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/trex02_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:08:59,726 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:08:59,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:08:59,741 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:08:59,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:08:59,743 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:08:59,744 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:08:59,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:08:59,751 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:08:59,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:08:59,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:08:59,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:08:59,756 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:08:59,761 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:08:59,762 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:08:59,767 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:08:59,768 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:08:59,770 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:08:59,773 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:08:59,774 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:08:59,776 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:08:59,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:08:59,780 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:08:59,790 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 12:08:59,806 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:08:59,807 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:08:59,808 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:08:59,808 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:08:59,808 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:08:59,808 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:08:59,808 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:08:59,809 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:08:59,809 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:08:59,809 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:08:59,809 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:08:59,809 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:08:59,810 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:08:59,810 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:08:59,811 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:08:59,811 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:08:59,811 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:08:59,811 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:08:59,811 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:08:59,812 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:08:59,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:08:59,812 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:08:59,812 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:08:59,813 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:08:59,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:08:59,813 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:08:59,813 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:08:59,813 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:08:59,814 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:08:59,814 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:08:59,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:08:59,814 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:08:59,814 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:08:59,815 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:08:59,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:08:59,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:08:59,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:08:59,882 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:08:59,883 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:08:59,884 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/trex02_true-unreach-call_true-termination.i [2018-10-24 12:08:59,939 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0dc890281/71c98b4da1c74cf4a510a694ca0cac7e/FLAG8cb84e161 [2018-10-24 12:09:00,465 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:09:00,466 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02_true-unreach-call_true-termination.i [2018-10-24 12:09:00,474 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0dc890281/71c98b4da1c74cf4a510a694ca0cac7e/FLAG8cb84e161 [2018-10-24 12:09:00,489 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0dc890281/71c98b4da1c74cf4a510a694ca0cac7e [2018-10-24 12:09:00,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:09:00,502 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:09:00,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:09:00,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:09:00,508 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:09:00,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6209f138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00, skipping insertion in model container [2018-10-24 12:09:00,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:09:00,546 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:09:00,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:09:00,749 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:09:00,766 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:09:00,782 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:09:00,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00 WrapperNode [2018-10-24 12:09:00,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:09:00,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:09:00,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:09:00,784 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:09:00,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:09:00,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:09:00,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:09:00,809 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:09:00,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (1/1) ... [2018-10-24 12:09:00,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:09:00,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:09:00,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:09:00,838 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:09:00,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (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 12:09:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:09:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:09:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-24 12:09:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-24 12:09:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:09:00,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:09:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:09:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:09:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:09:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:09:01,228 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:09:01,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:09:01 BoogieIcfgContainer [2018-10-24 12:09:01,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:09:01,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:09:01,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:09:01,234 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:09:01,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:09:00" (1/3) ... [2018-10-24 12:09:01,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1436d6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:09:01, skipping insertion in model container [2018-10-24 12:09:01,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:00" (2/3) ... [2018-10-24 12:09:01,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1436d6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:09:01, skipping insertion in model container [2018-10-24 12:09:01,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:09:01" (3/3) ... [2018-10-24 12:09:01,242 INFO L112 eAbstractionObserver]: Analyzing ICFG trex02_true-unreach-call_true-termination.i [2018-10-24 12:09:01,263 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:09:01,274 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:09:01,322 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:09:01,376 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:09:01,376 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:09:01,376 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:09:01,376 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:09:01,377 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:09:01,377 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:09:01,377 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:09:01,377 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:09:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-24 12:09:01,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 12:09:01,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:09:01,403 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:09:01,405 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:09:01,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:09:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1587168562, now seen corresponding path program 1 times [2018-10-24 12:09:01,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:09:01,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:09:01,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:09:01,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:09:01,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:09:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:09:01,546 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 12:09:01,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:09:01,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:09:01,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:09:01,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:09:01,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:09:01,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:09:01,568 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-24 12:09:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:09:01,594 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-10-24 12:09:01,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:09:01,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-24 12:09:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:09:01,609 INFO L225 Difference]: With dead ends: 36 [2018-10-24 12:09:01,609 INFO L226 Difference]: Without dead ends: 19 [2018-10-24 12:09:01,613 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 12:09:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-24 12:09:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-24 12:09:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-24 12:09:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-24 12:09:01,657 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-10-24 12:09:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:09:01,658 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-24 12:09:01,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:09:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-24 12:09:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 12:09:01,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:09:01,662 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:09:01,662 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:09:01,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:09:01,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1847555599, now seen corresponding path program 1 times [2018-10-24 12:09:01,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:09:01,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:09:01,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:09:01,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:09:01,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:09:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:09:01,784 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 12:09:01,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:09:01,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:09:01,785 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:09:01,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:09:01,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:09:01,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:09:01,788 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-10-24 12:09:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:09:01,901 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-10-24 12:09:01,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:09:01,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-24 12:09:01,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:09:01,904 INFO L225 Difference]: With dead ends: 19 [2018-10-24 12:09:01,904 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 12:09:01,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:09:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 12:09:01,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 12:09:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 12:09:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 12:09:01,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-10-24 12:09:01,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:09:01,907 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 12:09:01,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:09:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 12:09:01,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 12:09:01,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 12:09:01,989 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:09:01,990 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:09:01,990 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:09:01,991 INFO L425 ceAbstractionStarter]: For program point fooEXIT(lines 11 13) no Hoare annotation was computed. [2018-10-24 12:09:01,991 INFO L428 ceAbstractionStarter]: At program point fooENTRY(lines 11 13) the Hoare annotation is: true [2018-10-24 12:09:01,992 INFO L425 ceAbstractionStarter]: For program point fooFINAL(lines 11 13) no Hoare annotation was computed. [2018-10-24 12:09:01,992 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:09:01,992 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2018-10-24 12:09:01,992 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:09:01,993 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:09:01,993 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 14 22) the Hoare annotation is: (or (< 0 |old(~x~0)|) (<= ~x~0 0)) [2018-10-24 12:09:01,993 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 22) no Hoare annotation was computed. [2018-10-24 12:09:01,993 INFO L428 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: true [2018-10-24 12:09:01,994 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2018-10-24 12:09:01,994 INFO L428 ceAbstractionStarter]: At program point L19-1(lines 16 20) the Hoare annotation is: true [2018-10-24 12:09:01,994 INFO L428 ceAbstractionStarter]: At program point L18-1(line 18) the Hoare annotation is: true [2018-10-24 12:09:01,994 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-10-24 12:09:01,995 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (or (< 0 |old(~x~0)|) (<= ~x~0 0)) [2018-10-24 12:09:01,995 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 22) no Hoare annotation was computed. [2018-10-24 12:09:01,995 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-10-24 12:09:01,995 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-10-24 12:09:01,995 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-10-24 12:09:01,995 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-24 12:09:01,996 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-24 12:09:01,996 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-24 12:09:02,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:09:02 BoogieIcfgContainer [2018-10-24 12:09:02,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:09:02,004 INFO L168 Benchmark]: Toolchain (without parser) took 1502.32 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -727.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:09:02,006 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. [2018-10-24 12:09:02,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.03 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-24 12:09:02,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.78 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 12:09:02,008 INFO L168 Benchmark]: Boogie Preprocessor took 28.19 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 12:09:02,009 INFO L168 Benchmark]: RCFGBuilder took 391.95 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-10-24 12:09:02,010 INFO L168 Benchmark]: TraceAbstraction took 772.45 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2018-10-24 12:09:02,015 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 280.03 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 24.78 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 28.19 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. * RCFGBuilder took 391.95 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 772.45 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 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: 4]: 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: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 6 SDslu, 44 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 10 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 26 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 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...