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/loops/trex04_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:22:15,137 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:22:15,140 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:22:15,154 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:22:15,155 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:22:15,156 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:22:15,157 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:22:15,160 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:22:15,162 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:22:15,163 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:22:15,164 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:22:15,164 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:22:15,165 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:22:15,166 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:22:15,167 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:22:15,167 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:22:15,168 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:22:15,170 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:22:15,172 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:22:15,174 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:22:15,175 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:22:15,176 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:22:15,179 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:22:15,191 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 [2018-10-26 22:22:15,219 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:22:15,219 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:22:15,223 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:22:15,223 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:22:15,224 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:22:15,224 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:22:15,224 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:22:15,224 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:22:15,225 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:22:15,228 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:22:15,228 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:22:15,228 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:22:15,228 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:22:15,228 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:22:15,229 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:22:15,229 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:22:15,229 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:22:15,229 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:22:15,229 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:22:15,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:22:15,231 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:22:15,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:22:15,231 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:22:15,232 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:22:15,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:22:15,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:22:15,232 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:22:15,232 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:22:15,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:22:15,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:22:15,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:22:15,304 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:22:15,305 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:22:15,306 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/trex04_true-unreach-call_false-termination.i [2018-10-26 22:22:15,362 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e95c9f320/c6dd075822af452892e47dafa3270aa8/FLAGe37e4884a [2018-10-26 22:22:15,799 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:22:15,799 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04_true-unreach-call_false-termination.i [2018-10-26 22:22:15,806 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e95c9f320/c6dd075822af452892e47dafa3270aa8/FLAGe37e4884a [2018-10-26 22:22:15,830 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e95c9f320/c6dd075822af452892e47dafa3270aa8 [2018-10-26 22:22:15,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:22:15,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:22:15,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:22:15,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:22:15,851 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:22:15,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:22:15" (1/1) ... [2018-10-26 22:22:15,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:15, skipping insertion in model container [2018-10-26 22:22:15,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:22:15" (1/1) ... [2018-10-26 22:22:15,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:22:15,894 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:22:16,066 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:22:16,069 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:22:16,094 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:22:16,111 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:22:16,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16 WrapperNode [2018-10-26 22:22:16,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:22:16,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:22:16,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:22:16,113 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:22:16,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:22:16,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:22:16,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:22:16,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:22:16,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (1/1) ... [2018-10-26 22:22:16,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:22:16,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:22:16,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:22:16,175 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:22:16,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (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 [2018-10-26 22:22:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-26 22:22:16,304 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-26 22:22:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:22:16,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:22:16,767 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:22:16,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:22:16 BoogieIcfgContainer [2018-10-26 22:22:16,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:22:16,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:22:16,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:22:16,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:22:16,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:22:15" (1/3) ... [2018-10-26 22:22:16,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0cd75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:22:16, skipping insertion in model container [2018-10-26 22:22:16,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:22:16" (2/3) ... [2018-10-26 22:22:16,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0cd75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:22:16, skipping insertion in model container [2018-10-26 22:22:16,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:22:16" (3/3) ... [2018-10-26 22:22:16,776 INFO L112 eAbstractionObserver]: Analyzing ICFG trex04_true-unreach-call_false-termination.i [2018-10-26 22:22:16,786 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:22:16,794 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:22:16,810 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:22:16,838 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:22:16,838 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:22:16,838 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:22:16,838 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:22:16,839 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:22:16,839 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:22:16,839 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:22:16,839 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:22:16,839 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:22:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-26 22:22:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 22:22:16,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:22:16,865 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:22:16,867 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:22:16,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:22:16,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2130484720, now seen corresponding path program 1 times [2018-10-26 22:22:16,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:22:16,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:22:16,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:22:16,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:22:16,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:22:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:22:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:22:17,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:22:17,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:22:17,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:22:17,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:22:17,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:22:17,023 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-26 22:22:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:22:17,046 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2018-10-26 22:22:17,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:22:17,047 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-26 22:22:17,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:22:17,057 INFO L225 Difference]: With dead ends: 33 [2018-10-26 22:22:17,057 INFO L226 Difference]: Without dead ends: 21 [2018-10-26 22:22:17,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:22:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-26 22:22:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-26 22:22:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 22:22:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2018-10-26 22:22:17,098 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 12 [2018-10-26 22:22:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:22:17,098 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-10-26 22:22:17,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:22:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2018-10-26 22:22:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 22:22:17,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:22:17,100 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:22:17,100 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:22:17,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:22:17,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1628086673, now seen corresponding path program 1 times [2018-10-26 22:22:17,101 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:22:17,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:22:17,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:22:17,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:22:17,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:22:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:22:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:22:17,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:22:17,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:22:17,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:22:17,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:22:17,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:22:17,192 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 4 states. [2018-10-26 22:22:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:22:17,264 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2018-10-26 22:22:17,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:22:17,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-26 22:22:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:22:17,265 INFO L225 Difference]: With dead ends: 21 [2018-10-26 22:22:17,265 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:22:17,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:22:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:22:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:22:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:22:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:22:17,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-26 22:22:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:22:17,267 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:22:17,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:22:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:22:17,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:22:17,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:22:17,328 INFO L425 ceAbstractionStarter]: For program point fooEXIT(lines 11 18) no Hoare annotation was computed. [2018-10-26 22:22:17,329 INFO L428 ceAbstractionStarter]: At program point fooENTRY(lines 11 18) the Hoare annotation is: true [2018-10-26 22:22:17,329 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-26 22:22:17,329 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 11 18) no Hoare annotation was computed. [2018-10-26 22:22:17,329 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 12 18) no Hoare annotation was computed. [2018-10-26 22:22:17,329 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-26 22:22:17,330 INFO L428 ceAbstractionStarter]: At program point L19(lines 19 35) the Hoare annotation is: true [2018-10-26 22:22:17,330 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-26 22:22:17,330 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-26 22:22:17,330 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-26 22:22:17,330 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:22:17,331 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-10-26 22:22:17,331 INFO L428 ceAbstractionStarter]: At program point L28-1(line 28) the Hoare annotation is: true [2018-10-26 22:22:17,331 INFO L425 ceAbstractionStarter]: For program point L28-3(lines 20 35) no Hoare annotation was computed. [2018-10-26 22:22:17,331 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-26 22:22:17,331 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-26 22:22:17,331 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:22:17,332 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-10-26 22:22:17,333 INFO L425 ceAbstractionStarter]: For program point L25-2(lines 20 35) no Hoare annotation was computed. [2018-10-26 22:22:17,333 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-26 22:22:17,333 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 33) no Hoare annotation was computed. [2018-10-26 22:22:17,334 INFO L425 ceAbstractionStarter]: For program point L30-2(lines 20 35) no Hoare annotation was computed. [2018-10-26 22:22:17,334 INFO L425 ceAbstractionStarter]: For program point L30-3(lines 30 33) no Hoare annotation was computed. [2018-10-26 22:22:17,334 INFO L428 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: true [2018-10-26 22:22:17,334 INFO L425 ceAbstractionStarter]: For program point L26-2(line 26) no Hoare annotation was computed. [2018-10-26 22:22:17,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:22:17 BoogieIcfgContainer [2018-10-26 22:22:17,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:22:17,346 INFO L168 Benchmark]: Toolchain (without parser) took 1503.05 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -706.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:22:17,348 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-26 22:22:17,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.16 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. [2018-10-26 22:22:17,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.05 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. [2018-10-26 22:22:17,352 INFO L168 Benchmark]: Boogie Preprocessor took 28.16 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. [2018-10-26 22:22:17,352 INFO L168 Benchmark]: RCFGBuilder took 593.73 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -747.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:22:17,354 INFO L168 Benchmark]: TraceAbstraction took 575.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:22:17,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 267.16 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 33.05 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 28.16 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 593.73 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -747.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 575.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 1 SDslu, 46 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 5 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...