java -Xmx8000000000 -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 csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum03_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 23:29:08,829 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 23:29:08,832 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 23:29:08,849 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 23:29:08,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 23:29:08,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 23:29:08,852 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 23:29:08,855 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 23:29:08,857 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 23:29:08,858 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 23:29:08,859 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 23:29:08,859 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 23:29:08,860 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 23:29:08,861 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 23:29:08,863 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 23:29:08,864 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 23:29:08,866 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 23:29:08,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 23:29:08,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 23:29:08,881 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 23:29:08,883 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 23:29:08,884 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 23:29:08,886 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 23:29:08,895 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-23 23:29:08,920 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 23:29:08,921 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 23:29:08,925 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 23:29:08,926 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-23 23:29:08,926 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-23 23:29:08,927 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-23 23:29:08,927 INFO L133 SettingsManager]: * Use SBE=true [2018-07-23 23:29:08,927 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 23:29:08,927 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 23:29:08,927 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 23:29:08,928 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 23:29:08,928 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 23:29:08,928 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 23:29:08,928 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 23:29:08,930 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 23:29:08,930 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 23:29:08,930 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 23:29:08,931 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 23:29:08,931 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 23:29:08,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 23:29:08,932 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 23:29:08,933 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 23:29:08,933 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 23:29:08,933 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-23 23:29:08,933 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 23:29:08,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 23:29:08,934 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 23:29:08,934 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 23:29:08,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 23:29:09,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 23:29:09,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 23:29:09,016 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 23:29:09,017 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 23:29:09,018 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03_false-unreach-call_true-termination.i [2018-07-23 23:29:09,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f342dd8/27b9c1f1d38f4c7ca63b771744bf4be7/FLAGfaec78c42 [2018-07-23 23:29:09,486 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 23:29:09,489 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03_false-unreach-call_true-termination.i [2018-07-23 23:29:09,496 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f342dd8/27b9c1f1d38f4c7ca63b771744bf4be7/FLAGfaec78c42 [2018-07-23 23:29:09,511 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f342dd8/27b9c1f1d38f4c7ca63b771744bf4be7 [2018-07-23 23:29:09,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 23:29:09,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 23:29:09,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 23:29:09,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 23:29:09,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 23:29:09,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47db165b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09, skipping insertion in model container [2018-07-23 23:29:09,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,735 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 23:29:09,785 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:29:09,804 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 23:29:09,811 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:29:09,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09 WrapperNode [2018-07-23 23:29:09,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 23:29:09,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 23:29:09,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 23:29:09,825 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 23:29:09,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 23:29:09,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 23:29:09,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 23:29:09,860 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 23:29:09,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... [2018-07-23 23:29:09,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 23:29:09,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 23:29:09,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 23:29:09,881 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 23:29:09,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (1/1) ... No working directory specified, using /storage/repos/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 [2018-07-23 23:29:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 23:29:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 23:29:10,170 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 23:29:10,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:29:10 BoogieIcfgContainer [2018-07-23 23:29:10,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 23:29:10,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 23:29:10,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 23:29:10,175 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 23:29:10,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 11:29:09" (1/3) ... [2018-07-23 23:29:10,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56934ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:29:10, skipping insertion in model container [2018-07-23 23:29:10,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:29:09" (2/3) ... [2018-07-23 23:29:10,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56934ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:29:10, skipping insertion in model container [2018-07-23 23:29:10,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:29:10" (3/3) ... [2018-07-23 23:29:10,179 INFO L112 eAbstractionObserver]: Analyzing ICFG sum03_false-unreach-call_true-termination.i [2018-07-23 23:29:10,192 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 23:29:10,201 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 23:29:10,248 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 23:29:10,249 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 23:29:10,249 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 23:29:10,249 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 23:29:10,249 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 23:29:10,250 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 23:29:10,250 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 23:29:10,250 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 23:29:10,250 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 23:29:10,272 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-07-23 23:29:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 23:29:10,279 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:29:10,280 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:29:10,280 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:29:10,286 INFO L82 PathProgramCache]: Analyzing trace with hash 150935469, now seen corresponding path program 1 times [2018-07-23 23:29:10,288 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:29:10,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:29:10,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:10,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:29:10,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:29:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:10,570 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:29:10,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 23:29:10,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:29:10,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:29:10,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:29:10,599 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-07-23 23:29:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:29:10,746 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2018-07-23 23:29:10,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 23:29:10,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-23 23:29:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:29:10,761 INFO L225 Difference]: With dead ends: 32 [2018-07-23 23:29:10,761 INFO L226 Difference]: Without dead ends: 21 [2018-07-23 23:29:10,764 INFO L573 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 [2018-07-23 23:29:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-23 23:29:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-07-23 23:29:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-23 23:29:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-07-23 23:29:10,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2018-07-23 23:29:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:29:10,799 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-07-23 23:29:10,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:29:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-07-23 23:29:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 23:29:10,800 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:29:10,800 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:29:10,801 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:29:10,801 INFO L82 PathProgramCache]: Analyzing trace with hash 150875887, now seen corresponding path program 1 times [2018-07-23 23:29:10,801 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:29:10,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:29:10,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:10,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:29:10,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:29:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:10,951 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:29:10,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 23:29:10,954 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 23:29:10,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 23:29:10,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 23:29:10,955 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-07-23 23:29:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:29:11,245 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-07-23 23:29:11,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 23:29:11,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-23 23:29:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:29:11,247 INFO L225 Difference]: With dead ends: 30 [2018-07-23 23:29:11,247 INFO L226 Difference]: Without dead ends: 28 [2018-07-23 23:29:11,249 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-23 23:29:11,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-23 23:29:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2018-07-23 23:29:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 23:29:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-07-23 23:29:11,258 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8 [2018-07-23 23:29:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:29:11,260 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-07-23 23:29:11,260 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 23:29:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-07-23 23:29:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 23:29:11,261 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:29:11,261 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:29:11,261 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:29:11,262 INFO L82 PathProgramCache]: Analyzing trace with hash -866095302, now seen corresponding path program 1 times [2018-07-23 23:29:11,262 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:29:11,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:29:11,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:11,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:29:11,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:29:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 23:29:11,346 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:29:11,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:29:11,347 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:29:11,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:29:11,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:29:11,348 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2018-07-23 23:29:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:29:11,416 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-07-23 23:29:11,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:29:11,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-07-23 23:29:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:29:11,418 INFO L225 Difference]: With dead ends: 34 [2018-07-23 23:29:11,418 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 23:29:11,418 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:29:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 23:29:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-07-23 23:29:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 23:29:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-07-23 23:29:11,423 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2018-07-23 23:29:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:29:11,424 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-07-23 23:29:11,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:29:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-07-23 23:29:11,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 23:29:11,425 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:29:11,425 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:29:11,425 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:29:11,425 INFO L82 PathProgramCache]: Analyzing trace with hash -473008710, now seen corresponding path program 2 times [2018-07-23 23:29:11,426 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:29:11,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:29:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:11,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:29:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:29:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:11,596 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:29:11,596 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-23 23:29:11,616 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 23:29:11,641 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 23:29:11,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:29:11,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:29:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:11,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:29:11,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-07-23 23:29:11,714 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:29:11,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:29:11,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:29:11,715 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2018-07-23 23:29:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:29:11,778 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-07-23 23:29:11,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:29:11,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-23 23:29:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:29:11,779 INFO L225 Difference]: With dead ends: 34 [2018-07-23 23:29:11,779 INFO L226 Difference]: Without dead ends: 26 [2018-07-23 23:29:11,780 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:29:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-23 23:29:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-07-23 23:29:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 23:29:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-07-23 23:29:11,786 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14 [2018-07-23 23:29:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:29:11,787 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-07-23 23:29:11,787 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:29:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-07-23 23:29:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 23:29:11,788 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:29:11,788 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2018-07-23 23:29:11,788 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:29:11,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1624266247, now seen corresponding path program 3 times [2018-07-23 23:29:11,789 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:29:11,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:29:11,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:11,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:29:11,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:29:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:11,922 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:29:11,922 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-23 23:29:11,954 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 23:29:12,146 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-07-23 23:29:12,146 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:29:12,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:29:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:12,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:29:12,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 6 [2018-07-23 23:29:12,216 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 23:29:12,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 23:29:12,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:29:12,217 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2018-07-23 23:29:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:29:12,400 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-07-23 23:29:12,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 23:29:12,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-07-23 23:29:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:29:12,401 INFO L225 Difference]: With dead ends: 40 [2018-07-23 23:29:12,401 INFO L226 Difference]: Without dead ends: 32 [2018-07-23 23:29:12,402 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:29:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-23 23:29:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-07-23 23:29:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-23 23:29:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-07-23 23:29:12,414 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 20 [2018-07-23 23:29:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:29:12,415 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-07-23 23:29:12,415 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 23:29:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-07-23 23:29:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 23:29:12,416 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:29:12,416 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-07-23 23:29:12,416 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:29:12,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1238759276, now seen corresponding path program 4 times [2018-07-23 23:29:12,417 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:29:12,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:29:12,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:12,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:29:12,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:29:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:12,982 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:29:12,982 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-23 23:29:12,992 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 23:29:13,014 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 23:29:13,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:29:13,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:29:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:13,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:29:13,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-07-23 23:29:13,128 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 23:29:13,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 23:29:13,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:29:13,129 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2018-07-23 23:29:13,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:29:13,228 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-07-23 23:29:13,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 23:29:13,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-07-23 23:29:13,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:29:13,230 INFO L225 Difference]: With dead ends: 46 [2018-07-23 23:29:13,230 INFO L226 Difference]: Without dead ends: 38 [2018-07-23 23:29:13,231 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:29:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-23 23:29:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-07-23 23:29:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 23:29:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-07-23 23:29:13,238 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2018-07-23 23:29:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:29:13,239 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-07-23 23:29:13,239 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 23:29:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-07-23 23:29:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 23:29:13,240 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:29:13,240 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2018-07-23 23:29:13,241 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:29:13,241 INFO L82 PathProgramCache]: Analyzing trace with hash 482663777, now seen corresponding path program 5 times [2018-07-23 23:29:13,241 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:29:13,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:29:13,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:13,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:29:13,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:29:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:13,711 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:29:13,711 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-23 23:29:13,725 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-23 23:29:13,887 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-07-23 23:29:13,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:29:13,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:29:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:14,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:29:14,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2018-07-23 23:29:14,179 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 23:29:14,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 23:29:14,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-23 23:29:14,180 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 10 states. [2018-07-23 23:29:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:29:14,304 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-07-23 23:29:14,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 23:29:14,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-07-23 23:29:14,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:29:14,307 INFO L225 Difference]: With dead ends: 52 [2018-07-23 23:29:14,307 INFO L226 Difference]: Without dead ends: 44 [2018-07-23 23:29:14,308 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-23 23:29:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-23 23:29:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-07-23 23:29:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-23 23:29:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-07-23 23:29:14,314 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 32 [2018-07-23 23:29:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:29:14,315 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-07-23 23:29:14,315 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 23:29:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-07-23 23:29:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-23 23:29:14,316 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:29:14,317 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1] [2018-07-23 23:29:14,317 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:29:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1387387794, now seen corresponding path program 6 times [2018-07-23 23:29:14,317 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:29:14,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:29:14,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:14,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:29:14,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:29:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:29:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:14,575 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:29:14,575 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-23 23:29:14,593 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-23 23:29:18,892 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-07-23 23:29:18,893 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:29:18,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:29:19,492 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 27 [2018-07-23 23:29:32,104 WARN L169 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-07-23 23:29:34,943 WARN L169 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-23 23:29:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 10 proven. 70 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:29:35,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:29:35,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 18 [2018-07-23 23:29:35,037 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 23:29:35,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 23:29:35,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=265, Unknown=4, NotChecked=0, Total=306 [2018-07-23 23:29:35,038 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 18 states. [2018-07-23 23:30:17,724 WARN L169 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2018-07-23 23:30:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:30:34,348 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-07-23 23:30:34,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 23:30:34,354 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-07-23 23:30:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:30:34,355 INFO L225 Difference]: With dead ends: 58 [2018-07-23 23:30:34,355 INFO L226 Difference]: Without dead ends: 50 [2018-07-23 23:30:34,356 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=78, Invalid=615, Unknown=9, NotChecked=0, Total=702 [2018-07-23 23:30:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-23 23:30:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-07-23 23:30:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-23 23:30:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-07-23 23:30:34,364 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 38 [2018-07-23 23:30:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:30:34,364 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-07-23 23:30:34,365 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 23:30:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-07-23 23:30:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 23:30:34,366 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:30:34,366 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1] [2018-07-23 23:30:34,366 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:30:34,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2100768187, now seen corresponding path program 7 times [2018-07-23 23:30:34,367 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:30:34,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:30:34,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:34,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:30:34,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:30:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:30:34,930 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:30:34,930 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-23 23:30:34,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:30:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:30:34,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:30:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:30:35,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:30:35,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-07-23 23:30:35,037 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 23:30:35,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 23:30:35,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 23:30:35,038 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 9 states. [2018-07-23 23:30:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:30:35,242 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2018-07-23 23:30:35,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 23:30:35,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-07-23 23:30:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:30:35,245 INFO L225 Difference]: With dead ends: 64 [2018-07-23 23:30:35,246 INFO L226 Difference]: Without dead ends: 56 [2018-07-23 23:30:35,246 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 23:30:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-23 23:30:35,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-07-23 23:30:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-23 23:30:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-07-23 23:30:35,257 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 44 [2018-07-23 23:30:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:30:35,259 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-07-23 23:30:35,259 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 23:30:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-07-23 23:30:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 23:30:35,260 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:30:35,261 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1] [2018-07-23 23:30:35,261 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:30:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash -72005304, now seen corresponding path program 8 times [2018-07-23 23:30:35,261 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:30:35,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:30:35,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:35,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:30:35,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:30:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:30:35,575 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:30:35,575 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:30:35,584 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 23:30:35,611 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 23:30:35,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:30:35,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:30:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:30:35,688 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:30:35,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-07-23 23:30:35,688 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 23:30:35,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 23:30:35,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-23 23:30:35,689 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 10 states. [2018-07-23 23:30:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:30:35,871 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2018-07-23 23:30:35,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 23:30:35,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-07-23 23:30:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:30:35,873 INFO L225 Difference]: With dead ends: 70 [2018-07-23 23:30:35,874 INFO L226 Difference]: Without dead ends: 62 [2018-07-23 23:30:35,875 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-23 23:30:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-23 23:30:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-07-23 23:30:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 23:30:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-07-23 23:30:35,885 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 50 [2018-07-23 23:30:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:30:35,886 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-07-23 23:30:35,886 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 23:30:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-07-23 23:30:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 23:30:35,887 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:30:35,887 INFO L353 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1] [2018-07-23 23:30:35,888 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:30:35,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1899903211, now seen corresponding path program 9 times [2018-07-23 23:30:35,888 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:30:35,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:30:35,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:35,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:30:35,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:30:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 16 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:30:36,190 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:30:36,190 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:30:36,197 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 23:30:40,047 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-07-23 23:30:40,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:30:40,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:30:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 16 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:30:40,097 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:30:40,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-07-23 23:30:40,098 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 23:30:40,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 23:30:40,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-23 23:30:40,099 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 11 states. [2018-07-23 23:30:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:30:40,365 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-07-23 23:30:40,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 23:30:40,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2018-07-23 23:30:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:30:40,367 INFO L225 Difference]: With dead ends: 76 [2018-07-23 23:30:40,368 INFO L226 Difference]: Without dead ends: 68 [2018-07-23 23:30:40,369 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-23 23:30:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-23 23:30:40,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2018-07-23 23:30:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 23:30:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-07-23 23:30:40,378 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 56 [2018-07-23 23:30:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:30:40,379 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-07-23 23:30:40,379 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 23:30:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-07-23 23:30:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-23 23:30:40,380 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:30:40,380 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1] [2018-07-23 23:30:40,381 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:30:40,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1880749858, now seen corresponding path program 10 times [2018-07-23 23:30:40,381 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:30:40,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:30:40,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:40,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:30:40,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:30:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 18 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:30:40,780 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:30:40,780 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:30:40,788 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 23:30:40,831 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 23:30:40,832 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:30:40,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:30:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 18 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:30:40,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:30:40,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-07-23 23:30:40,921 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 23:30:40,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 23:30:40,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-23 23:30:40,922 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 12 states. [2018-07-23 23:30:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:30:41,185 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2018-07-23 23:30:41,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 23:30:41,187 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2018-07-23 23:30:41,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:30:41,188 INFO L225 Difference]: With dead ends: 82 [2018-07-23 23:30:41,188 INFO L226 Difference]: Without dead ends: 74 [2018-07-23 23:30:41,189 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-23 23:30:41,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-23 23:30:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2018-07-23 23:30:41,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 23:30:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-07-23 23:30:41,199 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 62 [2018-07-23 23:30:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:30:41,199 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-07-23 23:30:41,199 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 23:30:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-07-23 23:30:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 23:30:41,201 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:30:41,201 INFO L353 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2018-07-23 23:30:41,201 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:30:41,201 INFO L82 PathProgramCache]: Analyzing trace with hash -901830289, now seen corresponding path program 11 times [2018-07-23 23:30:41,201 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:30:41,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:30:41,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:41,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:30:41,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:30:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-23 23:30:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-23 23:30:41,356 INFO L419 BasicCegarLoop]: Counterexample might be feasible [2018-07-23 23:30:41,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 11:30:41 BoogieIcfgContainer [2018-07-23 23:30:41,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 23:30:41,389 INFO L168 Benchmark]: Toolchain (without parser) took 91866.37 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.8 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -145.2 MB). Peak memory consumption was 583.6 MB. Max. memory is 7.1 GB. [2018-07-23 23:30:41,390 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 23:30:41,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 23:30:41,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 23:30:41,392 INFO L168 Benchmark]: Boogie Preprocessor took 20.47 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 23:30:41,393 INFO L168 Benchmark]: RCFGBuilder took 289.81 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-07-23 23:30:41,394 INFO L168 Benchmark]: TraceAbstraction took 91216.54 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 614.6 MB). Peak memory consumption was 614.6 MB. Max. memory is 7.1 GB. [2018-07-23 23:30:41,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.47 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 289.81 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 91216.54 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 614.6 MB). Peak memory consumption was 614.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int sn=0; [L11] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L11] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L12] unsigned int x=0; [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE, RET !(!(cond)) [L18] __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND FALSE !(x<10) [L17] x++ [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. UNSAFE Result, 91.1s OverallTime, 13 OverallIterations, 11 TraceHistogramMax, 61.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 271 SDtfs, 41 SDslu, 1595 SDs, 0 SdLazy, 1080 SolverSat, 4 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 40.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 333 SyntacticMatches, 21 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 38.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 18 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 8.8s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 782 NumberOfCodeBlocks, 776 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 693 ConstructedInterpolants, 23 QuantifiedInterpolants, 219574 SizeOfPredicates, 18 NumberOfNonLiveVariables, 743 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 185/1895 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/sum03_false-unreach-call_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_23-30-41-427.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/sum03_false-unreach-call_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_23-30-41-427.csv Received shutdown request...