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/for_bounded_loop1_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 21:43:38,912 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 21:43:38,914 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 21:43:38,929 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 21:43:38,930 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 21:43:38,931 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 21:43:38,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 21:43:38,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 21:43:38,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 21:43:38,937 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 21:43:38,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-21 21:43:38,962 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 21:43:38,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 21:43:38,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 21:43:38,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 21:43:38,979 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-21 21:43:38,979 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-21 21:43:38,979 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-21 21:43:38,980 INFO L133 SettingsManager]: * Use SBE=true [2018-07-21 21:43:38,980 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 21:43:38,980 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 21:43:38,980 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 21:43:38,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 21:43:38,981 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 21:43:38,981 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 21:43:38,981 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 21:43:38,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 21:43:38,982 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 21:43:38,982 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 21:43:38,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 21:43:38,983 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 21:43:38,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 21:43:38,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 21:43:38,983 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 21:43:38,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 21:43:38,984 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 21:43:38,984 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-21 21:43:38,984 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 21:43:38,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 21:43:38,984 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 21:43:38,985 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 21:43:39,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 21:43:39,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 21:43:39,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 21:43:39,047 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 21:43:39,048 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 21:43:39,048 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-07-21 21:43:39,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/34d5a9d72/98cb450b30434279b97032c64226abcd/FLAG40d62e71d [2018-07-21 21:43:39,576 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 21:43:39,576 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-07-21 21:43:39,584 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/34d5a9d72/98cb450b30434279b97032c64226abcd/FLAG40d62e71d [2018-07-21 21:43:39,598 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/34d5a9d72/98cb450b30434279b97032c64226abcd [2018-07-21 21:43:39,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 21:43:39,623 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 21:43:39,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 21:43:39,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 21:43:39,631 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 21:43:39,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6111f881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39, skipping insertion in model container [2018-07-21 21:43:39,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,823 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 21:43:39,881 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 21:43:39,900 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 21:43:39,907 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 21:43:39,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39 WrapperNode [2018-07-21 21:43:39,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 21:43:39,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 21:43:39,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 21:43:39,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 21:43:39,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 21:43:39,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 21:43:39,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 21:43:39,967 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 21:43:39,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (1/1) ... [2018-07-21 21:43:39,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 21:43:39,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 21:43:39,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 21:43:39,993 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 21:43:39,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (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 21:43:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 21:43:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 21:43:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assert [2018-07-21 21:43:40,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assert [2018-07-21 21:43:40,477 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 21:43:40,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:43:40 BoogieIcfgContainer [2018-07-21 21:43:40,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 21:43:40,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 21:43:40,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 21:43:40,496 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 21:43:40,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:43:39" (1/3) ... [2018-07-21 21:43:40,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57277eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:43:40, skipping insertion in model container [2018-07-21 21:43:40,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:39" (2/3) ... [2018-07-21 21:43:40,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57277eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:43:40, skipping insertion in model container [2018-07-21 21:43:40,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:43:40" (3/3) ... [2018-07-21 21:43:40,500 INFO L112 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1_false-unreach-call_true-termination.i [2018-07-21 21:43:40,519 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 21:43:40,533 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 21:43:40,591 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 21:43:40,592 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 21:43:40,592 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 21:43:40,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 21:43:40,592 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 21:43:40,593 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 21:43:40,593 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 21:43:40,593 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 21:43:40,593 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 21:43:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-07-21 21:43:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-21 21:43:40,621 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:43:40,622 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 21:43:40,623 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:43:40,629 INFO L82 PathProgramCache]: Analyzing trace with hash 195309163, now seen corresponding path program 1 times [2018-07-21 21:43:40,631 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:43:40,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:43:40,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:43:40,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:43:40,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:43:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:43:40,768 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 21:43:40,770 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 21:43:40,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 21:43:40,774 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-21 21:43:40,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-21 21:43:40,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-21 21:43:40,794 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-07-21 21:43:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 21:43:40,831 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2018-07-21 21:43:40,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-21 21:43:40,833 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2018-07-21 21:43:40,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 21:43:40,844 INFO L225 Difference]: With dead ends: 37 [2018-07-21 21:43:40,844 INFO L226 Difference]: Without dead ends: 17 [2018-07-21 21:43:40,850 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 21:43:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-21 21:43:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-21 21:43:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-21 21:43:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-07-21 21:43:40,894 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 8 [2018-07-21 21:43:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 21:43:40,895 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-07-21 21:43:40,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-21 21:43:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-07-21 21:43:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-21 21:43:40,896 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:43:40,896 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 21:43:40,896 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:43:40,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1242769792, now seen corresponding path program 1 times [2018-07-21 21:43:40,898 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:43:40,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:43:40,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:43:40,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:43:40,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:43:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:43:41,120 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 21:43:41,121 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 21:43:41,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 21:43:41,122 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 21:43:41,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 21:43:41,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-21 21:43:41,124 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2018-07-21 21:43:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 21:43:41,339 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-07-21 21:43:41,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 21:43:41,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-21 21:43:41,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 21:43:41,341 INFO L225 Difference]: With dead ends: 28 [2018-07-21 21:43:41,341 INFO L226 Difference]: Without dead ends: 25 [2018-07-21 21:43:41,342 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-21 21:43:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-21 21:43:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-07-21 21:43:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-21 21:43:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-21 21:43:41,357 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2018-07-21 21:43:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 21:43:41,358 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-21 21:43:41,358 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 21:43:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-21 21:43:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-21 21:43:41,359 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:43:41,359 INFO L358 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 21:43:41,359 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:43:41,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1501499656, now seen corresponding path program 1 times [2018-07-21 21:43:41,361 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:43:41,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:43:41,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:43:41,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:43:41,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:43:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:43:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:43:41,789 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 21:43:41,789 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 21:43:41,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:43:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 21:43:41,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 21:43:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 21:43:42,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-21 21:43:42,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2018-07-21 21:43:42,043 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-21 21:43:42,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-21 21:43:42,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-07-21 21:43:42,044 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 11 states. [2018-07-21 21:43:42,509 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-21 21:43:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 21:43:42,677 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-21 21:43:42,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-21 21:43:42,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2018-07-21 21:43:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 21:43:42,679 INFO L225 Difference]: With dead ends: 35 [2018-07-21 21:43:42,679 INFO L226 Difference]: Without dead ends: 31 [2018-07-21 21:43:42,680 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-07-21 21:43:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-21 21:43:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2018-07-21 21:43:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-21 21:43:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-21 21:43:42,688 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2018-07-21 21:43:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 21:43:42,689 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-21 21:43:42,689 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-21 21:43:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-21 21:43:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-21 21:43:42,690 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 21:43:42,691 INFO L358 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 21:43:42,691 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 21:43:42,691 INFO L82 PathProgramCache]: Analyzing trace with hash 805485160, now seen corresponding path program 1 times [2018-07-21 21:43:42,691 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 21:43:42,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 21:43:42,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:43:42,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 21:43:42,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 21:43:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-21 21:43:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-21 21:43:42,742 INFO L424 BasicCegarLoop]: Counterexample might be feasible [2018-07-21 21:43:42,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 09:43:42 BoogieIcfgContainer [2018-07-21 21:43:42,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 21:43:42,765 INFO L168 Benchmark]: Toolchain (without parser) took 3153.01 ms. Allocated memory was 309.9 MB in the beginning and 476.1 MB in the end (delta: 166.2 MB). Free memory was 255.3 MB in the beginning and 363.1 MB in the end (delta: -107.8 MB). Peak memory consumption was 58.4 MB. Max. memory is 5.3 GB. [2018-07-21 21:43:42,767 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 21:43:42,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.25 ms. Allocated memory is still 309.9 MB. Free memory was 254.3 MB in the beginning and 245.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-07-21 21:43:42,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.54 ms. Allocated memory is still 309.9 MB. Free memory was 245.0 MB in the beginning and 244.0 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-07-21 21:43:42,768 INFO L168 Benchmark]: Boogie Preprocessor took 25.92 ms. Allocated memory is still 309.9 MB. Free memory was 244.0 MB in the beginning and 243.0 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-07-21 21:43:42,769 INFO L168 Benchmark]: RCFGBuilder took 485.02 ms. Allocated memory was 309.9 MB in the beginning and 476.1 MB in the end (delta: 166.2 MB). Free memory was 243.0 MB in the beginning and 446.7 MB in the end (delta: -203.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 5.3 GB. [2018-07-21 21:43:42,770 INFO L168 Benchmark]: TraceAbstraction took 2285.53 ms. Allocated memory is still 476.1 MB. Free memory was 445.4 MB in the beginning and 363.1 MB in the end (delta: 82.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 5.3 GB. [2018-07-21 21:43:42,774 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 300.25 ms. Allocated memory is still 309.9 MB. Free memory was 254.3 MB in the beginning and 245.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 40.54 ms. Allocated memory is still 309.9 MB. Free memory was 245.0 MB in the beginning and 244.0 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * Boogie Preprocessor took 25.92 ms. Allocated memory is still 309.9 MB. Free memory was 244.0 MB in the beginning and 243.0 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 485.02 ms. Allocated memory was 309.9 MB in the beginning and 476.1 MB in the end (delta: 166.2 MB). Free memory was 243.0 MB in the beginning and 446.7 MB in the end (delta: -203.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2285.53 ms. Allocated memory is still 476.1 MB. Free memory was 445.4 MB in the beginning and 363.1 MB in the end (delta: 82.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0, x=0, y=0; [L14] int i=0, x=0, y=0; [L14] int i=0, x=0, y=0; [L15] int n=__VERIFIER_nondet_int(); [L16] COND FALSE !(!(n>0)) [L17] i=0 [L17] COND TRUE i