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_preciseopt.epf -i ../../../trunk/examples/svcomp/array-examples/relax_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:18:20,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:18:20,847 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:18:20,860 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:18:20,860 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:18:20,861 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:18:20,862 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:18:20,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:18:20,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:18:20,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:18:20,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:18:20,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:18:20,866 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:18:20,868 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:18:20,869 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:18:20,872 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:18:20,874 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:18:20,876 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:18:20,877 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:18:20,878 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:18:20,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:18:20,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:18:20,887 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:18:20,887 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_preciseopt.epf [2018-01-21 08:18:20,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:18:20,898 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:18:20,898 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:18:20,899 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:18:20,899 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:18:20,899 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:18:20,899 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:18:20,900 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:18:20,900 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:18:20,900 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:18:20,901 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:18:20,901 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:18:20,901 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:18:20,901 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:18:20,901 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:18:20,902 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:18:20,902 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:18:20,902 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:18:20,902 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:18:20,902 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:18:20,903 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:18:20,903 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:18:20,903 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:18:20,903 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:18:20,903 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:18:20,904 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:18:20,904 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:18:20,904 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:18:20,904 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:18:20,904 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:18:20,905 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:18:20,905 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:18:20,905 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:18:20,905 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:18:20,905 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:18:20,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:18:20,906 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:18:20,906 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:18:20,907 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:18:20,907 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:18:20,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:18:20,955 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:18:20,960 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:18:20,961 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:18:20,962 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:18:20,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/relax_false-valid-deref.i [2018-01-21 08:18:21,144 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:18:21,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:18:21,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:18:21,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:18:21,153 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:18:21,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44478139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21, skipping insertion in model container [2018-01-21 08:18:21,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,175 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:18:21,218 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:18:21,336 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:18:21,361 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:18:21,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21 WrapperNode [2018-01-21 08:18:21,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:18:21,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:18:21,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:18:21,371 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:18:21,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (1/1) ... [2018-01-21 08:18:21,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:18:21,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:18:21,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:18:21,407 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:18:21,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (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 08:18:21,457 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:18:21,458 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:18:21,458 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-21 08:18:21,458 INFO L136 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2018-01-21 08:18:21,458 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:18:21,458 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:18:21,458 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:18:21,458 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:18:21,458 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:18:21,459 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:18:21,459 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-01-21 08:18:21,459 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2018-01-21 08:18:21,459 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 08:18:21,459 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-21 08:18:21,459 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:18:21,460 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:18:21,460 INFO L128 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2018-01-21 08:18:21,460 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:18:21,460 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:18:21,460 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:18:21,751 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:18:21,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:18:21 BoogieIcfgContainer [2018-01-21 08:18:21,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:18:21,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:18:21,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:18:21,755 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:18:21,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:18:21" (1/3) ... [2018-01-21 08:18:21,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa77cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:18:21, skipping insertion in model container [2018-01-21 08:18:21,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:18:21" (2/3) ... [2018-01-21 08:18:21,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa77cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:18:21, skipping insertion in model container [2018-01-21 08:18:21,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:18:21" (3/3) ... [2018-01-21 08:18:21,760 INFO L105 eAbstractionObserver]: Analyzing ICFG relax_false-valid-deref.i [2018-01-21 08:18:21,769 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:18:21,776 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 08:18:21,816 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:18:21,816 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:18:21,816 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:18:21,817 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:18:21,817 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:18:21,817 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:18:21,817 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:18:21,817 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == is_relaxed_prefixErr0EnsuresViolation======== [2018-01-21 08:18:21,818 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:18:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 08:18:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 08:18:21,843 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:18:21,844 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:18:21,844 INFO L371 AbstractCegarLoop]: === Iteration 1 === [is_relaxed_prefixErr0EnsuresViolation]=== [2018-01-21 08:18:21,848 INFO L82 PathProgramCache]: Analyzing trace with hash 913869197, now seen corresponding path program 1 times [2018-01-21 08:18:21,850 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:18:21,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:21,897 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:18:21,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:21,897 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:18:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:18:21,960 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:18:22,011 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 08:18:22,014 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:18:22,014 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 08:18:22,014 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:18:22,017 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:18:22,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:18:22,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:18:22,034 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 2 states. [2018-01-21 08:18:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:18:22,127 INFO L93 Difference]: Finished difference Result 117 states and 157 transitions. [2018-01-21 08:18:22,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:18:22,129 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-21 08:18:22,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:18:22,134 INFO L225 Difference]: With dead ends: 117 [2018-01-21 08:18:22,135 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:18:22,139 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 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 08:18:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:18:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:18:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:18:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:18:22,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-21 08:18:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:18:22,159 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:18:22,159 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:18:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:18:22,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:18:22,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 08:18:22,189 INFO L404 ceAbstractionStarter]: At program point L567'''(lines 567 576) the Hoare annotation is: true [2018-01-21 08:18:22,189 INFO L401 ceAbstractionStarter]: For program point L564(lines 564 565) no Hoare annotation was computed. [2018-01-21 08:18:22,189 INFO L401 ceAbstractionStarter]: For program point is_relaxed_prefixFINAL(lines 560 581) no Hoare annotation was computed. [2018-01-21 08:18:22,190 INFO L401 ceAbstractionStarter]: For program point is_relaxed_prefixErr0EnsuresViolation(lines 560 581) no Hoare annotation was computed. [2018-01-21 08:18:22,190 INFO L401 ceAbstractionStarter]: For program point L567(lines 567 576) no Hoare annotation was computed. [2018-01-21 08:18:22,190 INFO L401 ceAbstractionStarter]: For program point L569(line 569) no Hoare annotation was computed. [2018-01-21 08:18:22,190 INFO L404 ceAbstractionStarter]: At program point is_relaxed_prefixENTRY(lines 560 581) the Hoare annotation is: true [2018-01-21 08:18:22,190 INFO L401 ceAbstractionStarter]: For program point L571(lines 571 574) no Hoare annotation was computed. [2018-01-21 08:18:22,190 INFO L401 ceAbstractionStarter]: For program point is_relaxed_prefixEXIT(lines 560 581) no Hoare annotation was computed. [2018-01-21 08:18:22,190 INFO L401 ceAbstractionStarter]: For program point L567''''(lines 567 576) no Hoare annotation was computed. [2018-01-21 08:18:22,190 INFO L401 ceAbstractionStarter]: For program point L569''(line 569) no Hoare annotation was computed. [2018-01-21 08:18:22,191 INFO L401 ceAbstractionStarter]: For program point L569'(line 569) no Hoare annotation was computed. [2018-01-21 08:18:22,191 INFO L401 ceAbstractionStarter]: For program point L567''(lines 567 576) no Hoare annotation was computed. [2018-01-21 08:18:22,191 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 618) no Hoare annotation was computed. [2018-01-21 08:18:22,191 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 618) no Hoare annotation was computed. [2018-01-21 08:18:22,191 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 618) the Hoare annotation is: true [2018-01-21 08:18:22,191 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 618) no Hoare annotation was computed. [2018-01-21 08:18:22,192 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 618) the Hoare annotation is: true [2018-01-21 08:18:22,192 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 618) no Hoare annotation was computed. [2018-01-21 08:18:22,192 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 618) the Hoare annotation is: true [2018-01-21 08:18:22,192 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 618) no Hoare annotation was computed. [2018-01-21 08:18:22,192 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 618) no Hoare annotation was computed. [2018-01-21 08:18:22,192 INFO L401 ceAbstractionStarter]: For program point L586(line 586) no Hoare annotation was computed. [2018-01-21 08:18:22,192 INFO L401 ceAbstractionStarter]: For program point L585(line 585) no Hoare annotation was computed. [2018-01-21 08:18:22,192 INFO L401 ceAbstractionStarter]: For program point L585'(line 585) no Hoare annotation was computed. [2018-01-21 08:18:22,193 INFO L404 ceAbstractionStarter]: At program point L589(line 589) the Hoare annotation is: true [2018-01-21 08:18:22,193 INFO L404 ceAbstractionStarter]: At program point L587(line 587) the Hoare annotation is: true [2018-01-21 08:18:22,193 INFO L401 ceAbstractionStarter]: For program point L603'(lines 603 614) no Hoare annotation was computed. [2018-01-21 08:18:22,193 INFO L401 ceAbstractionStarter]: For program point L596''(line 596) no Hoare annotation was computed. [2018-01-21 08:18:22,193 INFO L404 ceAbstractionStarter]: At program point L611'(lines 611 612) the Hoare annotation is: true [2018-01-21 08:18:22,193 INFO L401 ceAbstractionStarter]: For program point L598'(line 598) no Hoare annotation was computed. [2018-01-21 08:18:22,193 INFO L401 ceAbstractionStarter]: For program point L598''(line 598) no Hoare annotation was computed. [2018-01-21 08:18:22,194 INFO L401 ceAbstractionStarter]: For program point L586'(line 586) no Hoare annotation was computed. [2018-01-21 08:18:22,194 INFO L401 ceAbstractionStarter]: For program point L600'''(line 600) no Hoare annotation was computed. [2018-01-21 08:18:22,194 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 582 618) no Hoare annotation was computed. [2018-01-21 08:18:22,194 INFO L401 ceAbstractionStarter]: For program point L616(line 616) no Hoare annotation was computed. [2018-01-21 08:18:22,194 INFO L401 ceAbstractionStarter]: For program point L615(line 615) no Hoare annotation was computed. [2018-01-21 08:18:22,194 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 582 618) no Hoare annotation was computed. [2018-01-21 08:18:22,194 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 582 618) the Hoare annotation is: true [2018-01-21 08:18:22,195 INFO L401 ceAbstractionStarter]: For program point L600'(line 600) no Hoare annotation was computed. [2018-01-21 08:18:22,195 INFO L401 ceAbstractionStarter]: For program point L587'(line 587) no Hoare annotation was computed. [2018-01-21 08:18:22,195 INFO L401 ceAbstractionStarter]: For program point L608'(line 608) no Hoare annotation was computed. [2018-01-21 08:18:22,195 INFO L401 ceAbstractionStarter]: For program point L600(line 600) no Hoare annotation was computed. [2018-01-21 08:18:22,195 INFO L401 ceAbstractionStarter]: For program point L603(lines 603 614) no Hoare annotation was computed. [2018-01-21 08:18:22,195 INFO L401 ceAbstractionStarter]: For program point L608(line 608) no Hoare annotation was computed. [2018-01-21 08:18:22,195 INFO L401 ceAbstractionStarter]: For program point L606(lines 606 610) no Hoare annotation was computed. [2018-01-21 08:18:22,196 INFO L401 ceAbstractionStarter]: For program point L591''(lines 591 592) no Hoare annotation was computed. [2018-01-21 08:18:22,196 INFO L404 ceAbstractionStarter]: At program point L593''(lines 593 601) the Hoare annotation is: true [2018-01-21 08:18:22,196 INFO L401 ceAbstractionStarter]: For program point L599''(lines 599 600) no Hoare annotation was computed. [2018-01-21 08:18:22,196 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 582 618) no Hoare annotation was computed. [2018-01-21 08:18:22,196 INFO L401 ceAbstractionStarter]: For program point L593(lines 593 601) no Hoare annotation was computed. [2018-01-21 08:18:22,196 INFO L401 ceAbstractionStarter]: For program point L591(lines 591 592) no Hoare annotation was computed. [2018-01-21 08:18:22,196 INFO L401 ceAbstractionStarter]: For program point L597(lines 597 600) no Hoare annotation was computed. [2018-01-21 08:18:22,197 INFO L401 ceAbstractionStarter]: For program point L596(line 596) no Hoare annotation was computed. [2018-01-21 08:18:22,197 INFO L401 ceAbstractionStarter]: For program point L595(lines 595 600) no Hoare annotation was computed. [2018-01-21 08:18:22,197 INFO L401 ceAbstractionStarter]: For program point L596'(line 596) no Hoare annotation was computed. [2018-01-21 08:18:22,197 INFO L401 ceAbstractionStarter]: For program point L599(lines 599 600) no Hoare annotation was computed. [2018-01-21 08:18:22,197 INFO L401 ceAbstractionStarter]: For program point L598(line 598) no Hoare annotation was computed. [2018-01-21 08:18:22,197 INFO L404 ceAbstractionStarter]: At program point L606'''(lines 606 610) the Hoare annotation is: true [2018-01-21 08:18:22,197 INFO L401 ceAbstractionStarter]: For program point L608''(line 608) no Hoare annotation was computed. [2018-01-21 08:18:22,198 INFO L401 ceAbstractionStarter]: For program point L606''''(lines 606 610) no Hoare annotation was computed. [2018-01-21 08:18:22,198 INFO L401 ceAbstractionStarter]: For program point L606''(lines 606 610) no Hoare annotation was computed. [2018-01-21 08:18:22,198 INFO L404 ceAbstractionStarter]: At program point L600''(line 600) the Hoare annotation is: true [2018-01-21 08:18:22,198 INFO L401 ceAbstractionStarter]: For program point L589'(line 589) no Hoare annotation was computed. [2018-01-21 08:18:22,198 INFO L401 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-01-21 08:18:22,198 INFO L401 ceAbstractionStarter]: For program point __VERIFIER_assertErr0EnsuresViolation(lines 4 9) no Hoare annotation was computed. [2018-01-21 08:18:22,198 INFO L404 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-01-21 08:18:22,199 INFO L401 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-01-21 08:18:22,199 INFO L401 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-01-21 08:18:22,199 INFO L401 ceAbstractionStarter]: For program point L5''(lines 5 7) no Hoare annotation was computed. [2018-01-21 08:18:22,203 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:18:22,203 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:18:22,203 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:18:22,203 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:18:22,203 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:18:22,203 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:18:22,204 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:18:22,204 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:18:22,204 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:18:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 08:18:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:18:22,206 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:18:22,207 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:18:22,207 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:18:22,207 INFO L82 PathProgramCache]: Analyzing trace with hash 188834, now seen corresponding path program 1 times [2018-01-21 08:18:22,207 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:18:22,208 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:22,208 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:18:22,208 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:22,209 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:18:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:18:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:18:22,233 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:18:22,236 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:18:22,239 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:18:22,239 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:18:22,239 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:18:22,240 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:18:22,240 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:18:22,240 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:18:22,240 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:18:22,240 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:18:22,240 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:18:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 08:18:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 08:18:22,242 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:18:22,242 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] [2018-01-21 08:18:22,242 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:18:22,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1940024774, now seen corresponding path program 1 times [2018-01-21 08:18:22,243 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:18:22,243 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:22,244 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:18:22,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:22,244 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:18:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:18:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:18:22,309 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:18:22,313 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:18:22,316 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:18:22,318 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:18:22,319 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:18:22,331 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:18:22,332 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:18:22,332 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:18:22,332 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:18:22,332 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:18:22,332 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:18:22,332 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:18:22,332 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:18:22,332 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:18:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 08:18:22,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 08:18:22,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:18:22,335 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:18:22,335 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:18:22,335 INFO L82 PathProgramCache]: Analyzing trace with hash -560677358, now seen corresponding path program 1 times [2018-01-21 08:18:22,335 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:18:22,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:22,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:18:22,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:22,336 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:18:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:18:22,360 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:18:22,706 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 08:18:22,706 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:18:22,706 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 08:18:22,707 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:18:22,707 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 08:18:22,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 08:18:22,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-21 08:18:22,708 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 8 states. [2018-01-21 08:18:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:18:23,252 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2018-01-21 08:18:23,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 08:18:23,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-01-21 08:18:23,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:18:23,253 INFO L225 Difference]: With dead ends: 116 [2018-01-21 08:18:23,253 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:18:23,254 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-01-21 08:18:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:18:23,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:18:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:18:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:18:23,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-01-21 08:18:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:18:23,255 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:18:23,255 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 08:18:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:18:23,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:18:23,256 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:18:23,257 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:18:23,257 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:18:23,257 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:18:23,257 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:18:23,257 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:18:23,257 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:18:23,257 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == __VERIFIER_assertErr0EnsuresViolation======== [2018-01-21 08:18:23,257 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:18:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 08:18:23,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 08:18:23,259 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:18:23,259 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 08:18:23,259 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0EnsuresViolation]=== [2018-01-21 08:18:23,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1448919275, now seen corresponding path program 1 times [2018-01-21 08:18:23,259 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:18:23,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:23,261 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:18:23,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:18:23,261 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:18:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:18:23,276 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:18:23,294 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 08:18:23,294 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:18:23,294 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 08:18:23,295 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:18:23,295 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:18:23,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:18:23,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:18:23,296 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 2 states. [2018-01-21 08:18:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:18:23,303 INFO L93 Difference]: Finished difference Result 117 states and 157 transitions. [2018-01-21 08:18:23,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:18:23,303 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 08:18:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:18:23,304 INFO L225 Difference]: With dead ends: 117 [2018-01-21 08:18:23,304 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:18:23,305 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 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 08:18:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:18:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:18:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:18:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:18:23,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 08:18:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:18:23,306 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:18:23,306 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:18:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:18:23,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:18:23,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:18:23 BoogieIcfgContainer [2018-01-21 08:18:23,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:18:23,311 INFO L168 Benchmark]: Toolchain (without parser) took 2166.76 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 261.8 MB in the beginning and 330.1 MB in the end (delta: -68.3 MB). Peak memory consumption was 91.6 MB. Max. memory is 5.3 GB. [2018-01-21 08:18:23,312 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 305.7 MB. Free memory is still 267.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:18:23,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.83 ms. Allocated memory is still 305.7 MB. Free memory was 260.8 MB in the beginning and 249.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 5.3 GB. [2018-01-21 08:18:23,313 INFO L168 Benchmark]: Boogie Preprocessor took 35.61 ms. Allocated memory is still 305.7 MB. Free memory was 249.8 MB in the beginning and 247.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:18:23,313 INFO L168 Benchmark]: RCFGBuilder took 344.82 ms. Allocated memory is still 305.7 MB. Free memory was 247.8 MB in the beginning and 224.8 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:18:23,314 INFO L168 Benchmark]: TraceAbstraction took 1557.28 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 223.8 MB in the beginning and 330.1 MB in the end (delta: -106.3 MB). Peak memory consumption was 53.6 MB. Max. memory is 5.3 GB. [2018-01-21 08:18:23,315 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 305.7 MB. Free memory is still 267.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 222.83 ms. Allocated memory is still 305.7 MB. Free memory was 260.8 MB in the beginning and 249.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.61 ms. Allocated memory is still 305.7 MB. Free memory was 249.8 MB in the beginning and 247.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 344.82 ms. Allocated memory is still 305.7 MB. Free memory was 247.8 MB in the beginning and 224.8 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1557.28 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 223.8 MB in the beginning and 330.1 MB in the end (delta: -106.3 MB). Peak memory consumption was 53.6 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) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 560]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: is_relaxed_prefixErr0EnsuresViolation CFG has 5 procedures, 70 locations, 5 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 18 PreInvPairs, 23 NumberOfFragments, 13 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - 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 5 procedures, 70 locations, 5 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L584] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L584] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L585] EXPR, FCALL malloc(sizeof(int)*pat_len) VAL [a_len=4831838208, malloc(sizeof(int)*pat_len)={4831838210:0}, pat_len=2147483647] [L585] int *pat=malloc(sizeof(int)*pat_len); VAL [a_len=4831838208, malloc(sizeof(int)*pat_len)={4831838210:0}, pat={4831838210:0}, pat_len=2147483647] [L586] EXPR, FCALL malloc(sizeof(int)*a_len) VAL [a_len=4831838208, malloc(sizeof(int)*a_len)={4831838212:0}, malloc(sizeof(int)*pat_len)={4831838210:0}, pat={4831838210:0}, pat_len=2147483647] [L586] int *a=malloc(sizeof(int)*a_len); VAL [a={4831838212:0}, a_len=4831838208, malloc(sizeof(int)*a_len)={4831838212:0}, malloc(sizeof(int)*pat_len)={4831838210:0}, pat={4831838210:0}, pat_len=2147483647] [L587] CALL is_relaxed_prefix(pat, pat_len, a, a_len) VAL [\old(a_length)=536870912, \old(pat_length)=2147483647, a={4831838212:0}, pat={4831838210:0}] [L564] COND TRUE pat_length>a_length+1 [L565] RET return 0; VAL [\old(a_length)=536870912, \old(pat_length)=2147483647, \result=0, a={4831838212:0}, a={4831838212:0}, a_length=536870912, pat={4831838210:0}, pat={4831838210:0}, pat_length=2147483647] [L587] is_relaxed_prefix(pat, pat_len, a, a_len) VAL [a={4831838212:0}, a_len=4831838208, is_relaxed_prefix(pat, pat_len, a, a_len)=0, malloc(sizeof(int)*a_len)={4831838212:0}, malloc(sizeof(int)*pat_len)={4831838210:0}, pat={4831838210:0}, pat_len=2147483647] [L587] COND FALSE !(is_relaxed_prefix(pat, pat_len, a, a_len)) [L603] COND FALSE !(pat_len<=a_len+1) VAL [a={4831838212:0}, a_len=4831838208, malloc(sizeof(int)*a_len)={4831838212:0}, malloc(sizeof(int)*pat_len)={4831838210:0}, pat={4831838210:0}, pat_len=2147483647] [L615] FCALL free(pat) VAL [a={4831838212:0}, a_len=4831838208, malloc(sizeof(int)*a_len)={4831838212:0}, malloc(sizeof(int)*pat_len)={4831838210:0}, pat={4831838210:0}, pat_len=2147483647] [L616] FCALL free(a) VAL [a={4831838212:0}, a_len=4831838208, malloc(sizeof(int)*a_len)={4831838212:0}, malloc(sizeof(int)*pat_len)={4831838210:0}, pat={4831838210:0}, pat_len=2147483647] [L617] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 5 procedures, 70 locations, 5 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred 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, 23 NumberOfCodeBlocks, 23 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 - PositiveResult [Line: 582]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 5 procedures, 70 locations, 5 error locations. SAFE Result, 0.9s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 103 SDslu, 122 SDs, 0 SdLazy, 261 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 3920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 4]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: __VERIFIER_assertErr0EnsuresViolation CFG has 5 procedures, 70 locations, 5 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 606]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 567]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/relax_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-18-23-324.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/relax_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-18-23-324.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/relax_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-18-23-324.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/relax_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-18-23-324.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/relax_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-18-23-324.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/relax_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_08-18-23-324.csv Received shutdown request...