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/array-memsafety/cstrchr-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 21:00:23,661 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 21:00:23,662 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 21:00:23,677 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 21:00:23,677 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 21:00:23,678 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 21:00:23,679 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 21:00:23,681 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 21:00:23,683 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 21:00:23,684 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 21:00:23,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 21:00:23,685 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 21:00:23,686 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 21:00:23,687 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 21:00:23,688 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 21:00:23,690 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 21:00:23,692 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 21:00:23,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 21:00:23,696 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 21:00:23,697 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 21:00:23,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-28 21:00:23,704 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 21:00:23,705 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 21:00:23,705 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 [2018-01-28 21:00:23,713 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 21:00:23,713 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 21:00:23,714 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 21:00:23,714 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 21:00:23,715 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 21:00:23,715 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 21:00:23,715 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 21:00:23,715 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 21:00:23,716 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 21:00:23,716 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 21:00:23,716 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 21:00:23,716 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 21:00:23,716 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 21:00:23,717 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 21:00:23,717 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 21:00:23,717 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 21:00:23,717 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 21:00:23,717 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 21:00:23,717 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 21:00:23,717 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 21:00:23,718 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 21:00:23,718 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 21:00:23,718 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 21:00:23,718 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 21:00:23,718 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 21:00:23,719 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 21:00:23,719 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 21:00:23,719 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 21:00:23,719 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 21:00:23,719 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 21:00:23,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 21:00:23,719 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 21:00:23,720 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 21:00:23,720 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 21:00:23,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 21:00:23,762 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 21:00:23,765 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 21:00:23,766 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 21:00:23,767 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 21:00:23,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrchr-alloca_true-valid-memsafety_true-termination.i [2018-01-28 21:00:24,012 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 21:00:24,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 21:00:24,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 21:00:24,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 21:00:24,023 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 21:00:24,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2013e725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24, skipping insertion in model container [2018-01-28 21:00:24,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,040 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 21:00:24,082 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 21:00:24,217 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 21:00:24,234 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 21:00:24,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24 WrapperNode [2018-01-28 21:00:24,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 21:00:24,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 21:00:24,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 21:00:24,242 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 21:00:24,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (1/1) ... [2018-01-28 21:00:24,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 21:00:24,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 21:00:24,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 21:00:24,282 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 21:00:24,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (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 [2018-01-28 21:00:24,345 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 21:00:24,346 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 21:00:24,346 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrchr [2018-01-28 21:00:24,346 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 21:00:24,346 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 21:00:24,346 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 21:00:24,347 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 21:00:24,347 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 21:00:24,347 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 21:00:24,347 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 21:00:24,347 INFO L128 BoogieDeclarations]: Found specification of procedure cstrchr [2018-01-28 21:00:24,347 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 21:00:24,348 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 21:00:24,348 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 21:00:24,599 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 21:00:24,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:00:24 BoogieIcfgContainer [2018-01-28 21:00:24,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 21:00:24,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 21:00:24,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 21:00:24,602 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 21:00:24,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:00:24" (1/3) ... [2018-01-28 21:00:24,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aba4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:00:24, skipping insertion in model container [2018-01-28 21:00:24,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:00:24" (2/3) ... [2018-01-28 21:00:24,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aba4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:00:24, skipping insertion in model container [2018-01-28 21:00:24,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:00:24" (3/3) ... [2018-01-28 21:00:24,606 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrchr-alloca_true-valid-memsafety_true-termination.i [2018-01-28 21:00:24,612 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 21:00:24,618 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-01-28 21:00:24,665 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 21:00:24,686 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 21:00:24,687 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 21:00:24,687 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 21:00:24,687 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 21:00:24,687 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 21:00:24,687 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 21:00:24,687 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 21:00:24,688 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 21:00:24,707 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-01-28 21:00:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-28 21:00:24,714 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:24,715 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:00:24,715 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:24,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1900740219, now seen corresponding path program 1 times [2018-01-28 21:00:24,722 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:24,723 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:24,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:24,774 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:24,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:24,825 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:24,903 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:00:24,903 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 21:00:24,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 21:00:24,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 21:00:24,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 21:00:24,922 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2018-01-28 21:00:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:25,087 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2018-01-28 21:00:25,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-28 21:00:25,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-28 21:00:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:25,096 INFO L225 Difference]: With dead ends: 82 [2018-01-28 21:00:25,096 INFO L226 Difference]: Without dead ends: 57 [2018-01-28 21:00:25,098 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 21:00:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-28 21:00:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-01-28 21:00:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-28 21:00:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2018-01-28 21:00:25,129 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 13 [2018-01-28 21:00:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:25,130 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2018-01-28 21:00:25,130 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 21:00:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2018-01-28 21:00:25,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-28 21:00:25,130 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:25,130 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:00:25,131 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:25,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1900740220, now seen corresponding path program 1 times [2018-01-28 21:00:25,131 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:25,131 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:25,132 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,132 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:25,132 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:25,146 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:25,249 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:00:25,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 21:00:25,251 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 21:00:25,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 21:00:25,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 21:00:25,251 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 5 states. [2018-01-28 21:00:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:25,373 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2018-01-28 21:00:25,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 21:00:25,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-01-28 21:00:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:25,374 INFO L225 Difference]: With dead ends: 57 [2018-01-28 21:00:25,375 INFO L226 Difference]: Without dead ends: 56 [2018-01-28 21:00:25,375 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-28 21:00:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-28 21:00:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-01-28 21:00:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-28 21:00:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-01-28 21:00:25,383 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 13 [2018-01-28 21:00:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:25,383 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-01-28 21:00:25,383 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 21:00:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-01-28 21:00:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-28 21:00:25,384 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:25,384 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:00:25,385 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:25,385 INFO L82 PathProgramCache]: Analyzing trace with hash -111322581, now seen corresponding path program 1 times [2018-01-28 21:00:25,385 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:25,385 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:25,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,386 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:25,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:25,402 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:25,439 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:00:25,439 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 21:00:25,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 21:00:25,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 21:00:25,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 21:00:25,440 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2018-01-28 21:00:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:25,507 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2018-01-28 21:00:25,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 21:00:25,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-28 21:00:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:25,508 INFO L225 Difference]: With dead ends: 60 [2018-01-28 21:00:25,508 INFO L226 Difference]: Without dead ends: 57 [2018-01-28 21:00:25,508 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-28 21:00:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-28 21:00:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-01-28 21:00:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-28 21:00:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-01-28 21:00:25,513 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 19 [2018-01-28 21:00:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:25,513 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-01-28 21:00:25,514 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 21:00:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-01-28 21:00:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-28 21:00:25,514 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:25,514 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:00:25,514 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:25,514 INFO L82 PathProgramCache]: Analyzing trace with hash -111322580, now seen corresponding path program 1 times [2018-01-28 21:00:25,515 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:25,515 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:25,515 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,515 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:25,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:25,525 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:25,607 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:00:25,607 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-28 21:00:25,608 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-28 21:00:25,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-28 21:00:25,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-01-28 21:00:25,608 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 8 states. [2018-01-28 21:00:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:25,767 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2018-01-28 21:00:25,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 21:00:25,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-01-28 21:00:25,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:25,772 INFO L225 Difference]: With dead ends: 81 [2018-01-28 21:00:25,772 INFO L226 Difference]: Without dead ends: 78 [2018-01-28 21:00:25,772 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-01-28 21:00:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-28 21:00:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2018-01-28 21:00:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-28 21:00:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-01-28 21:00:25,781 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 19 [2018-01-28 21:00:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:25,782 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-01-28 21:00:25,782 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-28 21:00:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-01-28 21:00:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-28 21:00:25,783 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:25,783 INFO L330 BasicCegarLoop]: trace histogram [2, 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] [2018-01-28 21:00:25,783 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1981825201, now seen corresponding path program 1 times [2018-01-28 21:00:25,784 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:25,784 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:25,785 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,785 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:25,785 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:25,801 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:25,822 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:00:25,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 21:00:25,823 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-28 21:00:25,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-28 21:00:25,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-28 21:00:25,824 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 3 states. [2018-01-28 21:00:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:25,837 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2018-01-28 21:00:25,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-28 21:00:25,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-01-28 21:00:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:25,839 INFO L225 Difference]: With dead ends: 103 [2018-01-28 21:00:25,839 INFO L226 Difference]: Without dead ends: 67 [2018-01-28 21:00:25,840 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-28 21:00:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-28 21:00:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-01-28 21:00:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-28 21:00:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2018-01-28 21:00:25,845 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 30 [2018-01-28 21:00:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:25,845 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2018-01-28 21:00:25,845 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-28 21:00:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2018-01-28 21:00:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-28 21:00:25,846 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:25,846 INFO L330 BasicCegarLoop]: trace histogram [2, 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] [2018-01-28 21:00:25,846 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1698677106, now seen corresponding path program 1 times [2018-01-28 21:00:25,847 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:25,847 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:25,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,848 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:25,848 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:25,864 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-28 21:00:25,937 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:00:25,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 21:00:25,937 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 21:00:25,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 21:00:25,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 21:00:25,938 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 6 states. [2018-01-28 21:00:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:26,035 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2018-01-28 21:00:26,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 21:00:26,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-01-28 21:00:26,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:26,036 INFO L225 Difference]: With dead ends: 67 [2018-01-28 21:00:26,036 INFO L226 Difference]: Without dead ends: 66 [2018-01-28 21:00:26,037 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-01-28 21:00:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-28 21:00:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-28 21:00:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-28 21:00:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2018-01-28 21:00:26,044 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 32 [2018-01-28 21:00:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:26,046 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2018-01-28 21:00:26,046 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 21:00:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2018-01-28 21:00:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-28 21:00:26,047 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:26,047 INFO L330 BasicCegarLoop]: trace histogram [2, 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] [2018-01-28 21:00:26,048 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:26,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1698677107, now seen corresponding path program 1 times [2018-01-28 21:00:26,048 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:26,048 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:26,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:26,049 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:26,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:26,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:26,367 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:00:26,367 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 [2018-01-28 21:00:26,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:26,412 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:00:26,451 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-01-28 21:00:26,456 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-01-28 21:00:26,457 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 21:00:26,477 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 21:00:26,483 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 21:00:26,483 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-01-28 21:00:26,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-01-28 21:00:26,612 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-01-28 21:00:26,613 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-28 21:00:26,618 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-28 21:00:26,639 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-28 21:00:26,639 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-01-28 21:00:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:26,925 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:00:26,925 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2018-01-28 21:00:26,926 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-28 21:00:26,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-28 21:00:26,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-01-28 21:00:26,927 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 20 states. [2018-01-28 21:00:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:28,369 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2018-01-28 21:00:28,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-28 21:00:28,370 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 32 [2018-01-28 21:00:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:28,371 INFO L225 Difference]: With dead ends: 120 [2018-01-28 21:00:28,371 INFO L226 Difference]: Without dead ends: 117 [2018-01-28 21:00:28,372 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2018-01-28 21:00:28,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-01-28 21:00:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2018-01-28 21:00:28,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-28 21:00:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2018-01-28 21:00:28,382 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 32 [2018-01-28 21:00:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:28,383 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2018-01-28 21:00:28,383 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-28 21:00:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2018-01-28 21:00:28,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-28 21:00:28,384 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:28,384 INFO L330 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, 1, 1] [2018-01-28 21:00:28,384 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:28,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1460258200, now seen corresponding path program 1 times [2018-01-28 21:00:28,385 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:28,385 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:28,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:28,386 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:28,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:28,401 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:28,448 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:00:28,448 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 21:00:28,448 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 21:00:28,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 21:00:28,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 21:00:28,449 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 4 states. [2018-01-28 21:00:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:28,544 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2018-01-28 21:00:28,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 21:00:28,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-01-28 21:00:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:28,545 INFO L225 Difference]: With dead ends: 79 [2018-01-28 21:00:28,546 INFO L226 Difference]: Without dead ends: 59 [2018-01-28 21:00:28,546 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 21:00:28,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-28 21:00:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-01-28 21:00:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-28 21:00:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-01-28 21:00:28,551 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 39 [2018-01-28 21:00:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:28,552 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-01-28 21:00:28,552 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 21:00:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-01-28 21:00:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-28 21:00:28,552 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:00:28,552 INFO L330 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:00:28,553 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 21:00:28,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1187011188, now seen corresponding path program 2 times [2018-01-28 21:00:28,553 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:00:28,553 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:00:28,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:28,554 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:00:28,554 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:00:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:00:28,572 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:00:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:28,988 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 21:00:28,988 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 [2018-01-28 21:00:28,994 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 21:00:29,004 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:00:29,010 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 21:00:29,011 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 21:00:29,014 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 21:00:29,017 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 21:00:29,017 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 21:00:29,020 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 21:00:29,020 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 21:00:29,053 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-01-28 21:00:29,055 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-01-28 21:00:29,055 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 21:00:29,056 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 21:00:29,060 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 21:00:29,060 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-01-28 21:00:29,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-01-28 21:00:29,257 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-01-28 21:00:29,257 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-28 21:00:29,260 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-28 21:00:29,273 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-28 21:00:29,273 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:49 [2018-01-28 21:00:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:00:29,373 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 21:00:29,374 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2018-01-28 21:00:29,375 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-28 21:00:29,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-28 21:00:29,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2018-01-28 21:00:29,375 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 23 states. [2018-01-28 21:00:30,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:00:30,455 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-01-28 21:00:30,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-28 21:00:30,455 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2018-01-28 21:00:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:00:30,455 INFO L225 Difference]: With dead ends: 68 [2018-01-28 21:00:30,455 INFO L226 Difference]: Without dead ends: 0 [2018-01-28 21:00:30,456 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=268, Invalid=1372, Unknown=0, NotChecked=0, Total=1640 [2018-01-28 21:00:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-28 21:00:30,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-28 21:00:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-28 21:00:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-28 21:00:30,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-01-28 21:00:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:00:30,457 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-28 21:00:30,457 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-28 21:00:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-28 21:00:30,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-28 21:00:30,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-28 21:00:31,064 WARN L146 SmtUtils]: Spent 563ms on a formula simplification. DAG size of input: 82 DAG size of output 57 [2018-01-28 21:00:31,105 INFO L399 ceAbstractionStarter]: For program point cstrchrErr3RequiresViolation(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,105 INFO L399 ceAbstractionStarter]: For program point cstrchrEXIT(lines 540 545) no Hoare annotation was computed. [2018-01-28 21:00:31,105 INFO L399 ceAbstractionStarter]: For program point L542(lines 542 543) no Hoare annotation was computed. [2018-01-28 21:00:31,105 INFO L399 ceAbstractionStarter]: For program point L542'''''''''''''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,106 INFO L399 ceAbstractionStarter]: For program point L540(lines 540 545) no Hoare annotation was computed. [2018-01-28 21:00:31,106 INFO L399 ceAbstractionStarter]: For program point L544(line 544) no Hoare annotation was computed. [2018-01-28 21:00:31,106 INFO L399 ceAbstractionStarter]: For program point L543(line 543) no Hoare annotation was computed. [2018-01-28 21:00:31,106 INFO L399 ceAbstractionStarter]: For program point cstrchrErr2RequiresViolation(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,106 INFO L399 ceAbstractionStarter]: For program point L542'''''''''''''''(lines 542 543) no Hoare annotation was computed. [2018-01-28 21:00:31,106 INFO L399 ceAbstractionStarter]: For program point L542''''''''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,106 INFO L399 ceAbstractionStarter]: For program point L542'(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,106 INFO L399 ceAbstractionStarter]: For program point cstrchrErr1RequiresViolation(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L399 ceAbstractionStarter]: For program point cstrchrErr4RequiresViolation(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L399 ceAbstractionStarter]: For program point L544''''''(line 544) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L399 ceAbstractionStarter]: For program point L542'''''''''''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L399 ceAbstractionStarter]: For program point L543'(line 543) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L399 ceAbstractionStarter]: For program point L543''(line 543) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L399 ceAbstractionStarter]: For program point L544'''(line 544) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L399 ceAbstractionStarter]: For program point L544''''(line 544) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L399 ceAbstractionStarter]: For program point L542'''''''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,107 INFO L395 ceAbstractionStarter]: At program point L542''''''''''''''(lines 542 543) the Hoare annotation is: (or (and (exists ((v_main_~nondetString~3.offset_BEFORE_CALL_2 Int)) (and (<= v_main_~nondetString~3.offset_BEFORE_CALL_2 cstrchr_~s.offset) (<= 0 v_main_~nondetString~3.offset_BEFORE_CALL_2) (= 0 (select (select |#memory_int| cstrchr_~s.base) (+ v_main_~nondetString~3.offset_BEFORE_CALL_2 (select |#length| cstrchr_~s.base) (- 1)))) (<= v_main_~nondetString~3.offset_BEFORE_CALL_2 0))) (exists ((main_~length~3 Int) (v_main_~nondetString~3.offset_BEFORE_CALL_1 Int)) (and (<= (+ main_~length~3 v_main_~nondetString~3.offset_BEFORE_CALL_1) (select |#length| cstrchr_~s.base)) (<= 1 main_~length~3) (<= cstrchr_~s.offset v_main_~nondetString~3.offset_BEFORE_CALL_1) (= (select (select |#memory_int| cstrchr_~s.base) (+ main_~length~3 v_main_~nondetString~3.offset_BEFORE_CALL_1 (- 1))) 0))) (= 1 (select |#valid| cstrchr_~s.base))) (not (= 1 (select |#valid| |cstrchr_#in~s.base|))) (not (exists ((v_main_~nondetString~3.offset_BEFORE_CALL_2 Int)) (and (<= 0 v_main_~nondetString~3.offset_BEFORE_CALL_2) (<= v_main_~nondetString~3.offset_BEFORE_CALL_2 |cstrchr_#in~s.offset|) (= 0 (select (select |#memory_int| |cstrchr_#in~s.base|) (+ v_main_~nondetString~3.offset_BEFORE_CALL_2 (select |#length| |cstrchr_#in~s.base|) (- 1)))) (<= v_main_~nondetString~3.offset_BEFORE_CALL_2 0)))) (not (exists ((main_~length~3 Int) (v_main_~nondetString~3.offset_BEFORE_CALL_1 Int)) (and (<= 1 main_~length~3) (= (select (select |#memory_int| |cstrchr_#in~s.base|) (+ main_~length~3 v_main_~nondetString~3.offset_BEFORE_CALL_1 (- 1))) 0) (<= (+ main_~length~3 v_main_~nondetString~3.offset_BEFORE_CALL_1) (select |#length| |cstrchr_#in~s.base|)) (<= |cstrchr_#in~s.offset| v_main_~nondetString~3.offset_BEFORE_CALL_1)))) (not (= 0 |cstrchr_#in~s.offset|))) [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L544'(line 544) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point cstrchrErr5RequiresViolation(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point cstrchrFINAL(lines 540 545) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L542'''''''''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L542''''''''''''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L542''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L542''''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L542''''''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L402 ceAbstractionStarter]: At program point cstrchrENTRY(lines 540 545) the Hoare annotation is: true [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L544'''''(line 544) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L542'''(line 542) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point cstrchrErr0RequiresViolation(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point L1(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,108 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,109 INFO L395 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 555) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-28 21:00:31,109 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,109 INFO L402 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 555) the Hoare annotation is: true [2018-01-28 21:00:31,109 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,109 INFO L402 ceAbstractionStarter]: At program point L1(lines 1 555) the Hoare annotation is: true [2018-01-28 21:00:31,109 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,109 INFO L399 ceAbstractionStarter]: For program point mainErr1RequiresViolation(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,109 INFO L395 ceAbstractionStarter]: At program point L553(line 553) the Hoare annotation is: (let ((.cse0 (select |#length| main_~nondetString~3.base))) (and (= 1 (select |#valid| main_~nondetString~3.base)) (= 0 (select (select |#memory_int| main_~nondetString~3.base) (+ .cse0 main_~nondetString~3.offset (- 1)))) (= 0 |main_#t~malloc7.offset|) (exists ((main_~length~3 Int)) (and (<= 1 main_~length~3) (= 0 (select (select |#memory_int| main_~nondetString~3.base) (+ main_~nondetString~3.offset main_~length~3 (- 1)))) (<= (+ main_~nondetString~3.offset main_~length~3) (select |#length| main_~nondetString~3.base)))) (= main_~length~3 (select |#length| |main_#t~malloc7.base|)) (= 1 (select |#valid| |main_#t~malloc7.base|)) (= (store |#valid| |main_#t~malloc7.base| 0) |old(#valid)|) (= main_~nondetString~3.offset 0) (= main_~length~3 .cse0))) [2018-01-28 21:00:31,109 INFO L399 ceAbstractionStarter]: For program point L552(line 552) no Hoare annotation was computed. [2018-01-28 21:00:31,109 INFO L399 ceAbstractionStarter]: For program point L551'(line 551) no Hoare annotation was computed. [2018-01-28 21:00:31,109 INFO L399 ceAbstractionStarter]: For program point L551(line 551) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L552'(line 552) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L553'(line 553) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point mainFINAL(lines 546 555) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point mainErr2EnsuresViolation(lines 546 555) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L554(line 554) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L549(line 549) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point mainErr0RequiresViolation(lines 1 555) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L548(lines 548 550) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L547(line 547) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point mainEXIT(lines 546 555) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L395 ceAbstractionStarter]: At program point mainENTRY(lines 546 555) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L551''(line 551) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L553''(line 553) no Hoare annotation was computed. [2018-01-28 21:00:31,110 INFO L399 ceAbstractionStarter]: For program point L547'(line 547) no Hoare annotation was computed. [2018-01-28 21:00:31,111 INFO L399 ceAbstractionStarter]: For program point L548''(lines 548 550) no Hoare annotation was computed. [2018-01-28 21:00:31,116 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,117 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,117 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,118 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,118 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,118 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,118 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,119 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,119 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,119 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,119 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,120 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,120 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,120 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,120 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,121 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,121 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,121 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,121 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,122 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,124 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,124 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,124 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,125 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,125 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,125 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,126 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,126 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,132 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,133 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,133 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,133 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,133 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,133 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,134 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,134 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,134 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,134 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,135 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,135 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,135 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,135 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,136 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,136 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,136 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,136 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,137 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,137 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,137 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,137 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,138 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,138 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,138 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,138 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,139 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,139 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:00:31 BoogieIcfgContainer [2018-01-28 21:00:31,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 21:00:31,143 INFO L168 Benchmark]: Toolchain (without parser) took 7130.11 ms. Allocated memory was 305.7 MB in the beginning and 499.1 MB in the end (delta: 193.5 MB). Free memory was 265.7 MB in the beginning and 444.6 MB in the end (delta: -178.9 MB). Peak memory consumption was 121.4 MB. Max. memory is 5.3 GB. [2018-01-28 21:00:31,145 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 21:00:31,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.21 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 254.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-28 21:00:31,145 INFO L168 Benchmark]: Boogie Preprocessor took 39.99 ms. Allocated memory is still 305.7 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-28 21:00:31,147 INFO L168 Benchmark]: RCFGBuilder took 317.26 ms. Allocated memory is still 305.7 MB. Free memory was 252.6 MB in the beginning and 235.1 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. [2018-01-28 21:00:31,147 INFO L168 Benchmark]: TraceAbstraction took 6542.10 ms. Allocated memory was 305.7 MB in the beginning and 499.1 MB in the end (delta: 193.5 MB). Free memory was 235.1 MB in the beginning and 444.6 MB in the end (delta: -209.5 MB). Peak memory consumption was 90.7 MB. Max. memory is 5.3 GB. [2018-01-28 21:00:31,149 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 223.21 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 254.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 39.99 ms. Allocated memory is still 305.7 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 317.26 ms. Allocated memory is still 305.7 MB. Free memory was 252.6 MB in the beginning and 235.1 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6542.10 ms. Allocated memory was 305.7 MB in the beginning and 499.1 MB in the end (delta: 193.5 MB). Free memory was 235.1 MB in the beginning and 444.6 MB in the end (delta: -209.5 MB). Peak memory consumption was 90.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length * 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: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: 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 9 specifications checked. All of them hold - InvariantResult [Line: 542]: Loop Invariant [2018-01-28 21:00:31,155 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,155 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,155 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,155 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,156 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,156 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,156 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,156 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,156 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,157 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,157 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,157 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,157 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,157 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,158 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,158 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,158 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,158 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,158 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,159 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,159 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,159 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,159 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,159 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,160 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,160 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,160 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,160 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,163 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,163 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,164 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,164 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,164 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,164 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,164 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,165 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,165 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,165 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,165 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,165 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,166 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,166 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_2,QUANTIFIED] [2018-01-28 21:00:31,166 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,166 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,166 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,166 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~length~3,QUANTIFIED] [2018-01-28 21:00:31,166 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,166 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~nondetString~3.offset_BEFORE_CALL_1,QUANTIFIED] [2018-01-28 21:00:31,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-28 21:00:31,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-01-28 21:00:31,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((((\exists v_main_~nondetString~3.offset_BEFORE_CALL_2 : int :: ((v_main_~nondetString~3.offset_BEFORE_CALL_2 <= s && 0 <= v_main_~nondetString~3.offset_BEFORE_CALL_2) && 0 == unknown-#memory_int-unknown[s][v_main_~nondetString~3.offset_BEFORE_CALL_2 + unknown-#length-unknown[s] + -1]) && v_main_~nondetString~3.offset_BEFORE_CALL_2 <= 0) && (\exists main_~length~3 : int, v_main_~nondetString~3.offset_BEFORE_CALL_1 : int :: ((main_~length~3 + v_main_~nondetString~3.offset_BEFORE_CALL_1 <= unknown-#length-unknown[s] && 1 <= main_~length~3) && s <= v_main_~nondetString~3.offset_BEFORE_CALL_1) && unknown-#memory_int-unknown[s][main_~length~3 + v_main_~nondetString~3.offset_BEFORE_CALL_1 + -1] == 0)) && 1 == \valid[s]) || !(1 == \valid[s])) || !(\exists v_main_~nondetString~3.offset_BEFORE_CALL_2 : int :: ((0 <= v_main_~nondetString~3.offset_BEFORE_CALL_2 && v_main_~nondetString~3.offset_BEFORE_CALL_2 <= s) && 0 == unknown-#memory_int-unknown[s][v_main_~nondetString~3.offset_BEFORE_CALL_2 + unknown-#length-unknown[s] + -1]) && v_main_~nondetString~3.offset_BEFORE_CALL_2 <= 0)) || !(\exists main_~length~3 : int, v_main_~nondetString~3.offset_BEFORE_CALL_1 : int :: ((1 <= main_~length~3 && unknown-#memory_int-unknown[s][main_~length~3 + v_main_~nondetString~3.offset_BEFORE_CALL_1 + -1] == 0) && main_~length~3 + v_main_~nondetString~3.offset_BEFORE_CALL_1 <= unknown-#length-unknown[s]) && s <= v_main_~nondetString~3.offset_BEFORE_CALL_1)) || !(0 == s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 61 locations, 9 error locations. SAFE Result, 6.4s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 462 SDtfs, 864 SDslu, 1574 SDs, 0 SdLazy, 887 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=7, 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 52 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 10 NumberOfFragments, 191 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 449 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 308 ConstructedInterpolants, 23 QuantifiedInterpolants, 85995 SizeOfPredicates, 26 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 6/42 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/cstrchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_21-00-31-173.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-28_21-00-31-173.csv Received shutdown request...