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/cstrcmp-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 21:55:11,357 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 21:55:11,359 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 21:55:11,376 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 21:55:11,376 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 21:55:11,377 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 21:55:11,378 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 21:55:11,380 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 21:55:11,383 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 21:55:11,383 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 21:55:11,384 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 21:55:11,385 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 21:55:11,386 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 21:55:11,387 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 21:55:11,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 21:55:11,390 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 21:55:11,392 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 21:55:11,394 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 21:55:11,395 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 21:55:11,396 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 21:55:11,399 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 21:55:11,405 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 21:55:11,415 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 21:55:11,416 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 21:55:11,416 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 21:55:11,417 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 21:55:11,417 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 21:55:11,417 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 21:55:11,417 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 21:55:11,418 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 21:55:11,418 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 21:55:11,418 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 21:55:11,419 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 21:55:11,419 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 21:55:11,419 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 21:55:11,419 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 21:55:11,419 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 21:55:11,419 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 21:55:11,420 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 21:55:11,420 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 21:55:11,420 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 21:55:11,420 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 21:55:11,420 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 21:55:11,421 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 21:55:11,421 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 21:55:11,421 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 21:55:11,421 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 21:55:11,421 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 21:55:11,422 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 21:55:11,422 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 21:55:11,422 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 21:55:11,422 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 21:55:11,422 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 21:55:11,423 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 21:55:11,423 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 21:55:11,423 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 21:55:11,423 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 21:55:11,424 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 21:55:11,424 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 21:55:11,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 21:55:11,468 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 21:55:11,472 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 21:55:11,474 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 21:55:11,474 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 21:55:11,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-01-20 21:55:11,730 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 21:55:11,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 21:55:11,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 21:55:11,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 21:55:11,738 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 21:55:11,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7344226a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11, skipping insertion in model container [2018-01-20 21:55:11,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,757 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:55:11,797 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:55:11,905 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:55:11,919 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:55:11,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11 WrapperNode [2018-01-20 21:55:11,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 21:55:11,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 21:55:11,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 21:55:11,926 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 21:55:11,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (1/1) ... [2018-01-20 21:55:11,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 21:55:11,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 21:55:11,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 21:55:11,953 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 21:55:11,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (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 21:55:11,998 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 21:55:11,998 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 21:55:11,998 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcmp [2018-01-20 21:55:11,999 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcmp [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 21:55:11,999 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 21:55:12,000 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 21:55:12,219 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 21:55:12,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:55:12 BoogieIcfgContainer [2018-01-20 21:55:12,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 21:55:12,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 21:55:12,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 21:55:12,224 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 21:55:12,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:55:11" (1/3) ... [2018-01-20 21:55:12,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4fae81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:55:12, skipping insertion in model container [2018-01-20 21:55:12,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:55:11" (2/3) ... [2018-01-20 21:55:12,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4fae81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:55:12, skipping insertion in model container [2018-01-20 21:55:12,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:55:12" (3/3) ... [2018-01-20 21:55:12,228 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-01-20 21:55:12,236 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 21:55:12,242 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 21:55:12,284 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:12,284 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:12,285 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:12,285 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:12,285 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:12,285 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:12,285 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:12,285 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 21:55:12,286 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-20 21:55:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 21:55:12,309 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:12,310 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 21:55:12,311 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 21:55:12,316 INFO L82 PathProgramCache]: Analyzing trace with hash 98985, now seen corresponding path program 1 times [2018-01-20 21:55:12,318 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:12,318 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:12,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:12,359 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:12,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:12,410 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:55:12,416 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:12,422 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:12,422 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:12,422 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:12,422 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:12,422 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:12,422 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:12,422 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:12,422 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrcmpErr0EnsuresViolation======== [2018-01-20 21:55:12,422 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-20 21:55:12,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-20 21:55:12,425 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:12,425 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:12,425 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrcmpErr0EnsuresViolation]=== [2018-01-20 21:55:12,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1621624204, now seen corresponding path program 1 times [2018-01-20 21:55:12,425 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:12,425 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:12,426 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:12,427 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:12,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:12,462 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:12,508 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 21:55:12,510 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:12,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:55:12,512 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:55:12,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:55:12,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:55:12,530 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-01-20 21:55:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:12,621 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-01-20 21:55:12,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:55:12,622 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-01-20 21:55:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:12,628 INFO L225 Difference]: With dead ends: 64 [2018-01-20 21:55:12,628 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:55:12,631 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 21:55:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:55:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:55:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:55:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:55:12,652 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-01-20 21:55:12,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:12,653 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:55:12,653 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:55:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:55:12,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:55:12,656 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:12,656 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:12,656 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:12,656 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:12,656 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:12,656 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:12,656 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:12,657 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 21:55:12,657 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:12,658 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-20 21:55:12,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-20 21:55:12,660 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:12,660 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:12,660 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash 29258502, now seen corresponding path program 1 times [2018-01-20 21:55:12,661 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:12,661 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:12,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:12,662 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:12,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:12,682 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:12,710 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 21:55:12,710 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:12,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:55:12,711 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:55:12,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:55:12,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:55:12,712 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-01-20 21:55:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:12,716 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-01-20 21:55:12,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:55:12,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2018-01-20 21:55:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:12,721 INFO L225 Difference]: With dead ends: 64 [2018-01-20 21:55:12,721 INFO L226 Difference]: Without dead ends: 41 [2018-01-20 21:55:12,721 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 21:55:12,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-20 21:55:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-01-20 21:55:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-20 21:55:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-01-20 21:55:12,731 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 33 [2018-01-20 21:55:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:12,731 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-01-20 21:55:12,732 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:55:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-01-20 21:55:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-20 21:55:12,732 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:12,733 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:12,733 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:12,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1608365208, now seen corresponding path program 1 times [2018-01-20 21:55:12,733 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:12,733 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:12,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:12,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:12,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:12,773 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:13,118 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 21:55:13,118 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:13,119 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-20 21:55:13,120 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-20 21:55:13,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-20 21:55:13,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-20 21:55:13,121 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 10 states. [2018-01-20 21:55:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:13,482 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2018-01-20 21:55:13,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-20 21:55:13,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-01-20 21:55:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:13,487 INFO L225 Difference]: With dead ends: 83 [2018-01-20 21:55:13,487 INFO L226 Difference]: Without dead ends: 74 [2018-01-20 21:55:13,488 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-01-20 21:55:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-20 21:55:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2018-01-20 21:55:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-20 21:55:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2018-01-20 21:55:13,507 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 37 [2018-01-20 21:55:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:13,508 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2018-01-20 21:55:13,508 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-20 21:55:13,508 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2018-01-20 21:55:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-20 21:55:13,511 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:13,512 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:13,512 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:55:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1866530646, now seen corresponding path program 1 times [2018-01-20 21:55:13,512 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:13,513 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:13,513 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:13,514 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:13,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:55:13,578 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:55:13,588 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:13,593 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:13,596 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:13,596 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:55:13,612 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:55:13,613 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:55:13,613 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:55:13,613 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:55:13,613 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:55:13,613 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:55:13,613 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:55:13,613 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 21:55:13,614 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:55:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-20 21:55:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-20 21:55:13,617 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:13,617 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] [2018-01-20 21:55:13,617 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 996677382, now seen corresponding path program 1 times [2018-01-20 21:55:13,617 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:13,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:13,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:13,619 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:13,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:13,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:13,647 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 21:55:13,647 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:13,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:55:13,647 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:55:13,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:55:13,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:55:13,648 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-01-20 21:55:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:13,652 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-01-20 21:55:13,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:55:13,652 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2018-01-20 21:55:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:13,653 INFO L225 Difference]: With dead ends: 64 [2018-01-20 21:55:13,654 INFO L226 Difference]: Without dead ends: 39 [2018-01-20 21:55:13,654 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 21:55:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-20 21:55:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-01-20 21:55:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-20 21:55:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-20 21:55:13,659 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 31 [2018-01-20 21:55:13,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:13,660 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-20 21:55:13,660 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:55:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-20 21:55:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-20 21:55:13,661 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:55:13,661 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:55:13,662 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 21:55:13,662 INFO L82 PathProgramCache]: Analyzing trace with hash -248605416, now seen corresponding path program 1 times [2018-01-20 21:55:13,662 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:55:13,662 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:55:13,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:13,663 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:55:13,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:55:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:55:13,680 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:55:13,927 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 21:55:13,928 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:55:13,928 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-20 21:55:13,929 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-20 21:55:13,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-20 21:55:13,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-20 21:55:13,929 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 9 states. [2018-01-20 21:55:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:55:14,169 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-01-20 21:55:14,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-20 21:55:14,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-01-20 21:55:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:55:14,170 INFO L225 Difference]: With dead ends: 39 [2018-01-20 21:55:14,170 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:55:14,171 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-20 21:55:14,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:55:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:55:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:55:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:55:14,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-01-20 21:55:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:55:14,172 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:55:14,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-20 21:55:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:55:14,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:55:14,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:55:14 BoogieIcfgContainer [2018-01-20 21:55:14,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 21:55:14,177 INFO L168 Benchmark]: Toolchain (without parser) took 2446.22 ms. Allocated memory was 298.8 MB in the beginning and 471.3 MB in the end (delta: 172.5 MB). Free memory was 257.8 MB in the beginning and 422.2 MB in the end (delta: -164.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:14,178 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 298.8 MB. Free memory is still 263.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 21:55:14,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.17 ms. Allocated memory is still 298.8 MB. Free memory was 257.8 MB in the beginning and 247.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:14,184 INFO L168 Benchmark]: Boogie Preprocessor took 26.42 ms. Allocated memory is still 298.8 MB. Free memory was 247.8 MB in the beginning and 245.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:14,185 INFO L168 Benchmark]: RCFGBuilder took 267.09 ms. Allocated memory is still 298.8 MB. Free memory was 245.8 MB in the beginning and 228.9 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:55:14,185 INFO L168 Benchmark]: TraceAbstraction took 1954.90 ms. Allocated memory was 298.8 MB in the beginning and 471.3 MB in the end (delta: 172.5 MB). Free memory was 228.9 MB in the beginning and 422.2 MB in the end (delta: -193.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 21:55:14,187 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 298.8 MB. Free memory is still 263.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 192.17 ms. Allocated memory is still 298.8 MB. Free memory was 257.8 MB in the beginning and 247.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.42 ms. Allocated memory is still 298.8 MB. Free memory was 247.8 MB in the beginning and 245.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 267.09 ms. Allocated memory is still 298.8 MB. Free memory was 245.8 MB in the beginning and 228.9 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1954.90 ms. Allocated memory was 298.8 MB in the beginning and 471.3 MB in the end (delta: 172.5 MB). Free memory was 228.9 MB in the beginning and 422.2 MB in the end (delta: -193.3 MB). There was no memory consumed. 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, 45 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=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - 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: cstrcmpErr0EnsuresViolation CFG has 4 procedures, 45 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 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=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 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: [L552] int length1 = __VERIFIER_nondet_int(); [L553] int length2 = __VERIFIER_nondet_int(); [L554] COND TRUE length1 < 1 [L555] length1 = 1 VAL [length1=1, length2=0] [L557] COND TRUE length2 < 1 [L558] length2 = 1 VAL [length1=1, length2=1] [L560] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1] [L560] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={3:0}] [L561] 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}] [L561] 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}] [L562] 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}] [L563] 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}] [L564] CALL, EXPR cstrcmp(nondetString1,nondetString2) VAL [s1={3:0}, s2={4:0}] [L542] unsigned char uc1, uc2; VAL [s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] [L543] EXPR, FCALL \read(*s1) VAL [\read(*s1)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] [L543] *s1 != '\0' && *s1 == *s2 VAL [*s1 != '\0' && *s1 == *s2=0, \read(*s1)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] [L543] COND FALSE !(*s1 != '\0' && *s1 == *s2) [L547] EXPR, FCALL \read(*s1) VAL [\read(*s1)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] [L547] uc1 = (*(unsigned char *) s1) [L548] EXPR, FCALL \read(*s2) VAL [\read(*s2)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, uc1=0] [L548] uc2 = (*(unsigned char *) s2) [L549] COND FALSE, EXPR !((uc1 < uc2) ? -1 : (uc1 > uc2)) VAL [(uc1 < uc2) ? -1 : (uc1 > uc2)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, uc1=0, uc2=0] [L549] RET return ((uc1 < uc2) ? -1 : (uc1 > uc2)); [L564] EXPR cstrcmp(nondetString1,nondetString2) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, cstrcmp(nondetString1,nondetString2)=0, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L564] return cstrcmp(nondetString1,nondetString2); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 45 locations, 4 error locations. UNSAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 90 SDtfs, 47 SDslu, 218 SDs, 0 SdLazy, 104 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=2, 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, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 7000 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: 551]: 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, 45 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 27 SDslu, 30 SDs, 0 SdLazy, 178 SolverSat, 8 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 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, 0.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 7938 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/cstrcmp-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_21-55-14-196.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcmp-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_21-55-14-196.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcmp-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_21-55-14-196.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcmp-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_21-55-14-196.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcmp-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_21-55-14-196.csv Received shutdown request...