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/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memset2_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e [2018-01-31 09:04:14,627 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:04:14,629 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:04:14,657 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:04:14,657 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:04:14,658 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:04:14,660 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:04:14,663 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:04:14,666 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:04:14,666 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:04:14,668 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:04:14,669 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:04:14,670 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:04:14,671 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:04:14,684 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:04:14,688 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:04:14,690 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:04:14,691 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:04:14,692 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:04:14,694 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:04:14,700 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 09:04:14,708 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:04:14,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:04:14,709 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 09:04:14,725 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:04:14,726 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:04:14,727 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:04:14,727 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:04:14,727 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:04:14,728 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:04:14,728 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:04:14,728 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:04:14,728 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:04:14,729 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 09:04:14,729 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:04:14,729 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:04:14,729 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:04:14,729 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 09:04:14,729 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 09:04:14,730 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 09:04:14,730 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:04:14,731 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:04:14,731 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:04:14,731 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:04:14,732 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:04:14,732 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:04:14,732 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:04:14,732 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:04:14,732 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:04:14,732 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:04:14,733 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:04:14,733 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:04:14,733 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:04:14,733 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:04:14,733 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:04:14,734 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:04:14,735 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:04:14,736 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:04:14,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:04:14,805 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:04:14,811 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:04:14,812 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:04:14,813 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:04:14,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memset2_true-valid-memsafety_true-termination.c [2018-01-31 09:04:14,935 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:04:14,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:04:14,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:04:14,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:04:14,955 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:04:14,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:04:14" (1/1) ... [2018-01-31 09:04:14,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3049a2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:14, skipping insertion in model container [2018-01-31 09:04:14,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:04:14" (1/1) ... [2018-01-31 09:04:14,979 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:04:14,998 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:04:15,159 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:04:15,178 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:04:15,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15 WrapperNode [2018-01-31 09:04:15,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:04:15,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:04:15,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:04:15,189 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:04:15,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (1/1) ... [2018-01-31 09:04:15,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (1/1) ... [2018-01-31 09:04:15,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (1/1) ... [2018-01-31 09:04:15,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (1/1) ... [2018-01-31 09:04:15,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (1/1) ... [2018-01-31 09:04:15,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (1/1) ... [2018-01-31 09:04:15,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (1/1) ... [2018-01-31 09:04:15,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:04:15,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:04:15,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:04:15,225 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:04:15,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (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 [2018-01-31 09:04:15,294 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:04:15,294 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:04:15,294 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:04:15,294 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:04:15,294 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:04:15,295 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:04:15,295 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-31 09:04:15,298 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-31 09:04:15,298 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-31 09:04:15,299 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:04:15,299 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:04:15,299 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:04:15,453 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-31 09:04:15,677 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:04:15,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:04:15 BoogieIcfgContainer [2018-01-31 09:04:15,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:04:15,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:04:15,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:04:15,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:04:15,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:04:14" (1/3) ... [2018-01-31 09:04:15,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb2ede8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:04:15, skipping insertion in model container [2018-01-31 09:04:15,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:15" (2/3) ... [2018-01-31 09:04:15,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb2ede8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:04:15, skipping insertion in model container [2018-01-31 09:04:15,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:04:15" (3/3) ... [2018-01-31 09:04:15,685 INFO L107 eAbstractionObserver]: Analyzing ICFG memset2_true-valid-memsafety_true-termination.c [2018-01-31 09:04:15,693 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:04:15,700 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-31 09:04:15,744 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:04:15,744 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:04:15,745 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:04:15,745 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:04:15,745 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:04:15,745 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:04:15,745 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:04:15,745 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:04:15,746 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:04:15,761 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-31 09:04:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-31 09:04:15,767 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:15,768 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:15,768 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:04:15,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1964876918, now seen corresponding path program 1 times [2018-01-31 09:04:15,773 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:15,773 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:15,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:15,830 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:15,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:15,903 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:16,031 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:16,031 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:04:16,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:04:16,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:04:16,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:04:16,050 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2018-01-31 09:04:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:16,216 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-01-31 09:04:16,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:04:16,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-01-31 09:04:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:16,233 INFO L225 Difference]: With dead ends: 26 [2018-01-31 09:04:16,233 INFO L226 Difference]: Without dead ends: 22 [2018-01-31 09:04:16,242 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:04:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-01-31 09:04:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-01-31 09:04:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-31 09:04:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-01-31 09:04:16,362 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2018-01-31 09:04:16,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:16,363 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-01-31 09:04:16,363 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:04:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-01-31 09:04:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-31 09:04:16,364 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:16,364 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:16,364 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:04:16,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1964876917, now seen corresponding path program 1 times [2018-01-31 09:04:16,364 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:16,365 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:16,366 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:16,366 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:16,366 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:16,392 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:16,505 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:16,505 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:04:16,507 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:04:16,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:04:16,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:04:16,508 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2018-01-31 09:04:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:16,550 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-01-31 09:04:16,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:04:16,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-01-31 09:04:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:16,552 INFO L225 Difference]: With dead ends: 22 [2018-01-31 09:04:16,552 INFO L226 Difference]: Without dead ends: 21 [2018-01-31 09:04:16,553 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:04:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-01-31 09:04:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-01-31 09:04:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-01-31 09:04:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-01-31 09:04:16,559 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2018-01-31 09:04:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:16,559 INFO L432 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-01-31 09:04:16,559 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:04:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-01-31 09:04:16,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-31 09:04:16,560 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:16,560 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:16,560 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:04:16,560 INFO L82 PathProgramCache]: Analyzing trace with hash 385100327, now seen corresponding path program 1 times [2018-01-31 09:04:16,561 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:16,561 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:16,562 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:16,562 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:16,562 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:16,588 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:16,656 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:16,656 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 09:04:16,657 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:04:16,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:04:16,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:04:16,657 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 4 states. [2018-01-31 09:04:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:16,737 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-01-31 09:04:16,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-31 09:04:16,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-01-31 09:04:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:16,739 INFO L225 Difference]: With dead ends: 31 [2018-01-31 09:04:16,739 INFO L226 Difference]: Without dead ends: 23 [2018-01-31 09:04:16,739 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:04:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-01-31 09:04:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-01-31 09:04:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-31 09:04:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-01-31 09:04:16,744 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-01-31 09:04:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:16,745 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-01-31 09:04:16,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:04:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-01-31 09:04:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-31 09:04:16,746 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:16,746 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:16,746 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:04:16,747 INFO L82 PathProgramCache]: Analyzing trace with hash -585984312, now seen corresponding path program 1 times [2018-01-31 09:04:16,747 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:16,747 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:16,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:16,748 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:16,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:16,763 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:16,945 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:04:16,945 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:04:16,955 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:17,012 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:04:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:17,192 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:04:17,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-01-31 09:04:17,193 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-31 09:04:17,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-31 09:04:17,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:04:17,194 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-01-31 09:04:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:17,283 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-01-31 09:04:17,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-31 09:04:17,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-01-31 09:04:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:17,285 INFO L225 Difference]: With dead ends: 33 [2018-01-31 09:04:17,285 INFO L226 Difference]: Without dead ends: 25 [2018-01-31 09:04:17,285 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:04:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-31 09:04:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-01-31 09:04:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-31 09:04:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-01-31 09:04:17,290 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-01-31 09:04:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:17,290 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-01-31 09:04:17,290 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-31 09:04:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-01-31 09:04:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-31 09:04:17,291 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:17,291 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:17,292 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:04:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1790419159, now seen corresponding path program 2 times [2018-01-31 09:04:17,292 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:17,292 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:17,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:17,293 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:17,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:17,313 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:17,553 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:04:17,553 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:04:17,563 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:04:17,575 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:17,577 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:04:17,580 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:04:17,633 INFO L700 Elim1Store]: detected not equals via solver [2018-01-31 09:04:17,641 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-01-31 09:04:17,641 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 09:04:17,671 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-31 09:04:17,671 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-31 09:04:17,820 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#cstats~2.base| Int)) (and (= (select |c_old(#valid)| |main_~#cstats~2.base|) 0) (= |c_#valid| (store |c_old(#valid)| |main_~#cstats~2.base| 0)))) is different from true [2018-01-31 09:04:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-31 09:04:17,857 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:04:17,858 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2018-01-31 09:04:17,858 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:04:17,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:04:17,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2018-01-31 09:04:17,859 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 10 states. [2018-01-31 09:04:18,335 WARN L143 SmtUtils]: Spent 141ms on a formula simplification that was a NOOP. DAG size: 17 [2018-01-31 09:04:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:18,481 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-01-31 09:04:18,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-31 09:04:18,481 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-01-31 09:04:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:18,482 INFO L225 Difference]: With dead ends: 34 [2018-01-31 09:04:18,482 INFO L226 Difference]: Without dead ends: 0 [2018-01-31 09:04:18,483 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=146, Unknown=1, NotChecked=26, Total=240 [2018-01-31 09:04:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-31 09:04:18,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-31 09:04:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-31 09:04:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-31 09:04:18,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-01-31 09:04:18,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:18,484 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-31 09:04:18,484 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:04:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-31 09:04:18,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-31 09:04:18,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-31 09:04:18,661 INFO L399 ceAbstractionStarter]: For program point L1(lines 1 24) no Hoare annotation was computed. [2018-01-31 09:04:18,661 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 24) no Hoare annotation was computed. [2018-01-31 09:04:18,662 INFO L395 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 24) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-31 09:04:18,662 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 24) no Hoare annotation was computed. [2018-01-31 09:04:18,662 INFO L402 ceAbstractionStarter]: At program point #Ultimate.C_memsetENTRY(line -1) the Hoare annotation is: true [2018-01-31 09:04:18,662 INFO L399 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-01-31 09:04:18,662 INFO L399 ceAbstractionStarter]: For program point L-1'(line -1) no Hoare annotation was computed. [2018-01-31 09:04:18,663 INFO L402 ceAbstractionStarter]: At program point L-1''(line -1) the Hoare annotation is: true [2018-01-31 09:04:18,663 INFO L399 ceAbstractionStarter]: For program point #Ultimate.C_memsetFINAL(line -1) no Hoare annotation was computed. [2018-01-31 09:04:18,663 INFO L399 ceAbstractionStarter]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2018-01-31 09:04:18,663 INFO L399 ceAbstractionStarter]: For program point #Ultimate.C_memsetEXIT(line -1) no Hoare annotation was computed. [2018-01-31 09:04:18,663 INFO L402 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 24) the Hoare annotation is: true [2018-01-31 09:04:18,663 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 24) no Hoare annotation was computed. [2018-01-31 09:04:18,664 INFO L402 ceAbstractionStarter]: At program point L1(lines 1 24) the Hoare annotation is: true [2018-01-31 09:04:18,664 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 24) no Hoare annotation was computed. [2018-01-31 09:04:18,664 INFO L395 ceAbstractionStarter]: At program point mainENTRY(lines 20 24) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-31 09:04:18,664 INFO L399 ceAbstractionStarter]: For program point mainErr1RequiresViolation(line -1) no Hoare annotation was computed. [2018-01-31 09:04:18,664 INFO L399 ceAbstractionStarter]: For program point mainFINAL(lines 20 24) no Hoare annotation was computed. [2018-01-31 09:04:18,664 INFO L399 ceAbstractionStarter]: For program point mainErr2EnsuresViolation(lines 20 24) no Hoare annotation was computed. [2018-01-31 09:04:18,665 INFO L395 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (= |main_~#cstats~2.offset| 0) (= (select |#length| |main_~#cstats~2.base|) 40) (= |#valid| (store |old(#valid)| |main_~#cstats~2.base| 1)) (= (select |old(#valid)| |main_~#cstats~2.base|) 0)) [2018-01-31 09:04:18,665 INFO L399 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-01-31 09:04:18,665 INFO L399 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-01-31 09:04:18,665 INFO L399 ceAbstractionStarter]: For program point mainErr0RequiresViolation(line -1) no Hoare annotation was computed. [2018-01-31 09:04:18,665 INFO L399 ceAbstractionStarter]: For program point L21''(line 21) no Hoare annotation was computed. [2018-01-31 09:04:18,665 INFO L399 ceAbstractionStarter]: For program point L21'(line 21) no Hoare annotation was computed. [2018-01-31 09:04:18,666 INFO L399 ceAbstractionStarter]: For program point mainEXIT(lines 20 24) no Hoare annotation was computed. [2018-01-31 09:04:18,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:04:18 BoogieIcfgContainer [2018-01-31 09:04:18,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:04:18,672 INFO L168 Benchmark]: Toolchain (without parser) took 3736.43 ms. Allocated memory was 306.7 MB in the beginning and 462.9 MB in the end (delta: 156.2 MB). Free memory was 267.6 MB in the beginning and 341.2 MB in the end (delta: -73.6 MB). Peak memory consumption was 82.7 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:18,674 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 306.7 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:04:18,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.70 ms. Allocated memory is still 306.7 MB. Free memory was 265.6 MB in the beginning and 257.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:18,674 INFO L168 Benchmark]: Boogie Preprocessor took 36.65 ms. Allocated memory is still 306.7 MB. Free memory is still 257.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:04:18,675 INFO L168 Benchmark]: RCFGBuilder took 452.55 ms. Allocated memory is still 306.7 MB. Free memory was 257.6 MB in the beginning and 244.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:18,675 INFO L168 Benchmark]: TraceAbstraction took 2993.13 ms. Allocated memory was 306.7 MB in the beginning and 462.9 MB in the end (delta: 156.2 MB). Free memory was 242.7 MB in the beginning and 341.2 MB in the end (delta: -98.5 MB). Peak memory consumption was 57.7 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:18,677 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 306.7 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 239.70 ms. Allocated memory is still 306.7 MB. Free memory was 265.6 MB in the beginning and 257.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.65 ms. Allocated memory is still 306.7 MB. Free memory is still 257.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 452.55 ms. Allocated memory is still 306.7 MB. Free memory was 257.6 MB in the beginning and 244.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2993.13 ms. Allocated memory was 306.7 MB in the beginning and 462.9 MB in the end (delta: 156.2 MB). Free memory was 242.7 MB in the beginning and 341.2 MB in the end (delta: -98.5 MB). Peak memory consumption was 57.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 3 error locations. SAFE Result, 2.9s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 91 SDtfs, 34 SDslu, 144 SDs, 0 SdLazy, 108 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 10 NumberOfFragments, 30 HoareAnnotationTreeSize, 7 FomulaSimplifications, 61 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 123 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 116 ConstructedInterpolants, 12 QuantifiedInterpolants, 6790 SizeOfPredicates, 2 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 4/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset2_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_09-04-18-685.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset2_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_09-04-18-685.csv Received shutdown request...