java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:06:14,788 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:06:14,790 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:06:14,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:06:14,803 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:06:14,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:06:14,805 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:06:14,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:06:14,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:06:14,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:06:14,811 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:06:14,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:06:14,812 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:06:14,813 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:06:14,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:06:14,815 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:06:14,816 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:06:14,818 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:06:14,820 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:06:14,822 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:06:14,823 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:06:14,824 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:06:14,827 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 18:06:14,836 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 18:06:14,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:06:14,856 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:06:14,857 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:06:14,857 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:06:14,857 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:06:14,858 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:06:14,858 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:06:14,858 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:06:14,858 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:06:14,858 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:06:14,859 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:06:14,859 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:06:14,860 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:06:14,860 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:06:14,860 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:06:14,860 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:06:14,860 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:06:14,861 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:06:14,861 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:06:14,861 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:06:14,861 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:06:14,861 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:06:14,862 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:06:14,862 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:06:14,862 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:06:14,862 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:06:14,862 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:06:14,863 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:06:14,863 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:06:14,863 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:06:14,863 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:06:14,863 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:06:14,864 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:06:14,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:06:14,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:06:14,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:06:14,928 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:06:14,929 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:06:14,930 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-07-23 18:06:15,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf9831849/fbca3a372c8041e48ed95a7a5855bc1c/FLAGf50abd3a3 [2018-07-23 18:06:15,433 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:06:15,434 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-07-23 18:06:15,440 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf9831849/fbca3a372c8041e48ed95a7a5855bc1c/FLAGf50abd3a3 [2018-07-23 18:06:15,455 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf9831849/fbca3a372c8041e48ed95a7a5855bc1c [2018-07-23 18:06:15,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:06:15,468 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:06:15,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:06:15,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:06:15,476 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:06:15,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b63ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15, skipping insertion in model container [2018-07-23 18:06:15,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,640 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:06:15,687 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:06:15,707 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:06:15,717 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:06:15,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15 WrapperNode [2018-07-23 18:06:15,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:06:15,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:06:15,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:06:15,737 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:06:15,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:06:15,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:06:15,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:06:15,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:06:15,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... [2018-07-23 18:06:15,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:06:15,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:06:15,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:06:15,794 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:06:15,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-23 18:06:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:06:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:06:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:06:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:06:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:06:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:06:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assert [2018-07-23 18:06:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assert [2018-07-23 18:06:16,350 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:06:16,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:06:16 BoogieIcfgContainer [2018-07-23 18:06:16,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:06:16,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:06:16,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:06:16,356 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:06:16,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:06:15" (1/3) ... [2018-07-23 18:06:16,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6188a9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:06:16, skipping insertion in model container [2018-07-23 18:06:16,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:15" (2/3) ... [2018-07-23 18:06:16,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6188a9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:06:16, skipping insertion in model container [2018-07-23 18:06:16,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:06:16" (3/3) ... [2018-07-23 18:06:16,362 INFO L112 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1_false-unreach-call_true-termination.i [2018-07-23 18:06:16,386 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:06:16,403 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:06:16,453 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:06:16,454 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:06:16,455 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:06:16,455 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:06:16,455 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:06:16,455 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:06:16,455 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:06:16,455 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:06:16,456 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:06:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-07-23 18:06:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 18:06:16,481 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:16,482 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:16,482 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:16,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1420455248, now seen corresponding path program 1 times [2018-07-23 18:06:16,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:16,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:16,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:16,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:16,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:06:16,612 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:06:16,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 18:06:16,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:16,618 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-23 18:06:16,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-23 18:06:16,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-23 18:06:16,638 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-07-23 18:06:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:16,667 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2018-07-23 18:06:16,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-23 18:06:16,668 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-07-23 18:06:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:16,680 INFO L225 Difference]: With dead ends: 42 [2018-07-23 18:06:16,680 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 18:06:16,684 INFO L573 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 [2018-07-23 18:06:16,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 18:06:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-23 18:06:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-23 18:06:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-07-23 18:06:16,729 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2018-07-23 18:06:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:16,730 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-07-23 18:06:16,730 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-23 18:06:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-07-23 18:06:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 18:06:16,731 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:16,731 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:16,732 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:16,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1573461901, now seen corresponding path program 1 times [2018-07-23 18:06:16,732 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:16,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:16,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:16,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:16,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:06:16,988 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:06:16,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 18:06:16,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:16,990 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 18:06:16,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 18:06:16,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:06:16,991 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2018-07-23 18:06:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:17,246 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-07-23 18:06:17,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 18:06:17,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-07-23 18:06:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:17,249 INFO L225 Difference]: With dead ends: 31 [2018-07-23 18:06:17,249 INFO L226 Difference]: Without dead ends: 28 [2018-07-23 18:06:17,251 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-23 18:06:17,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-23 18:06:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-07-23 18:06:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-23 18:06:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-07-23 18:06:17,262 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2018-07-23 18:06:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:17,262 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-07-23 18:06:17,262 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 18:06:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-07-23 18:06:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-23 18:06:17,263 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:17,264 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:17,264 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:17,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1075995346, now seen corresponding path program 1 times [2018-07-23 18:06:17,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:17,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:17,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:17,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:17,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:06:17,680 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:17,680 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:17,681 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-07-23 18:06:17,683 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [17], [19], [23], [32], [35], [37], [40], [42], [43], [44], [45], [47], [48], [49] [2018-07-23 18:06:17,731 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:06:17,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:06:17,852 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:06:17,854 INFO L272 AbstractInterpreter]: Visited 17 different actions 21 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-07-23 18:06:17,862 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:06:17,953 INFO L232 lantSequenceWeakener]: Weakened 9 states. On average, predicates are now at 66.67% of their original sizes. [2018-07-23 18:06:17,953 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:06:18,344 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:06:18,345 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:06:18,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2018-07-23 18:06:18,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:18,347 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 18:06:18,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 18:06:18,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:06:18,348 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2018-07-23 18:06:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:18,738 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-07-23 18:06:18,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 18:06:18,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-07-23 18:06:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:18,739 INFO L225 Difference]: With dead ends: 44 [2018-07-23 18:06:18,739 INFO L226 Difference]: Without dead ends: 42 [2018-07-23 18:06:18,740 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-07-23 18:06:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-23 18:06:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-07-23 18:06:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-23 18:06:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-07-23 18:06:18,752 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 19 [2018-07-23 18:06:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:18,752 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-07-23 18:06:18,753 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 18:06:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-07-23 18:06:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-23 18:06:18,754 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:18,754 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:18,754 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_for_bounded_loop__false_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:18,755 INFO L82 PathProgramCache]: Analyzing trace with hash 977980684, now seen corresponding path program 1 times [2018-07-23 18:06:18,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:18,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:18,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:18,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:18,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-23 18:06:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-23 18:06:18,798 INFO L419 BasicCegarLoop]: Counterexample might be feasible [2018-07-23 18:06:18,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:06:18 BoogieIcfgContainer [2018-07-23 18:06:18,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 18:06:18,823 INFO L168 Benchmark]: Toolchain (without parser) took 3355.78 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 2.1 GB in the end (delta: -695.2 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2018-07-23 18:06:18,825 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 18:06:18,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.50 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. [2018-07-23 18:06:18,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.80 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. [2018-07-23 18:06:18,827 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 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. [2018-07-23 18:06:18,828 INFO L168 Benchmark]: RCFGBuilder took 563.23 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: -805.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-07-23 18:06:18,829 INFO L168 Benchmark]: TraceAbstraction took 2469.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 99.3 MB). Peak memory consumption was 99.3 MB. Max. memory is 7.1 GB. [2018-07-23 18:06:18,834 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.50 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 25.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.28 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 563.23 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: -805.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2469.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 99.3 MB). Peak memory consumption was 99.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0, x=0, y=0; [L14] int i=0, x=0, y=0; [L14] int i=0, x=0, y=0; [L15] int n=__VERIFIER_nondet_int(); [L16] COND FALSE !(!(n>0)) [L17] i=0 VAL [i=0, n=1, x=0, y=0] [L17] COND TRUE i