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/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:05:11,929 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:05:11,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:05:11,943 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:05:11,944 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:05:11,945 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:05:11,946 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:05:11,948 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:05:11,950 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:05:11,951 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:05:11,952 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:05:11,952 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:05:11,953 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:05:11,954 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:05:11,956 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:05:11,956 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:05:11,957 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:05:11,959 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:05:11,961 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:05:11,963 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:05:11,964 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:05:11,966 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:05:11,968 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:05:11,978 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 12:05:11,994 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:05:11,995 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:05:11,996 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:05:11,996 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:05:11,996 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:05:11,996 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:05:11,997 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:05:11,997 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:05:11,997 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:05:11,997 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:05:11,998 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:05:11,998 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:05:11,999 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:05:11,999 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:05:11,999 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:05:11,999 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:05:12,000 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:05:12,000 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:05:12,000 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:05:12,000 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:05:12,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:05:12,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:05:12,001 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:05:12,001 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:05:12,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:05:12,002 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:05:12,002 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:05:12,002 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:05:12,003 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:05:12,003 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:05:12,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:05:12,003 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:05:12,003 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:05:12,004 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:05:12,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:05:12,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:05:12,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:05:12,073 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:05:12,074 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:05:12,075 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i [2018-10-24 12:05:12,138 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5b8dc77d/0f768ba2d8ea4d9a96dfa037d531480c/FLAG4f734a63b [2018-10-24 12:05:12,582 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:05:12,584 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i [2018-10-24 12:05:12,593 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5b8dc77d/0f768ba2d8ea4d9a96dfa037d531480c/FLAG4f734a63b [2018-10-24 12:05:12,616 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5b8dc77d/0f768ba2d8ea4d9a96dfa037d531480c [2018-10-24 12:05:12,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:05:12,630 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:05:12,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:05:12,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:05:12,638 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:05:12,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4599f062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12, skipping insertion in model container [2018-10-24 12:05:12,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:05:12,679 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:05:12,853 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:05:12,860 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:05:12,878 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:05:12,896 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:05:12,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12 WrapperNode [2018-10-24 12:05:12,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:05:12,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:05:12,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:05:12,899 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:05:12,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:05:12,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:05:12,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:05:12,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:05:12,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (1/1) ... [2018-10-24 12:05:12,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:05:12,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:05:12,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:05:12,952 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:05:12,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (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 [2018-10-24 12:05:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:05:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:05:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2018-10-24 12:05:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2018-10-24 12:05:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:05:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:05:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:05:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:05:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:05:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:05:13,409 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:05:13,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:13 BoogieIcfgContainer [2018-10-24 12:05:13,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:05:13,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:05:13,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:05:13,415 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:05:13,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:05:12" (1/3) ... [2018-10-24 12:05:13,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9cb7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:05:13, skipping insertion in model container [2018-10-24 12:05:13,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:12" (2/3) ... [2018-10-24 12:05:13,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9cb7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:05:13, skipping insertion in model container [2018-10-24 12:05:13,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:13" (3/3) ... [2018-10-24 12:05:13,419 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4_false-unreach-call_true-termination.i [2018-10-24 12:05:13,430 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:05:13,446 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:05:13,473 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:05:13,519 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:05:13,519 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:05:13,519 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:05:13,520 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:05:13,520 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:05:13,520 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:05:13,520 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:05:13,520 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:05:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-24 12:05:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-24 12:05:13,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:13,547 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:05:13,550 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:13,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:13,556 INFO L82 PathProgramCache]: Analyzing trace with hash -337279170, now seen corresponding path program 1 times [2018-10-24 12:05:13,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:13,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:13,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:05:13,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:13,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:05:13,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:13,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:05:13,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:05:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:05:13,702 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-24 12:05:13,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:13,736 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2018-10-24 12:05:13,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:05:13,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-24 12:05:13,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:13,748 INFO L225 Difference]: With dead ends: 39 [2018-10-24 12:05:13,749 INFO L226 Difference]: Without dead ends: 19 [2018-10-24 12:05:13,753 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 [2018-10-24 12:05:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-24 12:05:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-24 12:05:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-24 12:05:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-24 12:05:13,795 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2018-10-24 12:05:13,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:13,795 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-24 12:05:13,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:05:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-24 12:05:13,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 12:05:13,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:13,797 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:05:13,797 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:13,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:13,799 INFO L82 PathProgramCache]: Analyzing trace with hash 672764537, now seen corresponding path program 1 times [2018-10-24 12:05:13,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:13,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:13,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:13,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:05:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:05:13,848 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-24 12:05:13,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:05:13 BoogieIcfgContainer [2018-10-24 12:05:13,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:05:13,876 INFO L168 Benchmark]: Toolchain (without parser) took 1246.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:05:13,878 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-24 12:05:13,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.33 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. [2018-10-24 12:05:13,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.16 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. [2018-10-24 12:05:13,880 INFO L168 Benchmark]: Boogie Preprocessor took 27.09 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. [2018-10-24 12:05:13,881 INFO L168 Benchmark]: RCFGBuilder took 459.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:13,883 INFO L168 Benchmark]: TraceAbstraction took 463.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:13,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 266.33 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 25.16 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. * Boogie Preprocessor took 27.09 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 459.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 463.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x=0; VAL [\old(x)=2, x=0] [L24] COND TRUE 1 VAL [\old(x)=0, x=0] [L26] CALL eval() VAL [\old(x)=0, x=0] [L14] COND TRUE 1 [L15] RET x=1 VAL [\old(x)=0, x=1] [L26] eval() VAL [\old(x)=0, x=1] [L27] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=1] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=1] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...