java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 21:47:27,864 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 21:47:27,866 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 21:47:27,881 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 21:47:27,882 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 21:47:27,883 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 21:47:27,884 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 21:47:27,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 21:47:27,889 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 21:47:27,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 21:47:27,893 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 21:47:27,894 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 21:47:27,895 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 21:47:27,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 21:47:27,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 21:47:27,900 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 21:47:27,901 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 21:47:27,902 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 21:47:27,915 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 21:47:27,916 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 21:47:27,917 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 21:47:27,918 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 21:47:27,920 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 21:47:27,934 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-21 21:47:27,952 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 21:47:27,952 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 21:47:27,953 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 21:47:27,953 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-21 21:47:27,954 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-21 21:47:27,954 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-21 21:47:27,954 INFO L133 SettingsManager]: * Use SBE=true [2018-07-21 21:47:27,954 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 21:47:27,955 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 21:47:27,955 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 21:47:27,955 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 21:47:27,955 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 21:47:27,955 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 21:47:27,956 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 21:47:27,956 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 21:47:27,956 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 21:47:27,956 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 21:47:27,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 21:47:27,957 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 21:47:27,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 21:47:27,957 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 21:47:27,957 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 21:47:27,957 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 21:47:27,958 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 21:47:27,958 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-21 21:47:27,958 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 21:47:27,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 21:47:27,958 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 21:47:27,959 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 21:47:28,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 21:47:28,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 21:47:28,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 21:47:28,021 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 21:47:28,021 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 21:47:28,021 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2018-07-21 21:47:28,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/cebe06707/f67d37b58a0d4a078ec80ab425186769/FLAG42abe388d [2018-07-21 21:47:28,549 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 21:47:28,549 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2018-07-21 21:47:28,555 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/cebe06707/f67d37b58a0d4a078ec80ab425186769/FLAG42abe388d [2018-07-21 21:47:28,571 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/cebe06707/f67d37b58a0d4a078ec80ab425186769 [2018-07-21 21:47:28,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 21:47:28,585 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 21:47:28,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 21:47:28,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 21:47:28,594 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 21:47:28,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cae29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28, skipping insertion in model container [2018-07-21 21:47:28,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,785 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 21:47:28,841 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 21:47:28,859 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 21:47:28,868 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 21:47:28,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28 WrapperNode [2018-07-21 21:47:28,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 21:47:28,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 21:47:28,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 21:47:28,885 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 21:47:28,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 21:47:28,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 21:47:28,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 21:47:28,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 21:47:28,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... [2018-07-21 21:47:28,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 21:47:28,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 21:47:28,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 21:47:28,946 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 21:47:28,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 21:47:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 21:47:29,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 21:47:29,319 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 21:47:29,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:47:29 BoogieIcfgContainer [2018-07-21 21:47:29,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 21:47:29,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 21:47:29,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 21:47:29,324 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 21:47:29,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:47:28" (1/3) ... [2018-07-21 21:47:29,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21de6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:47:29, skipping insertion in model container [2018-07-21 21:47:29,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:28" (2/3) ... [2018-07-21 21:47:29,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21de6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:47:29, skipping insertion in model container [2018-07-21 21:47:29,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:47:29" (3/3) ... [2018-07-21 21:47:29,328 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2018-07-21 21:47:29,335 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 21:47:29,342 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 21:47:29,388 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 21:47:29,389 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 21:47:29,389 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 21:47:29,389 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 21:47:29,389 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 21:47:29,390 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 21:47:29,390 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 21:47:29,390 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 21:47:29,390 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 21:47:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-07-21 21:47:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-21 21:47:29,406 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:47:29,407 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-21 21:47:29,407 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:47:29,411 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2018-07-21 21:47:29,412 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:47:29,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:47:29,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:29,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:47:29,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:47:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:47:29,542 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 21:47:29,542 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 21:47:29,544 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-21 21:47:29,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-21 21:47:29,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-21 21:47:29,564 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2018-07-21 21:47:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 21:47:29,577 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-07-21 21:47:29,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-21 21:47:29,578 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-07-21 21:47:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 21:47:29,587 INFO L225 Difference]: With dead ends: 22 [2018-07-21 21:47:29,588 INFO L226 Difference]: Without dead ends: 10 [2018-07-21 21:47:29,591 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-21 21:47:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-21 21:47:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-21 21:47:29,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-21 21:47:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-07-21 21:47:29,639 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2018-07-21 21:47:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 21:47:29,639 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-07-21 21:47:29,639 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-21 21:47:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-07-21 21:47:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-21 21:47:29,640 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:47:29,640 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-21 21:47:29,640 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:47:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1805899826, now seen corresponding path program 1 times [2018-07-21 21:47:29,641 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:47:29,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:47:29,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:29,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:47:29,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:47:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:47:29,814 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 21:47:29,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 21:47:29,816 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 21:47:29,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 21:47:29,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-21 21:47:29,817 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2018-07-21 21:47:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 21:47:29,892 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-07-21 21:47:29,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 21:47:29,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-07-21 21:47:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 21:47:29,893 INFO L225 Difference]: With dead ends: 16 [2018-07-21 21:47:29,893 INFO L226 Difference]: Without dead ends: 12 [2018-07-21 21:47:29,894 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-21 21:47:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-21 21:47:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-21 21:47:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-21 21:47:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-07-21 21:47:29,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2018-07-21 21:47:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 21:47:29,898 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-07-21 21:47:29,898 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 21:47:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-07-21 21:47:29,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-21 21:47:29,899 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:47:29,899 INFO L358 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 21:47:29,899 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:47:29,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1308620939, now seen corresponding path program 1 times [2018-07-21 21:47:29,900 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:47:29,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:47:29,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:29,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:47:29,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:47:30,119 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-07-21 21:47:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:47:30,342 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 21:47:30,342 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 21:47:30,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:47:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:47:30,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 21:47:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:47:30,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-21 21:47:30,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-07-21 21:47:30,693 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-21 21:47:30,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-21 21:47:30,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-21 21:47:30,694 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 11 states. [2018-07-21 21:47:31,004 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-07-21 21:47:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 21:47:31,201 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-07-21 21:47:31,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-21 21:47:31,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-07-21 21:47:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 21:47:31,203 INFO L225 Difference]: With dead ends: 32 [2018-07-21 21:47:31,203 INFO L226 Difference]: Without dead ends: 20 [2018-07-21 21:47:31,204 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-07-21 21:47:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-21 21:47:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-21 21:47:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-21 21:47:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-07-21 21:47:31,209 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2018-07-21 21:47:31,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 21:47:31,209 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-07-21 21:47:31,209 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-21 21:47:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-07-21 21:47:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-21 21:47:31,210 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:47:31,210 INFO L358 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 21:47:31,211 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:47:31,211 INFO L82 PathProgramCache]: Analyzing trace with hash 6671842, now seen corresponding path program 1 times [2018-07-21 21:47:31,211 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:47:31,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:47:31,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:31,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:47:31,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:47:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:47:31,270 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 21:47:31,270 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 21:47:31,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:47:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:47:31,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 21:47:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:47:31,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-21 21:47:31,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-07-21 21:47:31,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 21:47:31,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 21:47:31,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 21:47:31,332 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2018-07-21 21:47:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 21:47:31,496 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-07-21 21:47:31,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 21:47:31,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-21 21:47:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 21:47:31,498 INFO L225 Difference]: With dead ends: 28 [2018-07-21 21:47:31,498 INFO L226 Difference]: Without dead ends: 20 [2018-07-21 21:47:31,499 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 21:47:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-21 21:47:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-21 21:47:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-21 21:47:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-07-21 21:47:31,503 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2018-07-21 21:47:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 21:47:31,504 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-07-21 21:47:31,504 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 21:47:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-07-21 21:47:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-21 21:47:31,505 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:47:31,505 INFO L358 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-07-21 21:47:31,505 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:47:31,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1245248445, now seen corresponding path program 2 times [2018-07-21 21:47:31,506 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:47:31,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:47:31,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:31,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:47:31,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:47:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-21 21:47:31,856 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 21:47:31,856 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 21:47:31,870 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-21 21:47:31,892 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-21 21:47:31,892 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-21 21:47:31,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 21:47:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:47:32,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-21 21:47:32,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2018-07-21 21:47:32,154 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-21 21:47:32,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-21 21:47:32,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-07-21 21:47:32,155 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 16 states. [2018-07-21 21:47:32,675 WARN L169 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-07-21 21:47:32,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 21:47:32,788 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-07-21 21:47:32,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-21 21:47:32,788 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2018-07-21 21:47:32,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 21:47:32,789 INFO L225 Difference]: With dead ends: 40 [2018-07-21 21:47:32,789 INFO L226 Difference]: Without dead ends: 28 [2018-07-21 21:47:32,790 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2018-07-21 21:47:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-21 21:47:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2018-07-21 21:47:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-21 21:47:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-07-21 21:47:32,795 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2018-07-21 21:47:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 21:47:32,795 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-07-21 21:47:32,795 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-21 21:47:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-07-21 21:47:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-21 21:47:32,796 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:47:32,796 INFO L358 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 21:47:32,797 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:47:32,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1696983060, now seen corresponding path program 2 times [2018-07-21 21:47:32,797 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:47:32,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:47:32,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:32,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-21 21:47:32,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:47:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-21 21:47:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-21 21:47:32,841 INFO L424 BasicCegarLoop]: Counterexample might be feasible [2018-07-21 21:47:32,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 09:47:32 BoogieIcfgContainer [2018-07-21 21:47:32,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 21:47:32,861 INFO L168 Benchmark]: Toolchain (without parser) took 4280.58 ms. Allocated memory was 305.7 MB in the beginning and 480.8 MB in the end (delta: 175.1 MB). Free memory was 252.8 MB in the beginning and 385.0 MB in the end (delta: -132.3 MB). Peak memory consumption was 42.8 MB. Max. memory is 5.3 GB. [2018-07-21 21:47:32,862 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 305.7 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 21:47:32,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.67 ms. Allocated memory is still 305.7 MB. Free memory was 252.8 MB in the beginning and 242.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-07-21 21:47:32,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.82 ms. Allocated memory is still 305.7 MB. Free memory was 242.6 MB in the beginning and 240.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-07-21 21:47:32,863 INFO L168 Benchmark]: Boogie Preprocessor took 26.36 ms. Allocated memory is still 305.7 MB. Free memory is still 240.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 21:47:32,864 INFO L168 Benchmark]: RCFGBuilder took 373.94 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 240.6 MB in the beginning and 435.5 MB in the end (delta: -194.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 5.3 GB. [2018-07-21 21:47:32,864 INFO L168 Benchmark]: TraceAbstraction took 3539.30 ms. Allocated memory was 465.6 MB in the beginning and 480.8 MB in the end (delta: 15.2 MB). Free memory was 435.5 MB in the beginning and 385.0 MB in the end (delta: 50.5 MB). Peak memory consumption was 65.7 MB. Max. memory is 5.3 GB. [2018-07-21 21:47:32,867 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 305.7 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 297.67 ms. Allocated memory is still 305.7 MB. Free memory was 252.8 MB in the beginning and 242.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 34.82 ms. Allocated memory is still 305.7 MB. Free memory was 242.6 MB in the beginning and 240.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.36 ms. Allocated memory is still 305.7 MB. Free memory is still 240.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 373.94 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 240.6 MB in the beginning and 435.5 MB in the end (delta: -194.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3539.30 ms. Allocated memory was 465.6 MB in the beginning and 480.8 MB in the end (delta: 15.2 MB). Free memory was 435.5 MB in the beginning and 385.0 MB in the end (delta: 50.5 MB). Peak memory consumption was 65.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND TRUE i==4 [L15] sn=-10 [L13] i++ [L13] i++ [L13] COND FALSE !(i<=n) [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. UNSAFE Result, 3.4s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 28 SDslu, 119 SDs, 0 SdLazy, 233 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=5, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 9289 SizeOfPredicates, 11 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 18/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_21-47-32-880.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_21-47-32-880.csv Received shutdown request...