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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 21:56:14,134 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 21:56:14,136 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 21:56:14,149 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 21:56:14,149 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 21:56:14,150 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 21:56:14,151 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 21:56:14,153 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 21:56:14,155 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 21:56:14,156 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 21:56:14,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 21:56:14,157 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 21:56:14,158 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 21:56:14,159 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 21:56:14,160 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 21:56:14,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 21:56:14,164 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 21:56:14,166 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 21:56:14,167 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 21:56:14,168 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 21:56:14,170 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 21:56:14,171 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 21:56:14,171 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 21:56:14,172 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 21:56:14,172 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 21:56:14,174 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 21:56:14,174 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 21:56:14,174 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 21:56:14,175 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 21:56:14,175 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 21:56:14,175 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 21:56:14,176 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-20 21:56:14,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 21:56:14,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 21:56:14,186 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 21:56:14,186 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 21:56:14,186 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 21:56:14,186 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 21:56:14,186 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 21:56:14,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 21:56:14,187 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 21:56:14,187 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 21:56:14,188 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 21:56:14,188 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 21:56:14,188 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 21:56:14,188 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 21:56:14,188 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 21:56:14,189 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 21:56:14,189 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 21:56:14,189 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 21:56:14,189 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 21:56:14,189 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 21:56:14,190 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 21:56:14,190 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 21:56:14,190 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 21:56:14,190 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 21:56:14,190 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 21:56:14,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 21:56:14,191 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 21:56:14,191 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 21:56:14,191 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 21:56:14,192 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 21:56:14,192 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 21:56:14,192 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 21:56:14,192 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 21:56:14,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 21:56:14,193 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 21:56:14,193 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 21:56:14,194 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 21:56:14,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 21:56:14,242 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 21:56:14,246 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 21:56:14,247 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 21:56:14,248 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 21:56:14,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i [2018-01-20 21:56:14,410 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 21:56:14,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 21:56:14,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 21:56:14,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 21:56:14,419 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 21:56:14,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fa6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14, skipping insertion in model container [2018-01-20 21:56:14,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,435 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:56:14,475 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:56:14,590 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:56:14,605 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:56:14,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14 WrapperNode [2018-01-20 21:56:14,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 21:56:14,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 21:56:14,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 21:56:14,611 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 21:56:14,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (1/1) ... [2018-01-20 21:56:14,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 21:56:14,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 21:56:14,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 21:56:14,653 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 21:56:14,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (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 [2018-01-20 21:56:14,711 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 21:56:14,711 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 21:56:14,711 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2018-01-20 21:56:14,712 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 21:56:14,712 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 21:56:14,712 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 21:56:14,712 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 21:56:14,712 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 21:56:14,712 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 21:56:14,713 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 21:56:14,713 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk [2018-01-20 21:56:14,713 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 21:56:14,713 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 21:56:14,713 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 21:56:14,926 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 21:56:14,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:56:14 BoogieIcfgContainer [2018-01-20 21:56:14,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 21:56:14,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 21:56:14,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 21:56:14,929 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 21:56:14,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:56:14" (1/3) ... [2018-01-20 21:56:14,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d867523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:56:14, skipping insertion in model container [2018-01-20 21:56:14,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:56:14" (2/3) ... [2018-01-20 21:56:14,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d867523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:56:14, skipping insertion in model container [2018-01-20 21:56:14,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:56:14" (3/3) ... [2018-01-20 21:56:14,932 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i [2018-01-20 21:56:14,939 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 21:56:14,945 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 21:56:14,981 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:56:14,982 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:56:14,982 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:56:14,982 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:56:14,982 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:56:14,982 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:56:14,982 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:56:14,982 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 21:56:14,983 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:56:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:56:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 21:56:15,008 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:56:15,009 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 21:56:15,009 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 21:56:15,015 INFO L82 PathProgramCache]: Analyzing trace with hash 99946, now seen corresponding path program 1 times [2018-01-20 21:56:15,017 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:56:15,018 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:56:15,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,065 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:56:15,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:56:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:56:15,118 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:56:15,125 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:56:15,131 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:56:15,131 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:56:15,131 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:56:15,131 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:56:15,131 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:56:15,131 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:56:15,131 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:56:15,131 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrpbrkErr0EnsuresViolation======== [2018-01-20 21:56:15,132 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:56:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:56:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 21:56:15,134 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:56:15,134 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:56:15,134 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrpbrkErr0EnsuresViolation]=== [2018-01-20 21:56:15,134 INFO L82 PathProgramCache]: Analyzing trace with hash -833774844, now seen corresponding path program 1 times [2018-01-20 21:56:15,134 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:56:15,135 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:56:15,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,136 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:56:15,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:56:15,170 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:56:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:56:15,211 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:56:15,212 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:56:15,213 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:56:15,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:56:15,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:56:15,227 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-20 21:56:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:56:15,330 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-20 21:56:15,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:56:15,331 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-20 21:56:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:56:15,340 INFO L225 Difference]: With dead ends: 66 [2018-01-20 21:56:15,340 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:56:15,343 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 [2018-01-20 21:56:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:56:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:56:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:56:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:56:15,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-01-20 21:56:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:56:15,370 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:56:15,370 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:56:15,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:56:15,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:56:15,373 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:56:15,373 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:56:15,373 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:56:15,373 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:56:15,373 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:56:15,373 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:56:15,373 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:56:15,373 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 21:56:15,373 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:56:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:56:15,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-20 21:56:15,376 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:56:15,376 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] [2018-01-20 21:56:15,376 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:56:15,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1848851441, now seen corresponding path program 1 times [2018-01-20 21:56:15,376 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:56:15,376 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:56:15,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,377 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:56:15,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:56:15,397 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:56:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:56:15,422 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:56:15,422 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:56:15,423 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:56:15,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:56:15,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:56:15,423 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-20 21:56:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:56:15,429 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-20 21:56:15,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:56:15,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-01-20 21:56:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:56:15,434 INFO L225 Difference]: With dead ends: 66 [2018-01-20 21:56:15,434 INFO L226 Difference]: Without dead ends: 38 [2018-01-20 21:56:15,435 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 [2018-01-20 21:56:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-20 21:56:15,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-20 21:56:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-20 21:56:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-01-20 21:56:15,445 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 28 [2018-01-20 21:56:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:56:15,446 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-01-20 21:56:15,446 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:56:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-01-20 21:56:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:56:15,447 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:56:15,447 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] [2018-01-20 21:56:15,447 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:56:15,447 INFO L82 PathProgramCache]: Analyzing trace with hash -511937495, now seen corresponding path program 1 times [2018-01-20 21:56:15,447 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:56:15,447 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:56:15,448 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,448 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:56:15,449 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:56:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:56:15,516 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:56:15,525 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:56:15,528 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:56:15,529 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:56:15,530 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:56:15,541 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:56:15,541 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:56:15,541 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:56:15,541 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:56:15,541 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:56:15,541 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:56:15,541 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:56:15,541 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 21:56:15,542 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:56:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:56:15,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-20 21:56:15,544 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:56:15,544 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] [2018-01-20 21:56:15,544 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 21:56:15,574 INFO L82 PathProgramCache]: Analyzing trace with hash 293047855, now seen corresponding path program 1 times [2018-01-20 21:56:15,575 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:56:15,575 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:56:15,576 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,576 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:56:15,576 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:56:15,587 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:56:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:56:15,604 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:56:15,604 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:56:15,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:56:15,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:56:15,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:56:15,605 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-20 21:56:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:56:15,610 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-20 21:56:15,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:56:15,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-20 21:56:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:56:15,612 INFO L225 Difference]: With dead ends: 66 [2018-01-20 21:56:15,612 INFO L226 Difference]: Without dead ends: 36 [2018-01-20 21:56:15,612 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 [2018-01-20 21:56:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-20 21:56:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-20 21:56:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-20 21:56:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-01-20 21:56:15,617 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 26 [2018-01-20 21:56:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:56:15,618 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-01-20 21:56:15,618 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:56:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-01-20 21:56:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:56:15,619 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:56:15,619 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] [2018-01-20 21:56:15,619 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 21:56:15,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1448575799, now seen corresponding path program 1 times [2018-01-20 21:56:15,620 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:56:15,620 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:56:15,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,621 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:56:15,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:56:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:56:15,638 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:56:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:56:16,011 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:56:16,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-20 21:56:16,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-20 21:56:16,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-20 21:56:16,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-20 21:56:16,012 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2018-01-20 21:56:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:56:16,244 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-01-20 21:56:16,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-20 21:56:16,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-01-20 21:56:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:56:16,245 INFO L225 Difference]: With dead ends: 36 [2018-01-20 21:56:16,245 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:56:16,246 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-20 21:56:16,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:56:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:56:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:56:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:56:16,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-20 21:56:16,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:56:16,247 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:56:16,247 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-20 21:56:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:56:16,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:56:16,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:56:16 BoogieIcfgContainer [2018-01-20 21:56:16,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 21:56:16,250 INFO L168 Benchmark]: Toolchain (without parser) took 1839.56 ms. Allocated memory was 302.0 MB in the beginning and 458.8 MB in the end (delta: 156.8 MB). Free memory was 260.3 MB in the beginning and 350.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 66.2 MB. Max. memory is 5.3 GB. [2018-01-20 21:56:16,251 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 266.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 21:56:16,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.06 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 249.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:56:16,251 INFO L168 Benchmark]: Boogie Preprocessor took 41.72 ms. Allocated memory is still 302.0 MB. Free memory was 249.3 MB in the beginning and 247.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:56:16,251 INFO L168 Benchmark]: RCFGBuilder took 273.46 ms. Allocated memory is still 302.0 MB. Free memory was 247.3 MB in the beginning and 231.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. [2018-01-20 21:56:16,252 INFO L168 Benchmark]: TraceAbstraction took 1321.98 ms. Allocated memory was 302.0 MB in the beginning and 458.8 MB in the end (delta: 156.8 MB). Free memory was 230.7 MB in the beginning and 350.9 MB in the end (delta: -120.1 MB). Peak memory consumption was 36.6 MB. Max. memory is 5.3 GB. [2018-01-20 21:56:16,253 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 266.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 197.06 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 249.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 41.72 ms. Allocated memory is still 302.0 MB. Free memory was 249.3 MB in the beginning and 247.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 273.46 ms. Allocated memory is still 302.0 MB. Free memory was 247.3 MB in the beginning and 231.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1321.98 ms. Allocated memory was 302.0 MB in the beginning and 458.8 MB in the end (delta: 156.8 MB). Free memory was 230.7 MB in the beginning and 350.9 MB in the end (delta: -120.1 MB). Peak memory consumption was 36.6 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: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 42 locations, 4 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=42occurred 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 - PositiveResult [Line: 540]: 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: cstrpbrkErr0EnsuresViolation CFG has 4 procedures, 42 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 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: [L553] int length1 = __VERIFIER_nondet_int(); [L554] int length2 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 VAL [length1=1, length2=0] [L558] COND TRUE length2 < 1 [L559] length2 = 1 VAL [length1=1, length2=1] [L561] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1] [L561] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={3:0}] [L562] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}] [L562] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L563] FCALL nondetString1[length1-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L564] FCALL nondetString2[length2-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L565] CALL cstrpbrk(nondetString1,nondetString2) VAL [s1={3:0}, s2={5:0}] [L543] const char *scanp; [L544] int c, sc; VAL [s1={3:0}, s1={3:0}, s2={5:0}, s2={5:0}] [L545] EXPR s1++ VAL [s1={3:0}, s1={3:1}, s1++=0, s1++={3:0}, s2={5:0}, s2={5:0}] [L545] EXPR c = *s1++ VAL [c=0, s1={3:1}, s1={3:0}, s1++={3:0}, s1++=0, s2={5:0}, s2={5:0}] [L545] COND FALSE !((c = *s1++) != 0) [L550] RET return (((void *)0)); VAL [\result={0:0}, c=0, s1={3:0}, s1={3:1}, s2={5:0}, s2={5:0}] [L565] cstrpbrk(nondetString1,nondetString2) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, cstrpbrk(nondetString1,nondetString2)={0:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L566] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 42 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 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: 552]: 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 4 procedures, 42 locations, 4 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 27 SDslu, 20 SDs, 0 SdLazy, 109 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 6773 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_21-56-16-261.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_21-56-16-261.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_21-56-16-261.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_21-56-16-261.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_21-56-16-261.csv Received shutdown request...