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-crafted/simple_vardep_true-unreach-call2_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:46:18,986 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:46:18,988 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:46:19,002 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:46:19,003 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:46:19,004 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:46:19,005 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:46:19,009 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:46:19,010 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:46:19,013 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:46:19,016 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:46:19,017 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:46:19,018 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:46:19,019 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:46:19,028 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:46:19,029 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:46:19,030 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:46:19,031 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:46:19,034 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:46:19,038 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:46:19,039 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:46:19,040 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:46:19,041 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:46:19,056 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 15:46:19,084 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:46:19,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:46:19,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:46:19,085 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:46:19,086 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:46:19,086 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:46:19,086 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:46:19,087 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:46:19,087 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:46:19,087 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:46:19,087 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:46:19,087 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:46:19,088 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:46:19,090 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:46:19,090 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:46:19,091 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:46:19,091 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:46:19,091 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:46:19,091 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:46:19,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:46:19,092 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:46:19,092 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:46:19,092 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:46:19,092 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:46:19,092 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:46:19,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:46:19,094 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:46:19,094 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:46:19,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:46:19,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:46:19,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:46:19,185 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:46:19,186 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:46:19,187 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_true-unreach-call2_true-termination.i [2018-10-22 15:46:19,250 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc821977b/cf711c8f64bc44a280719ef06715e788/FLAG9e57d8823 [2018-10-22 15:46:19,696 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:46:19,696 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_true-unreach-call2_true-termination.i [2018-10-22 15:46:19,702 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc821977b/cf711c8f64bc44a280719ef06715e788/FLAG9e57d8823 [2018-10-22 15:46:19,720 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc821977b/cf711c8f64bc44a280719ef06715e788 [2018-10-22 15:46:19,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:46:19,733 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:46:19,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:46:19,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:46:19,738 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:46:19,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:19,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43178677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19, skipping insertion in model container [2018-10-22 15:46:19,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:19,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:46:19,771 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:46:19,946 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:46:19,951 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:46:19,968 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:46:19,984 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:46:19,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19 WrapperNode [2018-10-22 15:46:19,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:46:19,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:46:19,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:46:19,986 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:46:19,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:46:20,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:46:20,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:46:20,022 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:46:20,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (1/1) ... [2018-10-22 15:46:20,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:46:20,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:46:20,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:46:20,042 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:46:20,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (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 15:46:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:46:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:46:20,323 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:46:20,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:46:20 BoogieIcfgContainer [2018-10-22 15:46:20,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:46:20,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:46:20,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:46:20,328 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:46:20,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:46:19" (1/3) ... [2018-10-22 15:46:20,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf63b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:46:20, skipping insertion in model container [2018-10-22 15:46:20,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:19" (2/3) ... [2018-10-22 15:46:20,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf63b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:46:20, skipping insertion in model container [2018-10-22 15:46:20,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:46:20" (3/3) ... [2018-10-22 15:46:20,332 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_vardep_true-unreach-call2_true-termination.i [2018-10-22 15:46:20,342 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:46:20,349 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:46:20,367 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:46:20,406 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:46:20,407 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:46:20,407 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:46:20,407 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:46:20,407 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:46:20,408 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:46:20,408 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:46:20,408 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:46:20,408 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:46:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2018-10-22 15:46:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-22 15:46:20,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:20,427 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-22 15:46:20,429 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:20,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:20,436 INFO L82 PathProgramCache]: Analyzing trace with hash 889541483, now seen corresponding path program 1 times [2018-10-22 15:46:20,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:20,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:20,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:20,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:20,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:20,789 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-22 15:46:20,819 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 15:46:20,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:46:20,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 15:46:20,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:46:20,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:46:20,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:46:20,842 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2018-10-22 15:46:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:22,943 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2018-10-22 15:46:22,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:46:22,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-22 15:46:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:22,955 INFO L225 Difference]: With dead ends: 32 [2018-10-22 15:46:22,956 INFO L226 Difference]: Without dead ends: 14 [2018-10-22 15:46:22,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:46:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-22 15:46:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2018-10-22 15:46:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-22 15:46:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-22 15:46:22,993 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-10-22 15:46:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:22,993 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-22 15:46:22,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:46:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-22 15:46:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-22 15:46:22,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:22,994 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:22,995 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:22,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash -890808524, now seen corresponding path program 1 times [2018-10-22 15:46:22,995 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:22,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:23,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:23,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:23,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:46:23,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:23,341 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 15:46:23,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:23,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:23,664 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 12 [2018-10-22 15:46:23,919 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 15:46:23,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:46:23,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-10-22 15:46:23,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 15:46:23,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 15:46:23,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:46:23,958 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-10-22 15:46:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:26,136 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-22 15:46:26,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:46:26,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2018-10-22 15:46:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:26,137 INFO L225 Difference]: With dead ends: 14 [2018-10-22 15:46:26,137 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:46:26,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-22 15:46:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:46:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:46:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:46:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:46:26,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-10-22 15:46:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:26,140 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:46:26,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 15:46:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:46:26,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:46:26,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:46:26,328 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-22 15:46:26,505 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-22 15:46:26,508 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:46:26,508 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2018-10-22 15:46:26,508 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 26) the Hoare annotation is: (let ((.cse3 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse1 (<= .cse3 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~j~0 .cse3))) (or (let ((.cse0 (* 3 ULTIMATE.start_main_~i~0))) (and (<= ULTIMATE.start_main_~k~0 .cse0) (<= .cse0 ULTIMATE.start_main_~k~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2)) (and (= ULTIMATE.start_main_~k~0 0) .cse1 (= ULTIMATE.start_main_~j~0 0) .cse2)))) [2018-10-22 15:46:26,509 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 28) no Hoare annotation was computed. [2018-10-22 15:46:26,509 INFO L425 ceAbstractionStarter]: For program point L9(lines 9 11) no Hoare annotation was computed. [2018-10-22 15:46:26,509 INFO L421 ceAbstractionStarter]: At program point L9-2(lines 7 13) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~i~0)) (.cse1 (* 2 ULTIMATE.start_main_~i~0))) (and (<= ULTIMATE.start_main_~k~0 .cse0) (<= .cse0 ULTIMATE.start_main_~k~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= .cse1 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 .cse1))) [2018-10-22 15:46:26,509 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-10-22 15:46:26,509 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:46:26,510 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:46:26,510 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:46:26,510 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-10-22 15:46:26,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:46:26 BoogieIcfgContainer [2018-10-22 15:46:26,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:46:26,528 INFO L168 Benchmark]: Toolchain (without parser) took 6796.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -707.8 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2018-10-22 15:46:26,529 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:46:26,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.37 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 15:46:26,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.70 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 15:46:26,532 INFO L168 Benchmark]: Boogie Preprocessor took 20.46 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 15:46:26,532 INFO L168 Benchmark]: RCFGBuilder took 282.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:46:26,533 INFO L168 Benchmark]: TraceAbstraction took 6202.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 79.6 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:46:26,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.37 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 35.70 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 20.46 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 282.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6202.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 79.6 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 7]: Loop Invariant Derived loop invariant: (((k <= 3 * i && 3 * i <= k) && 1 == cond) && 2 * i <= j) && j <= 2 * i - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((k <= 3 * i && 3 * i <= k) && 1 == cond) && 2 * i <= j) && j <= 2 * i) || (((k == 0 && 2 * i <= j) && j == 0) && j <= 2 * i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. SAFE Result, 6.1s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 21 SDslu, 31 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 66 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 2098 SizeOfPredicates, 7 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...