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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 09:17:54,830 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 09:17:54,832 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 09:17:54,845 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 09:17:54,845 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 09:17:54,846 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 09:17:54,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 09:17:54,849 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 09:17:54,851 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 09:17:54,851 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 09:17:54,852 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 09:17:54,853 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 09:17:54,853 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 09:17:54,855 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 09:17:54,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 09:17:54,858 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 09:17:54,860 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 09:17:54,862 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 09:17:54,863 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 09:17:54,864 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 09:17:54,866 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 09:17:54,871 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 09:17:54,871 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 09:17:54,871 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 09:17:54,882 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 09:17:54,882 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 09:17:54,883 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 09:17:54,883 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 09:17:54,883 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 09:17:54,884 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 09:17:54,884 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 09:17:54,884 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 09:17:54,884 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 09:17:54,884 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 09:17:54,885 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 09:17:54,885 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 09:17:54,885 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 09:17:54,885 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 09:17:54,885 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 09:17:54,885 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 09:17:54,886 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 09:17:54,886 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 09:17:54,886 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 09:17:54,886 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 09:17:54,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:17:54,887 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 09:17:54,887 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 09:17:54,887 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 09:17:54,887 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 09:17:54,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 09:17:54,926 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 09:17:54,929 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 09:17:54,930 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 09:17:54,930 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 09:17:54,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-02-02 09:17:55,051 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 09:17:55,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 09:17:55,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 09:17:55,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 09:17:55,059 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 09:17:55,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313f089e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55, skipping insertion in model container [2018-02-02 09:17:55,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,078 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:17:55,093 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:17:55,185 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:17:55,198 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:17:55,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55 WrapperNode [2018-02-02 09:17:55,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 09:17:55,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 09:17:55,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 09:17:55,205 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 09:17:55,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (1/1) ... [2018-02-02 09:17:55,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 09:17:55,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 09:17:55,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 09:17:55,232 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 09:17:55,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (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 09:17:55,269 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 09:17:55,270 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 09:17:55,270 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-02 09:17:55,270 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 09:17:55,270 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 09:17:55,270 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 09:17:55,270 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 09:17:55,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 09:17:55,271 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 09:17:55,271 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-02 09:17:55,271 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 09:17:55,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 09:17:55,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 09:17:55,399 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 09:17:55,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:55 BoogieIcfgContainer [2018-02-02 09:17:55,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 09:17:55,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 09:17:55,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 09:17:55,403 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 09:17:55,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:17:55" (1/3) ... [2018-02-02 09:17:55,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13767485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:55, skipping insertion in model container [2018-02-02 09:17:55,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:55" (2/3) ... [2018-02-02 09:17:55,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13767485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:55, skipping insertion in model container [2018-02-02 09:17:55,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:55" (3/3) ... [2018-02-02 09:17:55,406 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-02-02 09:17:55,413 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 09:17:55,418 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-02-02 09:17:55,449 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 09:17:55,449 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 09:17:55,449 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 09:17:55,449 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 09:17:55,450 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 09:17:55,450 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 09:17:55,450 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 09:17:55,450 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 09:17:55,450 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 09:17:55,459 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-02-02 09:17:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-02 09:17:55,465 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:55,466 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:55,466 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-02-02 09:17:55,473 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:55,473 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:55,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:55,523 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:55,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:55,569 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:55,634 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 09:17:55,635 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:17:55,635 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:17:55,636 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:17:55,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:17:55,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:17:55,647 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-02-02 09:17:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:55,701 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-02-02 09:17:55,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:17:55,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-02-02 09:17:55,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:55,709 INFO L225 Difference]: With dead ends: 63 [2018-02-02 09:17:55,709 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 09:17:55,710 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 09:17:55,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 09:17:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-02-02 09:17:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 09:17:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-02-02 09:17:55,790 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-02-02 09:17:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:55,791 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-02-02 09:17:55,791 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:17:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-02-02 09:17:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-02 09:17:55,791 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:55,791 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:55,791 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-02-02 09:17:55,792 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:55,792 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:55,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:55,792 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:55,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:55,806 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:55,836 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 09:17:55,836 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:17:55,836 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:17:55,837 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:17:55,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:17:55,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:17:55,838 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 3 states. [2018-02-02 09:17:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:55,857 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-02-02 09:17:55,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:17:55,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-02-02 09:17:55,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:55,860 INFO L225 Difference]: With dead ends: 60 [2018-02-02 09:17:55,860 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 09:17:55,861 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 09:17:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 09:17:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2018-02-02 09:17:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 09:17:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-02-02 09:17:55,864 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 16 [2018-02-02 09:17:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:55,865 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-02-02 09:17:55,865 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:17:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-02-02 09:17:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 09:17:55,865 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:55,865 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:55,865 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:55,865 INFO L82 PathProgramCache]: Analyzing trace with hash -258746290, now seen corresponding path program 1 times [2018-02-02 09:17:55,865 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:55,866 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:55,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:55,866 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:55,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:55,876 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:56,005 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 09:17:56,005 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:17:56,005 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:17:56,005 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:17:56,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:17:56,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:17:56,006 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2018-02-02 09:17:56,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:56,097 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-02-02 09:17:56,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:17:56,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-02-02 09:17:56,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:56,099 INFO L225 Difference]: With dead ends: 54 [2018-02-02 09:17:56,099 INFO L226 Difference]: Without dead ends: 54 [2018-02-02 09:17:56,100 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:17:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-02 09:17:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-02-02 09:17:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-02-02 09:17:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-02-02 09:17:56,105 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 17 [2018-02-02 09:17:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:56,105 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-02-02 09:17:56,106 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:17:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-02-02 09:17:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 09:17:56,106 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:56,106 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:56,107 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash -258746291, now seen corresponding path program 1 times [2018-02-02 09:17:56,107 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:56,107 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:56,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,108 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:56,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:56,117 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:56,148 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 09:17:56,149 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:17:56,149 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:17:56,149 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:17:56,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:17:56,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:17:56,150 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2018-02-02 09:17:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:56,190 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-02-02 09:17:56,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:17:56,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-02-02 09:17:56,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:56,192 INFO L225 Difference]: With dead ends: 50 [2018-02-02 09:17:56,192 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 09:17:56,192 INFO L554 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 [2018-02-02 09:17:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 09:17:56,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-02-02 09:17:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 09:17:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-02-02 09:17:56,197 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2018-02-02 09:17:56,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:56,197 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-02-02 09:17:56,197 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:17:56,197 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-02-02 09:17:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 09:17:56,198 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:56,198 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] [2018-02-02 09:17:56,198 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:56,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1933852231, now seen corresponding path program 1 times [2018-02-02 09:17:56,199 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:56,199 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:56,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,200 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:56,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:56,210 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:56,265 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 09:17:56,265 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:17:56,265 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 09:17:56,265 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 09:17:56,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 09:17:56,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:17:56,266 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2018-02-02 09:17:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:56,347 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2018-02-02 09:17:56,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:17:56,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-02-02 09:17:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:56,349 INFO L225 Difference]: With dead ends: 72 [2018-02-02 09:17:56,349 INFO L226 Difference]: Without dead ends: 72 [2018-02-02 09:17:56,349 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:17:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-02-02 09:17:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2018-02-02 09:17:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-02-02 09:17:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2018-02-02 09:17:56,353 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 22 [2018-02-02 09:17:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:56,353 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2018-02-02 09:17:56,353 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 09:17:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2018-02-02 09:17:56,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 09:17:56,354 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:56,354 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 09:17:56,354 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:56,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1974903447, now seen corresponding path program 1 times [2018-02-02 09:17:56,354 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:56,354 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:56,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,355 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:56,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:56,361 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:56,395 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 09:17:56,396 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:17:56,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:17:56,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:17:56,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:17:56,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:17:56,397 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 5 states. [2018-02-02 09:17:56,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:56,439 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2018-02-02 09:17:56,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:17:56,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-02-02 09:17:56,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:56,440 INFO L225 Difference]: With dead ends: 72 [2018-02-02 09:17:56,440 INFO L226 Difference]: Without dead ends: 72 [2018-02-02 09:17:56,441 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 09:17:56,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-02-02 09:17:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2018-02-02 09:17:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 09:17:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-02-02 09:17:56,445 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 23 [2018-02-02 09:17:56,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:56,445 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-02-02 09:17:56,445 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:17:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-02-02 09:17:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 09:17:56,446 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:56,446 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 09:17:56,446 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:56,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1474818454, now seen corresponding path program 1 times [2018-02-02 09:17:56,446 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:56,447 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:56,447 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,447 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:56,448 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:56,455 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:56,506 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 09:17:56,507 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:56,507 INFO L209 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 09:17:56,513 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:56,537 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:17:56,614 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:17:56,614 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2018-02-02 09:17:56,614 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-02 09:17:56,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-02 09:17:56,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-02-02 09:17:56,615 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 11 states. [2018-02-02 09:17:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:56,799 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2018-02-02 09:17:56,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:17:56,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-02-02 09:17:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:56,800 INFO L225 Difference]: With dead ends: 79 [2018-02-02 09:17:56,800 INFO L226 Difference]: Without dead ends: 73 [2018-02-02 09:17:56,800 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-02-02 09:17:56,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-02-02 09:17:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2018-02-02 09:17:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 09:17:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2018-02-02 09:17:56,803 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 31 [2018-02-02 09:17:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:56,803 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2018-02-02 09:17:56,804 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-02 09:17:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2018-02-02 09:17:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-02-02 09:17:56,804 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:56,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:56,805 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:56,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1643098334, now seen corresponding path program 1 times [2018-02-02 09:17:56,805 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:56,807 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:56,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,808 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:56,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:56,818 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 09:17:56,845 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:56,845 INFO L209 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 09:17:56,850 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:56,873 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 09:17:56,899 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:56,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-02-02 09:17:56,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:17:56,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:17:56,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:17:56,900 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 5 states. [2018-02-02 09:17:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:56,924 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2018-02-02 09:17:56,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 09:17:56,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-02-02 09:17:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:56,926 INFO L225 Difference]: With dead ends: 86 [2018-02-02 09:17:56,926 INFO L226 Difference]: Without dead ends: 86 [2018-02-02 09:17:56,926 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 09:17:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-02-02 09:17:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2018-02-02 09:17:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-02-02 09:17:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2018-02-02 09:17:56,931 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 37 [2018-02-02 09:17:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:56,931 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2018-02-02 09:17:56,931 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:17:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2018-02-02 09:17:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-02-02 09:17:56,932 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:56,932 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:17:56,932 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:56,932 INFO L82 PathProgramCache]: Analyzing trace with hash 465858064, now seen corresponding path program 1 times [2018-02-02 09:17:56,932 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:56,933 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:56,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,933 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:56,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:56,943 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-02 09:17:57,005 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:57,006 INFO L209 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 09:17:57,013 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:57,030 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-02-02 09:17:57,097 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:17:57,097 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2018-02-02 09:17:57,098 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 09:17:57,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 09:17:57,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:17:57,099 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 10 states. [2018-02-02 09:17:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:57,252 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2018-02-02 09:17:57,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 09:17:57,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-02-02 09:17:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:57,253 INFO L225 Difference]: With dead ends: 87 [2018-02-02 09:17:57,253 INFO L226 Difference]: Without dead ends: 87 [2018-02-02 09:17:57,253 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 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 09:17:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-02-02 09:17:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 67. [2018-02-02 09:17:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-02-02 09:17:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-02-02 09:17:57,258 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 40 [2018-02-02 09:17:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:57,258 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-02-02 09:17:57,258 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 09:17:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-02-02 09:17:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-02-02 09:17:57,259 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:17:57,259 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 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] [2018-02-02 09:17:57,259 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 09:17:57,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1953764441, now seen corresponding path program 2 times [2018-02-02 09:17:57,260 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:17:57,260 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:17:57,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:57,261 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:17:57,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:17:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:17:57,273 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:17:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-02-02 09:17:57,315 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:17:57,315 INFO L209 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 09:17:57,321 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:17:57,330 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:17:57,331 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:17:57,333 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:17:57,372 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 09:17:57,377 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 09:17:57,378 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 09:17:57,380 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 09:17:57,381 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-02 09:17:57,420 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 09:17:57,421 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 09:17:57,421 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 09:17:57,427 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 09:17:57,428 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-02 09:17:57,455 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 09:17:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-02-02 09:17:57,480 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:17:57,480 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-02-02 09:17:57,480 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 09:17:57,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 09:17:57,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2018-02-02 09:17:57,481 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 9 states. [2018-02-02 09:17:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:17:57,649 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-02-02 09:17:57,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 09:17:57,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2018-02-02 09:17:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:17:57,650 INFO L225 Difference]: With dead ends: 97 [2018-02-02 09:17:57,650 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 09:17:57,650 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 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 09:17:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 09:17:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 09:17:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 09:17:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 09:17:57,651 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2018-02-02 09:17:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:17:57,651 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 09:17:57,651 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 09:17:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 09:17:57,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 09:17:57,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:17:57 BoogieIcfgContainer [2018-02-02 09:17:57,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 09:17:57,656 INFO L168 Benchmark]: Toolchain (without parser) took 2605.35 ms. Allocated memory was 405.3 MB in the beginning and 630.2 MB in the end (delta: 224.9 MB). Free memory was 363.3 MB in the beginning and 455.0 MB in the end (delta: -91.7 MB). Peak memory consumption was 133.2 MB. Max. memory is 5.3 GB. [2018-02-02 09:17:57,658 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 405.3 MB. Free memory is still 368.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:17:57,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.76 ms. Allocated memory is still 405.3 MB. Free memory was 363.3 MB in the beginning and 355.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-02 09:17:57,658 INFO L168 Benchmark]: Boogie Preprocessor took 26.38 ms. Allocated memory is still 405.3 MB. Free memory was 355.4 MB in the beginning and 352.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 09:17:57,658 INFO L168 Benchmark]: RCFGBuilder took 168.18 ms. Allocated memory is still 405.3 MB. Free memory was 352.7 MB in the beginning and 335.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 5.3 GB. [2018-02-02 09:17:57,658 INFO L168 Benchmark]: TraceAbstraction took 2255.72 ms. Allocated memory was 405.3 MB in the beginning and 630.2 MB in the end (delta: 224.9 MB). Free memory was 335.3 MB in the beginning and 455.0 MB in the end (delta: -119.7 MB). Peak memory consumption was 105.2 MB. Max. memory is 5.3 GB. [2018-02-02 09:17:57,659 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 405.3 MB. Free memory is still 368.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 151.76 ms. Allocated memory is still 405.3 MB. Free memory was 363.3 MB in the beginning and 355.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.38 ms. Allocated memory is still 405.3 MB. Free memory was 355.4 MB in the beginning and 352.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 168.18 ms. Allocated memory is still 405.3 MB. Free memory was 352.7 MB in the beginning and 335.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2255.72 ms. Allocated memory was 405.3 MB in the beginning and 630.2 MB in the end (delta: 224.9 MB). Free memory was 335.3 MB in the beginning and 455.0 MB in the end (delta: -119.7 MB). Peak memory consumption was 105.2 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: 18]: 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: 23]: 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, 2.2s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 333 SDtfs, 472 SDslu, 746 SDs, 0 SdLazy, 694 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 161 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 432 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 418 ConstructedInterpolants, 26 QuantifiedInterpolants, 47450 SizeOfPredicates, 5 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 104/124 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/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-17-57-665.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_09-17-57-665.csv Received shutdown request...