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/cstrspn-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 21:55:28,285 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 21:55:28,286 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 21:55:28,302 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 21:55:28,302 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 21:55:28,303 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 21:55:28,304 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 21:55:28,306 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 21:55:28,308 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 21:55:28,309 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 21:55:28,310 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 21:55:28,310 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 21:55:28,311 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 21:55:28,312 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 21:55:28,313 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 21:55:28,316 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 21:55:28,318 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 21:55:28,320 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 21:55:28,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 21:55:28,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 21:55:28,325 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 21:55:28,326 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 21:55:28,326 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 21:55:28,327 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 21:55:28,328 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 21:55:28,329 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 21:55:28,329 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 21:55:28,330 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 21:55:28,330 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 21:55:28,330 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 21:55:28,331 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 21:55:28,332 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 21:55:28,340 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 21:55:28,341 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 21:55:28,342 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 21:55:28,342 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 21:55:28,342 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 21:55:28,342 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 21:55:28,342 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 21:55:28,343 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 21:55:28,343 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 21:55:28,343 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 21:55:28,343 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 21:55:28,344 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 21:55:28,344 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 21:55:28,344 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 21:55:28,344 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 21:55:28,344 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 21:55:28,344 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 21:55:28,344 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 21:55:28,345 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 21:55:28,345 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 21:55:28,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 21:55:28,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 21:55:28,345 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 21:55:28,345 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 21:55:28,346 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 21:55:28,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 21:55:28,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 21:55:28,346 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 21:55:28,346 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 21:55:28,346 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 21:55:28,347 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 21:55:28,347 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 21:55:28,347 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 21:55:28,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 21:55:28,347 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 21:55:28,348 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 21:55:28,348 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 21:55:28,382 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 21:55:28,392 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 21:55:28,396 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 21:55:28,397 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 21:55:28,397 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 21:55:28,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrspn-alloca_true-valid-memsafety_true-termination.i [2018-01-20 21:55:28,552 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 21:55:28,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 21:55:28,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 21:55:28,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 21:55:28,562 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 21:55:28,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4946e077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28, skipping insertion in model container [2018-01-20 21:55:28,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,579 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:55:28,619 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:55:28,737 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:55:28,757 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:55:28,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28 WrapperNode [2018-01-20 21:55:28,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 21:55:28,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 21:55:28,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 21:55:28,764 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 21:55:28,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (1/1) ... [2018-01-20 21:55:28,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 21:55:28,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 21:55:28,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 21:55:28,808 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 21:55:28,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (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 21:55:28,868 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 21:55:28,868 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 21:55:28,868 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrspn [2018-01-20 21:55:28,868 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 21:55:28,869 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 21:55:28,869 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 21:55:28,869 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 21:55:28,869 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 21:55:28,869 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 21:55:28,869 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 21:55:28,869 INFO L128 BoogieDeclarations]: Found specification of procedure cstrspn [2018-01-20 21:55:28,870 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 21:55:28,870 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 21:55:28,870 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 21:55:29,098 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 21:55:29,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:55:29 BoogieIcfgContainer [2018-01-20 21:55:29,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 21:55:29,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 21:55:29,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 21:55:29,101 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 21:55:29,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:55:28" (1/3) ... [2018-01-20 21:55:29,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d30f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:55:29, skipping insertion in model container [2018-01-20 21:55:29,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:28" (2/3) ... [2018-01-20 21:55:29,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d30f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:55:29, skipping insertion in model container [2018-01-20 21:55:29,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:55:29" (3/3) ... [2018-01-20 21:55:29,104 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrspn-alloca_true-valid-memsafety_true-termination.i [2018-01-20 21:55:29,112 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 21:55:29,117 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 21:55:29,160 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:29,160 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:29,160 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:29,160 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:29,160 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:29,160 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:29,160 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:29,160 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 21:55:29,161 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-20 21:55:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 21:55:29,188 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:29,189 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 21:55:29,189 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 21:55:29,193 INFO L82 PathProgramCache]: Analyzing trace with hash 109556, now seen corresponding path program 1 times [2018-01-20 21:55:29,194 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:29,195 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:29,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,237 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:29,237 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:29,291 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:55:29,297 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:29,303 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:29,303 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:29,303 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:29,303 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:29,303 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:29,303 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:29,303 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:29,304 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 21:55:29,304 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-20 21:55:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-20 21:55:29,306 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:29,307 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 21:55:29,307 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash -399039101, now seen corresponding path program 1 times [2018-01-20 21:55:29,307 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:29,307 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:29,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,308 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:29,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:29,342 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:29,393 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 21:55:29,396 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:29,397 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:55:29,398 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:55:29,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:55:29,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:55:29,492 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-01-20 21:55:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:29,512 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2018-01-20 21:55:29,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:55:29,513 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-01-20 21:55:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:29,521 INFO L225 Difference]: With dead ends: 76 [2018-01-20 21:55:29,522 INFO L226 Difference]: Without dead ends: 43 [2018-01-20 21:55:29,524 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 21:55:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-20 21:55:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-01-20 21:55:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-20 21:55:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-01-20 21:55:29,563 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2018-01-20 21:55:29,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:29,563 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-01-20 21:55:29,563 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:55:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-01-20 21:55:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:55:29,564 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:29,565 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 21:55:29,565 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1887771048, now seen corresponding path program 1 times [2018-01-20 21:55:29,565 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:29,565 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:29,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,566 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:29,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:29,625 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:55:29,633 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:29,635 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:29,636 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:29,636 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:29,647 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:29,647 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:29,647 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:29,647 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:29,647 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:29,647 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:29,647 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:29,648 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 21:55:29,648 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-20 21:55:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-20 21:55:29,650 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:29,650 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 21:55:29,650 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:29,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1532543956, now seen corresponding path program 1 times [2018-01-20 21:55:29,650 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:29,650 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:29,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,651 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:29,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:29,667 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:29,690 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 21:55:29,690 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:29,690 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:55:29,691 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:55:29,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:55:29,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:55:29,691 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-01-20 21:55:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:29,697 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2018-01-20 21:55:29,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:55:29,697 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-20 21:55:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:29,698 INFO L225 Difference]: With dead ends: 76 [2018-01-20 21:55:29,698 INFO L226 Difference]: Without dead ends: 41 [2018-01-20 21:55:29,699 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 21:55:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-20 21:55:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-01-20 21:55:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-20 21:55:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-01-20 21:55:29,705 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 26 [2018-01-20 21:55:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:29,706 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-01-20 21:55:29,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:55:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-01-20 21:55:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-20 21:55:29,707 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:29,707 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 21:55:29,707 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:29,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1315929401, now seen corresponding path program 1 times [2018-01-20 21:55:29,708 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:29,708 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:29,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,709 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:29,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:29,730 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:30,113 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 21:55:30,113 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:30,113 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-20 21:55:30,114 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-20 21:55:30,114 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-20 21:55:30,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-20 21:55:30,115 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 9 states. [2018-01-20 21:55:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:30,461 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2018-01-20 21:55:30,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-20 21:55:30,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-20 21:55:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:30,463 INFO L225 Difference]: With dead ends: 41 [2018-01-20 21:55:30,463 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:55:30,464 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 21:55:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:55:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:55:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:55:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:55:30,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-01-20 21:55:30,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:30,465 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:55:30,466 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-20 21:55:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:55:30,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:55:30,469 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:30,469 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:30,469 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:30,470 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:30,470 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:30,470 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:30,470 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:30,470 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrspnErr0EnsuresViolation======== [2018-01-20 21:55:30,470 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-20 21:55:30,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 21:55:30,473 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:30,473 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 21:55:30,473 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrspnErr0EnsuresViolation]=== [2018-01-20 21:55:30,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1650213975, now seen corresponding path program 1 times [2018-01-20 21:55:30,474 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:30,474 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:30,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:30,475 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:30,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:30,486 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:30,499 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 21:55:30,500 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:30,500 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:55:30,500 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:55:30,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:55:30,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:55:30,501 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-01-20 21:55:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:30,506 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2018-01-20 21:55:30,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:55:30,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-20 21:55:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:30,507 INFO L225 Difference]: With dead ends: 76 [2018-01-20 21:55:30,507 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:55:30,508 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 21:55:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:55:30,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:55:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:55:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:55:30,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-01-20 21:55:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:30,509 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:55:30,509 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:55:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:55:30,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:55:30,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:55:30 BoogieIcfgContainer [2018-01-20 21:55:30,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 21:55:30,514 INFO L168 Benchmark]: Toolchain (without parser) took 1960.93 ms. Allocated memory was 308.8 MB in the beginning and 475.0 MB in the end (delta: 166.2 MB). Free memory was 267.7 MB in the beginning and 356.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 77.3 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:30,515 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 308.8 MB. Free memory is still 273.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 21:55:30,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.92 ms. Allocated memory is still 308.8 MB. Free memory was 267.7 MB in the beginning and 257.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:30,516 INFO L168 Benchmark]: Boogie Preprocessor took 43.41 ms. Allocated memory is still 308.8 MB. Free memory was 257.8 MB in the beginning and 255.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:30,516 INFO L168 Benchmark]: RCFGBuilder took 291.81 ms. Allocated memory is still 308.8 MB. Free memory was 255.8 MB in the beginning and 236.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:30,517 INFO L168 Benchmark]: TraceAbstraction took 1413.21 ms. Allocated memory was 308.8 MB in the beginning and 475.0 MB in the end (delta: 166.2 MB). Free memory was 236.8 MB in the beginning and 356.6 MB in the end (delta: -119.8 MB). Peak memory consumption was 46.4 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:30,518 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 308.8 MB. Free memory is still 273.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 205.92 ms. Allocated memory is still 308.8 MB. Free memory was 267.7 MB in the beginning and 257.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 43.41 ms. Allocated memory is still 308.8 MB. Free memory was 257.8 MB in the beginning and 255.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 291.81 ms. Allocated memory is still 308.8 MB. Free memory was 255.8 MB in the beginning and 236.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1413.21 ms. Allocated memory was 308.8 MB in the beginning and 475.0 MB in the end (delta: 166.2 MB). Free memory was 236.8 MB in the beginning and 356.6 MB in the end (delta: -119.8 MB). Peak memory consumption was 46.4 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, 47 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=47occurred 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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 VAL [length1=1, length2=0] [L561] COND TRUE length2 < 1 [L562] length2 = 1 VAL [length1=1, length2=1] [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1] [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={3:0}] [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, length1=1, length2=1, nondetString1={3:0}] [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L566] FCALL nondetString1[length1-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L567] FCALL nondetString2[length2-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L568] CALL, EXPR cstrspn(nondetString1,nondetString2) VAL [s1={3:0}, s2={4:0}] [L542] const char *sc1; [L543] const char *s; [L544] int c; [L545] sc1 = s1 VAL [s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L545] EXPR, FCALL \read(*sc1) VAL [\read(*sc1)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L545] COND FALSE !(*sc1 != '\0') [L553] RET return sc1 - s1; VAL [\result=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L568] EXPR cstrspn(nondetString1,nondetString2) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, cstrspn(nondetString1,nondetString2)=0, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L568] return cstrspn(nondetString1,nondetString2); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 47 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 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=47occurred 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, 58 NumberOfCodeBlocks, 58 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: 555]: 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, 47 locations, 4 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 30 SDslu, 37 SDs, 0 SdLazy, 229 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=47occurred 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, 0.4s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 6295 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 - 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: cstrspnErr0EnsuresViolation CFG has 4 procedures, 47 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 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=47occurred 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_21-55-30-530.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_21-55-30-530.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_21-55-30-530.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_21-55-30-530.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_21-55-30-530.csv Received shutdown request...