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/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 19:09:39,243 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 19:09:39,244 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 19:09:39,253 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 19:09:39,254 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 19:09:39,255 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 19:09:39,255 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 19:09:39,257 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 19:09:39,258 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 19:09:39,259 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 19:09:39,260 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 19:09:39,260 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 19:09:39,261 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 19:09:39,262 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 19:09:39,263 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 19:09:39,265 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 19:09:39,266 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 19:09:39,268 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 19:09:39,269 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 19:09:39,270 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 19:09:39,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 19:09:39,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 19:09:39,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 19:09:39,272 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 19:09:39,273 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 19:09:39,274 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 19:09:39,274 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 19:09:39,274 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 19:09:39,275 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 19:09:39,275 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 19:09:39,275 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 19:09:39,275 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 19:09:39,285 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 19:09:39,286 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 19:09:39,287 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 19:09:39,287 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 19:09:39,287 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 19:09:39,287 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 19:09:39,287 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 19:09:39,288 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 19:09:39,288 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 19:09:39,288 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 19:09:39,288 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 19:09:39,288 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 19:09:39,288 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 19:09:39,288 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 19:09:39,289 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 19:09:39,289 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 19:09:39,289 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 19:09:39,289 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 19:09:39,289 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 19:09:39,289 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 19:09:39,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 19:09:39,290 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 19:09:39,290 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 19:09:39,290 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 19:09:39,290 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 19:09:39,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 19:09:39,328 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 19:09:39,331 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 19:09:39,333 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 19:09:39,333 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 19:09:39,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c [2018-02-02 19:09:39,444 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 19:09:39,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 19:09:39,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 19:09:39,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 19:09:39,452 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 19:09:39,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53250993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39, skipping insertion in model container [2018-02-02 19:09:39,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,471 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 19:09:39,484 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 19:09:39,562 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 19:09:39,573 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 19:09:39,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39 WrapperNode [2018-02-02 19:09:39,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 19:09:39,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 19:09:39,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 19:09:39,578 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 19:09:39,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (1/1) ... [2018-02-02 19:09:39,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 19:09:39,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 19:09:39,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 19:09:39,597 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 19:09:39,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-02 19:09:39,632 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 19:09:39,632 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 19:09:39,632 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-02 19:09:39,632 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 19:09:39,632 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 19:09:39,633 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 19:09:39,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 19:09:39,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 19:09:39,633 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 19:09:39,633 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-02 19:09:39,633 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 19:09:39,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 19:09:39,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 19:09:39,755 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 19:09:39,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 07:09:39 BoogieIcfgContainer [2018-02-02 19:09:39,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 19:09:39,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 19:09:39,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 19:09:39,758 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 19:09:39,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 07:09:39" (1/3) ... [2018-02-02 19:09:39,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225869a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 07:09:39, skipping insertion in model container [2018-02-02 19:09:39,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:09:39" (2/3) ... [2018-02-02 19:09:39,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225869a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 07:09:39, skipping insertion in model container [2018-02-02 19:09:39,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 07:09:39" (3/3) ... [2018-02-02 19:09:39,760 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5_true-valid-memsafety.c [2018-02-02 19:09:39,765 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 19:09:39,769 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-02-02 19:09:39,799 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 19:09:39,800 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 19:09:39,800 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 19:09:39,800 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 19:09:39,800 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 19:09:39,800 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 19:09:39,800 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 19:09:39,800 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 19:09:39,801 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 19:09:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-02-02 19:09:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-02 19:09:39,821 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:39,822 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:39,822 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:39,826 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-02-02 19:09:39,828 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:39,828 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:39,870 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:39,870 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:39,871 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:39,915 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:09:39,974 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:09:39,974 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 19:09:39,975 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 19:09:39,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 19:09:39,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:09:39,986 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-02-02 19:09:40,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:40,051 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-02-02 19:09:40,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 19:09:40,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-02-02 19:09:40,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:40,058 INFO L225 Difference]: With dead ends: 63 [2018-02-02 19:09:40,058 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 19:09:40,060 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:09:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 19:09:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-02-02 19:09:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 19:09:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-02-02 19:09:40,132 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-02-02 19:09:40,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:40,132 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-02-02 19:09:40,132 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 19:09:40,132 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-02-02 19:09:40,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-02 19:09:40,133 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:40,133 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:40,133 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:40,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-02-02 19:09:40,133 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:40,133 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:40,134 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,134 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:40,134 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:40,148 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:09:40,222 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:09:40,223 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 19:09:40,224 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 19:09:40,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 19:09:40,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:09:40,225 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 5 states. [2018-02-02 19:09:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:40,305 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-02-02 19:09:40,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 19:09:40,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-02-02 19:09:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:40,306 INFO L225 Difference]: With dead ends: 65 [2018-02-02 19:09:40,306 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 19:09:40,307 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 19:09:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 19:09:40,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2018-02-02 19:09:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 19:09:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-02-02 19:09:40,311 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 16 [2018-02-02 19:09:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:40,311 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-02-02 19:09:40,311 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 19:09:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-02-02 19:09:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 19:09:40,312 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:40,312 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:40,312 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:40,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1974903447, now seen corresponding path program 1 times [2018-02-02 19:09:40,312 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:40,312 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:40,313 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,313 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:40,313 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:40,322 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:09:40,362 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:09:40,362 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 19:09:40,363 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 19:09:40,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 19:09:40,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:09:40,363 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2018-02-02 19:09:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:40,422 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-02-02 19:09:40,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 19:09:40,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-02-02 19:09:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:40,423 INFO L225 Difference]: With dead ends: 65 [2018-02-02 19:09:40,423 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 19:09:40,424 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:09:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 19:09:40,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2018-02-02 19:09:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-02-02 19:09:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-02-02 19:09:40,429 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 23 [2018-02-02 19:09:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:40,430 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-02-02 19:09:40,430 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 19:09:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-02-02 19:09:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-02 19:09:40,430 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:40,431 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:40,431 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:40,431 INFO L82 PathProgramCache]: Analyzing trace with hash 621927392, now seen corresponding path program 1 times [2018-02-02 19:09:40,431 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:40,431 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:40,432 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,432 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:40,432 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:40,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-02-02 19:09:40,487 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:09:40,487 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 19:09:40,487 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 19:09:40,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 19:09:40,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:09:40,488 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 3 states. [2018-02-02 19:09:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:40,507 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2018-02-02 19:09:40,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 19:09:40,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-02-02 19:09:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:40,510 INFO L225 Difference]: With dead ends: 64 [2018-02-02 19:09:40,510 INFO L226 Difference]: Without dead ends: 64 [2018-02-02 19:09:40,511 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:09:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-02 19:09:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2018-02-02 19:09:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 19:09:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-02-02 19:09:40,515 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 28 [2018-02-02 19:09:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:40,515 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-02-02 19:09:40,515 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 19:09:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-02-02 19:09:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 19:09:40,516 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:40,516 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:40,517 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:40,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2099880015, now seen corresponding path program 1 times [2018-02-02 19:09:40,517 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:40,517 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:40,518 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,518 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:40,518 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:40,529 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 19:09:40,637 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:40,637 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 19:09:40,646 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:40,677 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:40,707 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 [2018-02-02 19:09:40,709 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 19:09:40,712 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 19:09:40,712 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-02 19:09:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 19:09:40,801 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:40,801 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2018-02-02 19:09:40,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 19:09:40,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 19:09:40,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-02-02 19:09:40,802 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2018-02-02 19:09:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:40,881 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-02-02 19:09:40,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 19:09:40,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-02-02 19:09:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:40,882 INFO L225 Difference]: With dead ends: 58 [2018-02-02 19:09:40,883 INFO L226 Difference]: Without dead ends: 58 [2018-02-02 19:09:40,883 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-02-02 19:09:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-02 19:09:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2018-02-02 19:09:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-02-02 19:09:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2018-02-02 19:09:40,887 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 29 [2018-02-02 19:09:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:40,887 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2018-02-02 19:09:40,888 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 19:09:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2018-02-02 19:09:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 19:09:40,888 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:40,888 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:40,889 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:40,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2099880014, now seen corresponding path program 1 times [2018-02-02 19:09:40,889 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:40,889 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:40,890 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,890 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:40,890 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:40,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 19:09:40,934 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:40,934 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 19:09:40,942 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:40,956 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:40,958 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 [2018-02-02 19:09:40,958 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 19:09:40,959 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 19:09:40,959 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-02 19:09:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 19:09:40,989 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:40,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 6 [2018-02-02 19:09:40,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 19:09:40,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 19:09:40,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:09:40,990 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 7 states. [2018-02-02 19:09:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:41,040 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-02-02 19:09:41,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 19:09:41,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-02-02 19:09:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:41,041 INFO L225 Difference]: With dead ends: 54 [2018-02-02 19:09:41,041 INFO L226 Difference]: Without dead ends: 54 [2018-02-02 19:09:41,041 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-02-02 19:09:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-02 19:09:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-02-02 19:09:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-02 19:09:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-02-02 19:09:41,044 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 29 [2018-02-02 19:09:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:41,044 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-02-02 19:09:41,044 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 19:09:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-02-02 19:09:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 19:09:41,045 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:41,050 INFO L351 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] [2018-02-02 19:09:41,050 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:41,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1474818454, now seen corresponding path program 1 times [2018-02-02 19:09:41,050 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:41,050 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:41,051 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:41,051 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:41,051 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:41,057 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:09:41,128 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:41,128 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:41,133 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:41,148 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:09:41,182 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:41,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2018-02-02 19:09:41,182 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 19:09:41,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 19:09:41,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-02-02 19:09:41,183 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 10 states. [2018-02-02 19:09:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:41,328 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2018-02-02 19:09:41,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 19:09:41,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-02-02 19:09:41,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:41,329 INFO L225 Difference]: With dead ends: 86 [2018-02-02 19:09:41,329 INFO L226 Difference]: Without dead ends: 86 [2018-02-02 19:09:41,330 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-02-02 19:09:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-02-02 19:09:41,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 63. [2018-02-02 19:09:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-02-02 19:09:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2018-02-02 19:09:41,334 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 31 [2018-02-02 19:09:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:41,334 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2018-02-02 19:09:41,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 19:09:41,334 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2018-02-02 19:09:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-02 19:09:41,335 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:41,335 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:41,335 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:41,336 INFO L82 PathProgramCache]: Analyzing trace with hash -533212584, now seen corresponding path program 1 times [2018-02-02 19:09:41,336 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:41,336 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:41,336 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:41,337 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:41,337 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:41,345 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:09:41,384 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:41,384 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:41,389 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:41,403 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:09:41,466 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:41,466 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-02-02 19:09:41,466 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-02 19:09:41,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-02 19:09:41,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-02-02 19:09:41,467 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 11 states. [2018-02-02 19:09:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:41,592 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2018-02-02 19:09:41,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 19:09:41,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2018-02-02 19:09:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:41,593 INFO L225 Difference]: With dead ends: 95 [2018-02-02 19:09:41,594 INFO L226 Difference]: Without dead ends: 95 [2018-02-02 19:09:41,594 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-02-02 19:09:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-02-02 19:09:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2018-02-02 19:09:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-02-02 19:09:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-02-02 19:09:41,599 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 34 [2018-02-02 19:09:41,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:41,599 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-02-02 19:09:41,599 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-02 19:09:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-02-02 19:09:41,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-02-02 19:09:41,600 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:41,601 INFO L351 BasicCegarLoop]: trace histogram [3, 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] [2018-02-02 19:09:41,601 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:41,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2137316393, now seen corresponding path program 2 times [2018-02-02 19:09:41,601 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:41,601 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:41,602 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:41,602 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:41,602 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:41,611 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-02-02 19:09:41,638 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:41,638 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:41,643 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:09:41,651 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-02-02 19:09:41,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:41,653 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:41,683 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 19:09:41,685 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-02-02 19:09:41,685 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 19:09:41,686 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 19:09:41,686 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-02 19:09:41,701 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 19:09:41,701 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-02-02 19:09:41,701 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 19:09:41,702 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 19:09:41,703 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-02 19:09:41,742 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#mask~0.base| Int)) (and (= (store |c_old(#valid)| |main_~#mask~0.base| 0) |c_#valid|) (= (select |c_old(#valid)| |main_~#mask~0.base|) 0))) is different from true [2018-02-02 19:09:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-02-02 19:09:41,766 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 19:09:41,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-02-02 19:09:41,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 19:09:41,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 19:09:41,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2018-02-02 19:09:41,767 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 9 states. [2018-02-02 19:09:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:41,917 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2018-02-02 19:09:41,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 19:09:41,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-02-02 19:09:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:41,918 INFO L225 Difference]: With dead ends: 105 [2018-02-02 19:09:41,918 INFO L226 Difference]: Without dead ends: 64 [2018-02-02 19:09:41,918 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=175, Unknown=1, NotChecked=28, Total=272 [2018-02-02 19:09:41,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-02 19:09:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2018-02-02 19:09:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 19:09:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-02-02 19:09:41,923 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 43 [2018-02-02 19:09:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:41,924 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-02-02 19:09:41,924 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 19:09:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-02-02 19:09:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-02-02 19:09:41,925 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:41,925 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:41,925 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:41,925 INFO L82 PathProgramCache]: Analyzing trace with hash 763161719, now seen corresponding path program 2 times [2018-02-02 19:09:41,925 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:41,926 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:41,926 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:41,926 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:41,926 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:41,935 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-02 19:09:41,969 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:09:41,969 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 19:09:41,969 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 19:09:41,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 19:09:41,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:09:41,969 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2018-02-02 19:09:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:41,997 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-02-02 19:09:41,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 19:09:41,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2018-02-02 19:09:41,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:41,998 INFO L225 Difference]: With dead ends: 65 [2018-02-02 19:09:41,998 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 19:09:41,998 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-02-02 19:09:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 19:09:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2018-02-02 19:09:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 19:09:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2018-02-02 19:09:42,001 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 46 [2018-02-02 19:09:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:42,001 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2018-02-02 19:09:42,001 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 19:09:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2018-02-02 19:09:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-02-02 19:09:42,002 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:42,002 INFO L351 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:42,002 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:42,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1798255855, now seen corresponding path program 3 times [2018-02-02 19:09:42,002 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:42,002 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:42,002 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:42,002 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:42,003 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:42,010 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-02-02 19:09:42,095 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:42,095 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:42,100 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 19:09:42,113 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-02-02 19:09:42,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:42,115 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-02-02 19:09:42,163 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:42,163 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2018-02-02 19:09:42,163 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 19:09:42,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 19:09:42,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-02 19:09:42,164 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 10 states. [2018-02-02 19:09:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:42,258 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2018-02-02 19:09:42,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 19:09:42,259 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2018-02-02 19:09:42,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:42,259 INFO L225 Difference]: With dead ends: 72 [2018-02-02 19:09:42,259 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 19:09:42,260 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-02-02 19:09:42,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 19:09:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 19:09:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 19:09:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 19:09:42,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-02-02 19:09:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:42,260 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 19:09:42,261 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 19:09:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 19:09:42,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 19:09:42,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 07:09:42 BoogieIcfgContainer [2018-02-02 19:09:42,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 19:09:42,268 INFO L168 Benchmark]: Toolchain (without parser) took 2823.60 ms. Allocated memory was 401.6 MB in the beginning and 654.3 MB in the end (delta: 252.7 MB). Free memory was 356.9 MB in the beginning and 580.0 MB in the end (delta: -223.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:42,269 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 401.6 MB. Free memory is still 362.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 19:09:42,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 131.37 ms. Allocated memory is still 401.6 MB. Free memory was 356.9 MB in the beginning and 349.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:42,269 INFO L168 Benchmark]: Boogie Preprocessor took 19.66 ms. Allocated memory is still 401.6 MB. Free memory was 349.0 MB in the beginning and 346.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:42,269 INFO L168 Benchmark]: RCFGBuilder took 158.25 ms. Allocated memory is still 401.6 MB. Free memory was 346.3 MB in the beginning and 328.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:42,270 INFO L168 Benchmark]: TraceAbstraction took 2511.25 ms. Allocated memory was 401.6 MB in the beginning and 654.3 MB in the end (delta: 252.7 MB). Free memory was 328.8 MB in the beginning and 580.0 MB in the end (delta: -251.2 MB). Peak memory consumption was 1.5 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:42,273 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 401.6 MB. Free memory is still 362.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 131.37 ms. Allocated memory is still 401.6 MB. Free memory was 356.9 MB in the beginning and 349.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.66 ms. Allocated memory is still 401.6 MB. Free memory was 349.0 MB in the beginning and 346.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 158.25 ms. Allocated memory is still 401.6 MB. Free memory was 346.3 MB in the beginning and 328.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2511.25 ms. Allocated memory was 401.6 MB in the beginning and 654.3 MB in the end (delta: 252.7 MB). Free memory was 328.8 MB in the beginning and 580.0 MB in the end (delta: -251.2 MB). Peak memory consumption was 1.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds 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: 27]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 30]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 6 error locations. SAFE Result, 2.4s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 339 SDtfs, 557 SDslu, 863 SDs, 0 SdLazy, 887 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 210 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=8, 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, 11 MinimizatonAttempts, 94 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 560 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 543 ConstructedInterpolants, 26 QuantifiedInterpolants, 59275 SizeOfPredicates, 11 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 187/223 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_19-09-42-279.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_19-09-42-279.csv Received shutdown request...