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-ccafca9-m [2018-02-04 00:20:59,823 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 00:20:59,825 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 00:20:59,838 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 00:20:59,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 00:20:59,838 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 00:20:59,839 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 00:20:59,841 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 00:20:59,842 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 00:20:59,843 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 00:20:59,844 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 00:20:59,844 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 00:20:59,845 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 00:20:59,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 00:20:59,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 00:20:59,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 00:20:59,850 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 00:20:59,851 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 00:20:59,852 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 00:20:59,853 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 00:20:59,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 00:20:59,860 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 [2018-02-04 00:20:59,869 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 00:20:59,870 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 00:20:59,870 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 00:20:59,871 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 00:20:59,871 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 00:20:59,871 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 00:20:59,871 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 00:20:59,871 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 00:20:59,871 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 00:20:59,871 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 00:20:59,871 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 00:20:59,871 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 00:20:59,872 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 00:20:59,872 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 00:20:59,872 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 00:20:59,872 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 00:20:59,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 00:20:59,872 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 00:20:59,872 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 00:20:59,872 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 00:20:59,872 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 00:20:59,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 00:20:59,873 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 00:20:59,873 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 00:20:59,873 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-04 00:20:59,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 00:20:59,915 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 00:20:59,918 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 00:20:59,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 00:20:59,919 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 00:20:59,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c [2018-02-04 00:21:00,013 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 00:21:00,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 00:21:00,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 00:21:00,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 00:21:00,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 00:21:00,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73998beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00, skipping insertion in model container [2018-02-04 00:21:00,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,031 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 00:21:00,041 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 00:21:00,130 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 00:21:00,141 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 00:21:00,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00 WrapperNode [2018-02-04 00:21:00,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 00:21:00,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 00:21:00,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 00:21:00,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 00:21:00,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (1/1) ... [2018-02-04 00:21:00,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 00:21:00,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 00:21:00,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 00:21:00,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 00:21:00,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (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 [2018-02-04 00:21:00,208 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 00:21:00,208 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 00:21:00,208 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-04 00:21:00,208 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 00:21:00,209 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 00:21:00,335 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 00:21:00,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:21:00 BoogieIcfgContainer [2018-02-04 00:21:00,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 00:21:00,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 00:21:00,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 00:21:00,338 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 00:21:00,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 12:21:00" (1/3) ... [2018-02-04 00:21:00,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9b7b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:21:00, skipping insertion in model container [2018-02-04 00:21:00,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:00" (2/3) ... [2018-02-04 00:21:00,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9b7b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:21:00, skipping insertion in model container [2018-02-04 00:21:00,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:21:00" (3/3) ... [2018-02-04 00:21:00,341 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5_true-valid-memsafety.c [2018-02-04 00:21:00,348 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 00:21:00,354 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-02-04 00:21:00,386 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 00:21:00,386 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 00:21:00,386 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 00:21:00,386 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 00:21:00,386 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 00:21:00,386 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 00:21:00,387 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 00:21:00,387 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 00:21:00,387 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 00:21:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-02-04 00:21:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-04 00:21:00,406 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:00,407 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:00,407 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-02-04 00:21:00,413 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:00,413 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:00,456 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:00,456 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:00,456 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:00,503 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:00,556 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:00,556 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 00:21:00,557 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 00:21:00,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 00:21:00,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 00:21:00,568 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-02-04 00:21:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:00,628 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-02-04 00:21:00,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 00:21:00,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-02-04 00:21:00,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:00,637 INFO L225 Difference]: With dead ends: 63 [2018-02-04 00:21:00,638 INFO L226 Difference]: Without dead ends: 59 [2018-02-04 00:21:00,640 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 [2018-02-04 00:21:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-04 00:21:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-02-04 00:21:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-04 00:21:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-02-04 00:21:00,708 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-02-04 00:21:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:00,708 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-02-04 00:21:00,709 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 00:21:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-02-04 00:21:00,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-04 00:21:00,709 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:00,709 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:00,709 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:00,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-02-04 00:21:00,710 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:00,710 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:00,711 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:00,711 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:00,711 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:00,725 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:00,780 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:00,780 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 00:21:00,781 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 00:21:00,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 00:21:00,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 00:21:00,781 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 5 states. [2018-02-04 00:21:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:00,871 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-02-04 00:21:00,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 00:21:00,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-02-04 00:21:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:00,872 INFO L225 Difference]: With dead ends: 65 [2018-02-04 00:21:00,873 INFO L226 Difference]: Without dead ends: 65 [2018-02-04 00:21:00,873 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 [2018-02-04 00:21:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-04 00:21:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2018-02-04 00:21:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-04 00:21:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-02-04 00:21:00,879 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 16 [2018-02-04 00:21:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:00,879 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-02-04 00:21:00,879 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 00:21:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-02-04 00:21:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 00:21:00,880 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:00,880 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] [2018-02-04 00:21:00,880 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1974903447, now seen corresponding path program 1 times [2018-02-04 00:21:00,881 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:00,881 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:00,881 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:00,881 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:00,881 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:00,894 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:00,926 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:00,926 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 00:21:00,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 00:21:00,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 00:21:00,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-04 00:21:00,927 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2018-02-04 00:21:00,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:00,987 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-02-04 00:21:00,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 00:21:00,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-02-04 00:21:00,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:00,988 INFO L225 Difference]: With dead ends: 65 [2018-02-04 00:21:00,988 INFO L226 Difference]: Without dead ends: 65 [2018-02-04 00:21:00,989 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 [2018-02-04 00:21:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-04 00:21:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2018-02-04 00:21:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-02-04 00:21:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-02-04 00:21:00,993 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 23 [2018-02-04 00:21:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:00,993 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-02-04 00:21:00,993 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 00:21:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-02-04 00:21:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-04 00:21:00,994 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:00,994 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] [2018-02-04 00:21:00,994 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:00,994 INFO L82 PathProgramCache]: Analyzing trace with hash 621927392, now seen corresponding path program 1 times [2018-02-04 00:21:00,995 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:00,995 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:00,995 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:00,996 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:00,996 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,008 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-02-04 00:21:01,031 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:01,031 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 00:21:01,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 00:21:01,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 00:21:01,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 00:21:01,032 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 3 states. [2018-02-04 00:21:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:01,056 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2018-02-04 00:21:01,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 00:21:01,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-02-04 00:21:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:01,059 INFO L225 Difference]: With dead ends: 64 [2018-02-04 00:21:01,059 INFO L226 Difference]: Without dead ends: 64 [2018-02-04 00:21:01,060 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 [2018-02-04 00:21:01,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-04 00:21:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2018-02-04 00:21:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-04 00:21:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-02-04 00:21:01,064 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 28 [2018-02-04 00:21:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:01,064 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-02-04 00:21:01,064 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 00:21:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-02-04 00:21:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-04 00:21:01,065 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:01,065 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] [2018-02-04 00:21:01,065 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:01,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2099880015, now seen corresponding path program 1 times [2018-02-04 00:21:01,066 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:01,066 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:01,067 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,067 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:01,067 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,079 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 00:21:01,198 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:01,199 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 [2018-02-04 00:21:01,211 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,233 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:01,262 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 [2018-02-04 00:21:01,263 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 00:21:01,266 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 00:21:01,266 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-04 00:21:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 00:21:01,329 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 00:21:01,329 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2018-02-04 00:21:01,330 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 00:21:01,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 00:21:01,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-02-04 00:21:01,330 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2018-02-04 00:21:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:01,443 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-02-04 00:21:01,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 00:21:01,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-02-04 00:21:01,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:01,444 INFO L225 Difference]: With dead ends: 58 [2018-02-04 00:21:01,444 INFO L226 Difference]: Without dead ends: 58 [2018-02-04 00:21:01,444 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 [2018-02-04 00:21:01,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-04 00:21:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2018-02-04 00:21:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-02-04 00:21:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2018-02-04 00:21:01,448 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 29 [2018-02-04 00:21:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:01,448 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2018-02-04 00:21:01,448 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 00:21:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2018-02-04 00:21:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-04 00:21:01,449 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:01,449 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] [2018-02-04 00:21:01,449 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:01,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2099880014, now seen corresponding path program 1 times [2018-02-04 00:21:01,450 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:01,450 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:01,450 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,451 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:01,451 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,459 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 00:21:01,496 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:01,496 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 [2018-02-04 00:21:01,503 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,516 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:01,518 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 [2018-02-04 00:21:01,518 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 00:21:01,519 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 00:21:01,519 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 00:21:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 00:21:01,555 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 00:21:01,555 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 6 [2018-02-04 00:21:01,555 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 00:21:01,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 00:21:01,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-04 00:21:01,556 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 7 states. [2018-02-04 00:21:01,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:01,592 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-02-04 00:21:01,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 00:21:01,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-02-04 00:21:01,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:01,592 INFO L225 Difference]: With dead ends: 54 [2018-02-04 00:21:01,592 INFO L226 Difference]: Without dead ends: 54 [2018-02-04 00:21:01,593 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 [2018-02-04 00:21:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-04 00:21:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-02-04 00:21:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-04 00:21:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-02-04 00:21:01,599 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 29 [2018-02-04 00:21:01,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:01,599 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-02-04 00:21:01,599 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 00:21:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-02-04 00:21:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-04 00:21:01,599 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:01,600 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] [2018-02-04 00:21:01,600 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:01,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1474818454, now seen corresponding path program 1 times [2018-02-04 00:21:01,600 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:01,600 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:01,600 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,601 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:01,601 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,605 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:01,656 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:01,656 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 [2018-02-04 00:21:01,663 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,683 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:01,735 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 00:21:01,735 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2018-02-04 00:21:01,735 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-04 00:21:01,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-04 00:21:01,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-02-04 00:21:01,736 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 10 states. [2018-02-04 00:21:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:01,886 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2018-02-04 00:21:01,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 00:21:01,887 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-02-04 00:21:01,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:01,887 INFO L225 Difference]: With dead ends: 86 [2018-02-04 00:21:01,887 INFO L226 Difference]: Without dead ends: 86 [2018-02-04 00:21:01,888 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-02-04 00:21:01,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-02-04 00:21:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 63. [2018-02-04 00:21:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-02-04 00:21:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2018-02-04 00:21:01,890 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 31 [2018-02-04 00:21:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:01,890 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2018-02-04 00:21:01,890 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-04 00:21:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2018-02-04 00:21:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-04 00:21:01,891 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:01,891 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] [2018-02-04 00:21:01,891 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:01,891 INFO L82 PathProgramCache]: Analyzing trace with hash -533212584, now seen corresponding path program 1 times [2018-02-04 00:21:01,891 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:01,892 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:01,892 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,892 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:01,892 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,901 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:01,937 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:01,937 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 [2018-02-04 00:21:01,944 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:01,981 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:02,140 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 00:21:02,140 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-02-04 00:21:02,141 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-04 00:21:02,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-04 00:21:02,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-02-04 00:21:02,141 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 11 states. [2018-02-04 00:21:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:02,284 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2018-02-04 00:21:02,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 00:21:02,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2018-02-04 00:21:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:02,285 INFO L225 Difference]: With dead ends: 95 [2018-02-04 00:21:02,285 INFO L226 Difference]: Without dead ends: 95 [2018-02-04 00:21:02,285 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-02-04 00:21:02,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-02-04 00:21:02,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2018-02-04 00:21:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-02-04 00:21:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-02-04 00:21:02,290 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 34 [2018-02-04 00:21:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:02,290 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-02-04 00:21:02,290 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-04 00:21:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-02-04 00:21:02,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-02-04 00:21:02,291 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:02,291 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] [2018-02-04 00:21:02,291 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:02,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2137316393, now seen corresponding path program 2 times [2018-02-04 00:21:02,292 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:02,292 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:02,293 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:02,293 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:02,293 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:02,300 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-02-04 00:21:02,340 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:02,341 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 [2018-02-04 00:21:02,345 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 00:21:02,354 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-02-04 00:21:02,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 00:21:02,357 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:02,370 INFO L700 Elim1Store]: detected not equals via solver [2018-02-04 00:21:02,372 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 [2018-02-04 00:21:02,372 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 00:21:02,374 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. [2018-02-04 00:21:02,374 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-04 00:21:02,403 INFO L700 Elim1Store]: detected not equals via solver [2018-02-04 00:21:02,403 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 [2018-02-04 00:21:02,404 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 00:21:02,405 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. [2018-02-04 00:21:02,406 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-04 00:21:02,427 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 [2018-02-04 00:21:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-02-04 00:21:02,449 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 00:21:02,449 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-02-04 00:21:02,449 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 00:21:02,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 00:21:02,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2018-02-04 00:21:02,450 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 9 states. [2018-02-04 00:21:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:02,656 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2018-02-04 00:21:02,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 00:21:02,656 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-02-04 00:21:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:02,657 INFO L225 Difference]: With dead ends: 105 [2018-02-04 00:21:02,657 INFO L226 Difference]: Without dead ends: 64 [2018-02-04 00:21:02,657 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 [2018-02-04 00:21:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-04 00:21:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2018-02-04 00:21:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-04 00:21:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-02-04 00:21:02,661 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 43 [2018-02-04 00:21:02,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:02,661 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-02-04 00:21:02,661 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 00:21:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-02-04 00:21:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-02-04 00:21:02,662 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:02,662 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] [2018-02-04 00:21:02,662 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:02,663 INFO L82 PathProgramCache]: Analyzing trace with hash 763161719, now seen corresponding path program 2 times [2018-02-04 00:21:02,663 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:02,663 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:02,663 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:02,663 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 00:21:02,664 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:02,672 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-04 00:21:02,716 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:02,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 00:21:02,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 00:21:02,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 00:21:02,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-04 00:21:02,717 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2018-02-04 00:21:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:02,748 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-02-04 00:21:02,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 00:21:02,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2018-02-04 00:21:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:02,748 INFO L225 Difference]: With dead ends: 65 [2018-02-04 00:21:02,749 INFO L226 Difference]: Without dead ends: 59 [2018-02-04 00:21:02,749 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 [2018-02-04 00:21:02,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-04 00:21:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2018-02-04 00:21:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-04 00:21:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2018-02-04 00:21:02,751 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 46 [2018-02-04 00:21:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:02,751 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2018-02-04 00:21:02,751 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 00:21:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2018-02-04 00:21:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-02-04 00:21:02,752 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:02,752 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] [2018-02-04 00:21:02,752 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-04 00:21:02,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1798255855, now seen corresponding path program 3 times [2018-02-04 00:21:02,752 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:02,752 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:02,753 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:02,753 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 00:21:02,753 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:02,762 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-02-04 00:21:02,827 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:02,827 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 [2018-02-04 00:21:02,835 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 00:21:02,851 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-02-04 00:21:02,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 00:21:02,853 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-02-04 00:21:02,901 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 00:21:02,902 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2018-02-04 00:21:02,902 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-04 00:21:02,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-04 00:21:02,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-04 00:21:02,906 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 10 states. [2018-02-04 00:21:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:03,026 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2018-02-04 00:21:03,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 00:21:03,027 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2018-02-04 00:21:03,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:03,027 INFO L225 Difference]: With dead ends: 72 [2018-02-04 00:21:03,027 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 00:21:03,028 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-02-04 00:21:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 00:21:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 00:21:03,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 00:21:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 00:21:03,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-02-04 00:21:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:03,029 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 00:21:03,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-04 00:21:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 00:21:03,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 00:21:03,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 12:21:03 BoogieIcfgContainer [2018-02-04 00:21:03,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 00:21:03,037 INFO L168 Benchmark]: Toolchain (without parser) took 3023.76 ms. Allocated memory was 401.6 MB in the beginning and 667.4 MB in the end (delta: 265.8 MB). Free memory was 356.9 MB in the beginning and 598.3 MB in the end (delta: -241.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 5.3 GB. [2018-02-04 00:21:03,038 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-02-04 00:21:03,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.67 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. [2018-02-04 00:21:03,039 INFO L168 Benchmark]: Boogie Preprocessor took 23.49 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. [2018-02-04 00:21:03,039 INFO L168 Benchmark]: RCFGBuilder took 164.85 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. [2018-02-04 00:21:03,039 INFO L168 Benchmark]: TraceAbstraction took 2700.33 ms. Allocated memory was 401.6 MB in the beginning and 667.4 MB in the end (delta: 265.8 MB). Free memory was 328.8 MB in the beginning and 598.3 MB in the end (delta: -269.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 00:21:03,040 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 132.67 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 23.49 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 164.85 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 2700.33 ms. Allocated memory was 401.6 MB in the beginning and 667.4 MB in the end (delta: 265.8 MB). Free memory was 328.8 MB in the beginning and 598.3 MB in the end (delta: -269.5 MB). There was no memory consumed. 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, 2.6s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 339 SDtfs, 557 SDslu, 863 SDs, 0 SdLazy, 887 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s 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-0-2018-02-04_00-21-03-047.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-0-2018-02-04_00-21-03-047.csv Received shutdown request...