java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:19:26,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:19:26,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:19:26,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:19:26,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:19:26,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:19:26,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:19:26,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:19:26,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:19:26,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:19:26,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:19:26,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:19:26,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:19:26,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:19:26,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:19:26,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:19:26,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:19:26,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:19:26,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:19:26,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:19:26,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:19:26,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:19:26,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:19:26,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:19:26,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 11:19:26,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 11:19:26,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 11:19:26,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 11:19:26,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 11:19:26,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 11:19:26,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:19:26,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:19:26,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:19:26,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:19:26,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:19:26,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:19:26,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:19:26,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:19:26,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:19:26,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:19:26,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:19:26,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 11:19:26,689 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:19:26,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:19:26,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:19:26,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:19:26,691 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:19:26,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:19:26,692 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:19:26,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:19:26,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:19:26,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:19:26,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:19:26,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:19:26,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:19:26,693 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:19:26,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:19:26,693 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:19:26,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:19:26,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:19:26,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:19:26,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:19:26,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:19:26,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:19:26,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:19:26,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:19:26,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:19:26,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:19:26,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:19:26,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:19:26,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:19:26,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:19:26,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:19:26,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:19:26,741 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:19:26,742 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:19:26,742 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2019-10-02 11:19:26,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ff7e97c/8f90b8405d6640f28d036711c047a5e9/FLAGc6bceedf8 [2019-10-02 11:19:27,238 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:19:27,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2019-10-02 11:19:27,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ff7e97c/8f90b8405d6640f28d036711c047a5e9/FLAGc6bceedf8 [2019-10-02 11:19:27,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ff7e97c/8f90b8405d6640f28d036711c047a5e9 [2019-10-02 11:19:27,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:19:27,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:19:27,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:19:27,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:19:27,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:19:27,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:27,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3457a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27, skipping insertion in model container [2019-10-02 11:19:27,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:27,682 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:19:27,700 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:19:27,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:19:27,923 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:19:27,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:19:27,965 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:19:27,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27 WrapperNode [2019-10-02 11:19:27,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:19:27,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:19:27,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:19:27,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:19:28,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:28,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:28,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:28,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:28,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:28,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:28,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (1/1) ... [2019-10-02 11:19:28,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:19:28,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:19:28,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:19:28,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:19:28,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (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 [2019-10-02 11:19:28,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:19:28,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:19:28,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:19:28,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:19:28,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 11:19:28,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:19:28,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 11:19:28,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:19:28,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:19:28,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:19:28,316 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:19:28,316 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-02 11:19:28,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:19:28 BoogieIcfgContainer [2019-10-02 11:19:28,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:19:28,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:19:28,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:19:28,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:19:28,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:19:27" (1/3) ... [2019-10-02 11:19:28,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c434260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:19:28, skipping insertion in model container [2019-10-02 11:19:28,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:27" (2/3) ... [2019-10-02 11:19:28,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c434260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:19:28, skipping insertion in model container [2019-10-02 11:19:28,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:19:28" (3/3) ... [2019-10-02 11:19:28,326 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2019-10-02 11:19:28,336 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:19:28,345 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:19:28,363 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:19:28,417 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:19:28,421 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:19:28,421 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:19:28,421 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:19:28,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:19:28,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:19:28,422 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:19:28,422 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:19:28,422 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:19:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-02 11:19:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-02 11:19:28,463 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:19:28,464 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:19:28,466 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:19:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:19:28,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2019-10-02 11:19:28,477 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:19:28,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:19:28,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:19:28,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:19:28,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:19:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:19:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:19:28,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:19:28,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 11:19:28,663 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 11:19:28,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 11:19:28,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:19:28,680 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-10-02 11:19:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:19:28,715 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-10-02 11:19:28,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 11:19:28,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-02 11:19:28,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:19:28,727 INFO L225 Difference]: With dead ends: 26 [2019-10-02 11:19:28,727 INFO L226 Difference]: Without dead ends: 13 [2019-10-02 11:19:28,731 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:19:28,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-02 11:19:28,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-02 11:19:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-02 11:19:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-02 11:19:28,768 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-02 11:19:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:19:28,769 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-02 11:19:28,769 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 11:19:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-02 11:19:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-02 11:19:28,770 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:19:28,770 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:19:28,771 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:19:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:19:28,771 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2019-10-02 11:19:28,772 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:19:28,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:19:28,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:19:28,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:19:28,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:19:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:19:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:19:28,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:19:28,878 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:19:28,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:19:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:19:28,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-02 11:19:28,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:19:28,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:19:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:19:29,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 11:19:29,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-10-02 11:19:29,004 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 11:19:29,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 11:19:29,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-02 11:19:29,005 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2019-10-02 11:19:29,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:19:29,083 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-10-02 11:19:29,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 11:19:29,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-10-02 11:19:29,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:19:29,084 INFO L225 Difference]: With dead ends: 15 [2019-10-02 11:19:29,084 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:19:29,086 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-02 11:19:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:19:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:19:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:19:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:19:29,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-02 11:19:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:19:29,088 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:19:29,088 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 11:19:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:19:29,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:19:29,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:19:29,137 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:19:29,138 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:19:29,138 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:19:29,139 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:19:29,139 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 11:19:29,139 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:19:29,139 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:19:29,140 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-10-02 11:19:29,140 INFO L439 ceAbstractionStarter]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ main_~main__x~0 2) main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2019-10-02 11:19:29,141 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 8 55) the Hoare annotation is: true [2019-10-02 11:19:29,141 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 55) no Hoare annotation was computed. [2019-10-02 11:19:29,142 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2019-10-02 11:19:29,142 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2019-10-02 11:19:29,142 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 55) no Hoare annotation was computed. [2019-10-02 11:19:29,144 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-10-02 11:19:29,144 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-10-02 11:19:29,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:19:29 BoogieIcfgContainer [2019-10-02 11:19:29,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:19:29,167 INFO L168 Benchmark]: Toolchain (without parser) took 1502.58 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 88.3 MB in the beginning and 122.2 MB in the end (delta: -33.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:29,168 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 106.5 MB in the beginning and 106.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:19:29,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.07 ms. Allocated memory is still 140.5 MB. Free memory was 87.9 MB in the beginning and 78.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:29,171 INFO L168 Benchmark]: Boogie Preprocessor took 117.65 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 78.6 MB in the beginning and 177.3 MB in the end (delta: -98.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:29,172 INFO L168 Benchmark]: RCFGBuilder took 233.06 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 165.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:29,173 INFO L168 Benchmark]: TraceAbstraction took 845.31 ms. Allocated memory is still 199.8 MB. Free memory was 165.9 MB in the beginning and 122.2 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:29,177 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 106.5 MB in the beginning and 106.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.07 ms. Allocated memory is still 140.5 MB. Free memory was 87.9 MB in the beginning and 78.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.65 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 78.6 MB in the beginning and 177.3 MB in the end (delta: -98.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.06 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 165.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 845.31 ms. Allocated memory is still 199.8 MB. Free memory was 165.9 MB in the beginning and 122.2 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 6 SDslu, 37 SDs, 0 SdLazy, 18 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 737 SizeOfPredicates, 4 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...