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 265.0 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 334.2 MB. Max. memory is 5.3 GB. [2018-01-21 10:55:14,421 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 306.7 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:55:14,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.39 ms. Allocated memory is still 306.7 MB. Free memory was 264.0 MB in the beginning and 252.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:55:14,422 INFO L168 Benchmark]: Boogie Preprocessor took 40.80 ms. Allocated memory is still 306.7 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 10:55:14,422 INFO L168 Benchmark]: RCFGBuilder took 295.81 ms. Allocated memory is still 306.7 MB. Free memory was 250.0 MB in the beginning and 228.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 5.3 GB. [2018-01-21 10:55:14,423 INFO L168 Benchmark]: TraceAbstraction took 64585.41 ms. Allocated memory was 306.7 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 228.4 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 297.6 MB. Max. memory is 5.3 GB. [2018-01-21 10:55:14,425 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 306.7 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 210.39 ms. Allocated memory is still 306.7 MB. Free memory was 264.0 MB in the beginning and 252.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.80 ms. Allocated memory is still 306.7 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 295.81 ms. Allocated memory is still 306.7 MB. Free memory was 250.0 MB in the beginning and 228.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 64585.41 ms. Allocated memory was 306.7 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 228.4 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 297.6 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, 65 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=65occurred 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 47 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 65 locations, 3 error locations. TIMEOUT Result, 64.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 252 SDtfs, 617 SDslu, 626 SDs, 0 SdLazy, 465 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 61.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 109 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 37843 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 982]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 982). Cancelled while IsEmpty was searching accepting run (input had 65 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 65 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=65occurred 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/sll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-55-14-435.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-55-14-435.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-55-14-435.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-55-14-435.csv Completed graceful shutdown