java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:50:43,910 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:50:43,912 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:50:43,928 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:50:43,928 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:50:43,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:50:43,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:50:43,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:50:43,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:50:43,943 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:50:43,944 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:50:43,944 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:50:43,945 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:50:43,946 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:50:43,947 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:50:43,948 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:50:43,949 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:50:43,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:50:43,953 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:50:43,954 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:50:43,955 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:50:43,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:50:43,959 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:50:43,969 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-22 15:50:43,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:50:43,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:50:43,991 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:50:43,991 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:50:43,995 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:50:43,995 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:50:43,995 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:50:43,995 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:50:43,996 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:50:43,996 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:50:43,996 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:50:43,996 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:50:43,996 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:50:43,997 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:50:43,998 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:50:43,998 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:50:43,998 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:50:43,998 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:50:43,999 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:50:44,000 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:50:44,000 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:50:44,000 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:50:44,000 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:50:44,001 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:50:44,001 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:50:44,001 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:50:44,001 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:50:44,001 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:50:44,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:50:44,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:50:44,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:50:44,069 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:50:44,070 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:50:44,070 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-10-22 15:50:44,136 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9e7af6f6/0d8690a5e6a04221abb8d8bf976be0e2/FLAGdc6c19e67 [2018-10-22 15:50:44,600 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:50:44,601 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-10-22 15:50:44,608 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9e7af6f6/0d8690a5e6a04221abb8d8bf976be0e2/FLAGdc6c19e67 [2018-10-22 15:50:44,630 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9e7af6f6/0d8690a5e6a04221abb8d8bf976be0e2 [2018-10-22 15:50:44,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:50:44,641 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:50:44,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:50:44,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:50:44,647 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:50:44,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132f5518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44, skipping insertion in model container [2018-10-22 15:50:44,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:50:44,682 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:50:44,854 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:50:44,859 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:50:44,877 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:50:44,894 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:50:44,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44 WrapperNode [2018-10-22 15:50:44,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:50:44,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:50:44,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:50:44,896 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:50:44,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:50:44,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:50:44,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:50:44,936 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:50:44,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... [2018-10-22 15:50:44,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:50:44,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:50:44,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:50:44,962 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:50:44,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-22 15:50:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:50:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:50:45,291 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:50:45,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:50:45 BoogieIcfgContainer [2018-10-22 15:50:45,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:50:45,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:50:45,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:50:45,296 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:50:45,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:50:44" (1/3) ... [2018-10-22 15:50:45,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10992b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:50:45, skipping insertion in model container [2018-10-22 15:50:45,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:44" (2/3) ... [2018-10-22 15:50:45,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10992b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:50:45, skipping insertion in model container [2018-10-22 15:50:45,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:50:45" (3/3) ... [2018-10-22 15:50:45,304 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant_true-unreach-call_true-termination.i [2018-10-22 15:50:45,312 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:50:45,320 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:50:45,338 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:50:45,368 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:50:45,369 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:50:45,369 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:50:45,369 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:50:45,369 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:50:45,369 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:50:45,369 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:50:45,369 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:50:45,369 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:50:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-22 15:50:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-22 15:50:45,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:45,388 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-22 15:50:45,391 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:45,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash 889540490, now seen corresponding path program 1 times [2018-10-22 15:50:45,399 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:45,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:45,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:45,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:45,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:45,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:50:45,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 15:50:45,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:50:45,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:50:45,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:50:45,673 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-10-22 15:50:45,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:45,785 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2018-10-22 15:50:45,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:50:45,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-22 15:50:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:45,798 INFO L225 Difference]: With dead ends: 35 [2018-10-22 15:50:45,798 INFO L226 Difference]: Without dead ends: 16 [2018-10-22 15:50:45,802 INFO L605 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 [2018-10-22 15:50:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-22 15:50:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2018-10-22 15:50:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-22 15:50:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-22 15:50:45,841 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2018-10-22 15:50:45,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:45,842 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-22 15:50:45,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:50:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-22 15:50:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 15:50:45,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:45,843 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:45,844 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:45,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:45,844 INFO L82 PathProgramCache]: Analyzing trace with hash -192795628, now seen corresponding path program 1 times [2018-10-22 15:50:45,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:45,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:45,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:45,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:45,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:46,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:50:46,042 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-22 15:50:46,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:46,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:50:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:46,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:50:46,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-10-22 15:50:46,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 15:50:46,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 15:50:46,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:50:46,137 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-10-22 15:50:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:46,287 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-22 15:50:46,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:50:46,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-22 15:50:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:46,288 INFO L225 Difference]: With dead ends: 23 [2018-10-22 15:50:46,288 INFO L226 Difference]: Without dead ends: 21 [2018-10-22 15:50:46,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:50:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-22 15:50:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2018-10-22 15:50:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-22 15:50:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-22 15:50:46,295 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2018-10-22 15:50:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:46,296 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-22 15:50:46,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 15:50:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-22 15:50:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-22 15:50:46,297 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:46,297 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2018-10-22 15:50:46,297 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:46,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:46,298 INFO L82 PathProgramCache]: Analyzing trace with hash -668232246, now seen corresponding path program 2 times [2018-10-22 15:50:46,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:46,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:46,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:46,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:46,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:46,647 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:50:46,647 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-22 15:50:46,661 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:50:46,683 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:50:46,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:50:46,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:50:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:46,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:50:46,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2018-10-22 15:50:46,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-22 15:50:46,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-22 15:50:46,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-22 15:50:46,807 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2018-10-22 15:50:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:47,116 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-10-22 15:50:47,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:50:47,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2018-10-22 15:50:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:47,118 INFO L225 Difference]: With dead ends: 26 [2018-10-22 15:50:47,118 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:50:47,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2018-10-22 15:50:47,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:50:47,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:50:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:50:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:50:47,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-10-22 15:50:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:47,121 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:50:47,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-22 15:50:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:50:47,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:50:47,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:50:47,300 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:50:47,301 INFO L428 ceAbstractionStarter]: At program point L15(lines 10 16) the Hoare annotation is: true [2018-10-22 15:50:47,301 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:50:47,301 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:50:47,302 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:50:47,302 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:50:47,302 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:50:47,302 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2018-10-22 15:50:47,302 INFO L425 ceAbstractionStarter]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2018-10-22 15:50:47,303 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 14) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 0) (and (<= ULTIMATE.start_main_~i~0 1000000) (= ULTIMATE.start___VERIFIER_assert_~cond 1))) [2018-10-22 15:50:47,303 INFO L425 ceAbstractionStarter]: For program point L12-5(lines 12 14) no Hoare annotation was computed. [2018-10-22 15:50:47,303 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:50:47,303 INFO L421 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_main_~i~0 999999)) [2018-10-22 15:50:47,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:50:47 BoogieIcfgContainer [2018-10-22 15:50:47,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:50:47,316 INFO L168 Benchmark]: Toolchain (without parser) took 2675.92 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -670.2 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2018-10-22 15:50:47,319 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. [2018-10-22 15:50:47,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.72 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. [2018-10-22 15:50:47,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.95 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. [2018-10-22 15:50:47,321 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 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. [2018-10-22 15:50:47,322 INFO L168 Benchmark]: RCFGBuilder took 330.20 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-22 15:50:47,324 INFO L168 Benchmark]: TraceAbstraction took 2023.03 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 89.2 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2018-10-22 15:50:47,330 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 252.72 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 39.95 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 25.37 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 330.20 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2023.03 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 89.2 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: cond == 1 && i <= 999999 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: i <= 0 || (i <= 1000000 && cond == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 68 SDslu, 56 SDs, 0 SdLazy, 37 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 19 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 106 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 1810 SizeOfPredicates, 6 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 4/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...