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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:29:53,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:29:53,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:29:53,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:29:53,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:29:53,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:29:53,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:29:53,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:29:53,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:29:53,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:29:53,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:29:53,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:29:53,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:29:53,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:29:53,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:29:53,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:29:53,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:29:53,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:29:53,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:29:53,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:29:53,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:29:53,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:29:53,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:29:53,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:29:53,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 13:29:53,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:29:53,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:29:53,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:29:53,920 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 [2019-10-07 13:29:53,941 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:29:53,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:29:53,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:29:53,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:29:53,943 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:29:53,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:29:53,944 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:29:53,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:29:53,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:29:53,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:29:53,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:29:53,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:29:53,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:29:53,945 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:29:53,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:29:53,945 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:29:53,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:29:53,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:29:53,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:29:53,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:29:53,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:29:53,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:29:53,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:29:53,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:29:53,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:29:53,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:29:53,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:29:53,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:29:53,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:29:54,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:29:54,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:29:54,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:29:54,273 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:29:54,273 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:29:54,274 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c [2019-10-07 13:29:54,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60271a67/ad8e3fb0ca234f75ac0f71f9fb2058b5/FLAGf42657d20 [2019-10-07 13:29:54,811 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:29:54,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-1.c [2019-10-07 13:29:54,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60271a67/ad8e3fb0ca234f75ac0f71f9fb2058b5/FLAGf42657d20 [2019-10-07 13:29:55,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60271a67/ad8e3fb0ca234f75ac0f71f9fb2058b5 [2019-10-07 13:29:55,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:29:55,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:29:55,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:29:55,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:29:55,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:29:55,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0f51fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55, skipping insertion in model container [2019-10-07 13:29:55,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,256 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:29:55,268 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:29:55,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:29:55,426 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:29:55,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:29:55,456 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:29:55,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55 WrapperNode [2019-10-07 13:29:55,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:29:55,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:29:55,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:29:55,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:29:55,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (1/1) ... [2019-10-07 13:29:55,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:29:55,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:29:55,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:29:55,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:29:55,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (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 [2019-10-07 13:29:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:29:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:29:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:29:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:29:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:29:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:29:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:29:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:29:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:29:55,790 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:29:55,790 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:29:55,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:29:55 BoogieIcfgContainer [2019-10-07 13:29:55,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:29:55,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:29:55,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:29:55,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:29:55,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:29:55" (1/3) ... [2019-10-07 13:29:55,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f99f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:29:55, skipping insertion in model container [2019-10-07 13:29:55,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:55" (2/3) ... [2019-10-07 13:29:55,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f99f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:29:55, skipping insertion in model container [2019-10-07 13:29:55,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:29:55" (3/3) ... [2019-10-07 13:29:55,799 INFO L109 eAbstractionObserver]: Analyzing ICFG const_1-1.c [2019-10-07 13:29:55,806 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:29:55,812 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:29:55,823 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:29:55,846 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:29:55,846 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:29:55,846 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:29:55,846 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:29:55,846 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:29:55,847 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:29:55,847 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:29:55,847 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:29:55,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-07 13:29:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:29:55,866 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:55,867 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:55,869 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:55,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:55,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1869232855, now seen corresponding path program 1 times [2019-10-07 13:29:55,881 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:55,882 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:55,882 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:55,882 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:56,075 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:56,075 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:29:56,075 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:29:56,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:29:56,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:29:56,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:29:56,112 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-10-07 13:29:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:29:56,182 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-07 13:29:56,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:29:56,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-07 13:29:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:29:56,195 INFO L225 Difference]: With dead ends: 29 [2019-10-07 13:29:56,195 INFO L226 Difference]: Without dead ends: 12 [2019-10-07 13:29:56,200 INFO L606 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 [2019-10-07 13:29:56,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-07 13:29:56,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-07 13:29:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-07 13:29:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-07 13:29:56,262 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-07 13:29:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:29:56,262 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-07 13:29:56,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:29:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-07 13:29:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:29:56,263 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:56,264 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:56,264 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:56,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1455464170, now seen corresponding path program 1 times [2019-10-07 13:29:56,265 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:56,265 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:56,265 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:56,266 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:56,388 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:56,388 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:29:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:56,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:29:56,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:29:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:56,477 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:29:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:56,516 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:29:56,541 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:29:56,541 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:29:56,548 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:29:56,556 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:29:56,557 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:29:56,615 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:29:56,849 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:29:56,888 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:29:56,892 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:29:56,893 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:29:56,893 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 76#(and (<= main_~x~0 1) (<= 0 main_~y~0) (not (< (mod main_~y~0 4294967296) 1024)) (<= 0 main_~x~0)) [2019-10-07 13:29:56,893 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:29:56,894 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:29:56,894 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#true [2019-10-07 13:29:56,894 INFO L193 IcfgInterpreter]: Reachable states at location L14-2 satisfy 71#(and (or (and (= main_~y~0 0) (= main_~x~0 1)) (and (<= main_~x~0 1) (<= 0 main_~y~0) (<= 0 main_~x~0))) (or (and (<= main_~x~0 1) (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 0)) (and (<= main_~x~0 1) (<= 0 main_~y~0) (<= 0 main_~x~0)))) [2019-10-07 13:29:56,895 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:29:56,895 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 100#true [2019-10-07 13:29:56,895 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 91#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:29:56,896 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:29:56,896 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-07 13:29:56,896 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 86#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:29:57,101 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:29:57,101 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 6] total 12 [2019-10-07 13:29:57,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 13:29:57,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 13:29:57,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:29:57,108 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2019-10-07 13:29:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:29:57,287 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-07 13:29:57,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 13:29:57,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2019-10-07 13:29:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:29:57,290 INFO L225 Difference]: With dead ends: 20 [2019-10-07 13:29:57,290 INFO L226 Difference]: Without dead ends: 15 [2019-10-07 13:29:57,292 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2019-10-07 13:29:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-07 13:29:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-07 13:29:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-07 13:29:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-07 13:29:57,298 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2019-10-07 13:29:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:29:57,299 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-07 13:29:57,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 13:29:57,299 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-07 13:29:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 13:29:57,300 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:57,300 INFO L385 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:57,503 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:57,504 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1007933545, now seen corresponding path program 2 times [2019-10-07 13:29:57,504 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:57,505 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:57,507 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:57,507 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:57,622 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:57,622 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:29:57,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:57,654 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-07 13:29:57,654 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:29:57,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 13:29:57,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:29:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:29:57,701 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:29:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:29:57,754 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:29:57,754 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 13 [2019-10-07 13:29:57,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 13:29:57,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 13:29:57,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:29:57,756 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2019-10-07 13:29:57,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:29:57,783 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-10-07 13:29:57,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:29:57,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-07 13:29:57,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:29:57,784 INFO L225 Difference]: With dead ends: 15 [2019-10-07 13:29:57,784 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 13:29:57,784 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2019-10-07 13:29:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 13:29:57,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 13:29:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 13:29:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 13:29:57,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-07 13:29:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:29:57,786 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 13:29:57,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 13:29:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 13:29:57,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 13:29:57,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:57,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 13:29:58,062 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-07 13:29:58,063 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:29:58,063 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:29:58,063 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-07 13:29:58,063 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 13:29:58,063 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 13:29:58,063 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2019-10-07 13:29:58,063 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2019-10-07 13:29:58,064 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2019-10-07 13:29:58,064 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (let ((.cse0 (<= 0 main_~y~0))) (or (and (= main_~x~0 0) .cse0) (and (<= main_~x~0 1) .cse0 (<= 0 main_~x~0) (<= main_~y~0 0)))) [2019-10-07 13:29:58,064 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (= main_~x~0 0) (<= 0 main_~y~0) (<= 1024 (mod main_~y~0 4294967296))) [2019-10-07 13:29:58,064 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-07 13:29:58,064 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-07 13:29:58,065 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-07 13:29:58,065 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-07 13:29:58,065 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-07 13:29:58,065 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-07 13:29:58,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:29:58 BoogieIcfgContainer [2019-10-07 13:29:58,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:29:58,097 INFO L168 Benchmark]: Toolchain (without parser) took 2856.85 ms. Allocated memory was 141.6 MB in the beginning and 231.7 MB in the end (delta: 90.2 MB). Free memory was 101.6 MB in the beginning and 147.5 MB in the end (delta: -45.9 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:29:58,099 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 120.2 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:29:58,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.91 ms. Allocated memory is still 141.6 MB. Free memory was 101.4 MB in the beginning and 92.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:29:58,106 INFO L168 Benchmark]: Boogie Preprocessor took 117.04 ms. Allocated memory was 141.6 MB in the beginning and 200.8 MB in the end (delta: 59.2 MB). Free memory was 92.1 MB in the beginning and 179.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:29:58,107 INFO L168 Benchmark]: RCFGBuilder took 217.14 ms. Allocated memory is still 200.8 MB. Free memory was 179.5 MB in the beginning and 167.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:29:58,108 INFO L168 Benchmark]: TraceAbstraction took 2299.72 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 167.8 MB in the beginning and 147.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:29:58,118 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 120.2 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 217.91 ms. Allocated memory is still 141.6 MB. Free memory was 101.4 MB in the beginning and 92.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.04 ms. Allocated memory was 141.6 MB in the beginning and 200.8 MB in the end (delta: 59.2 MB). Free memory was 92.1 MB in the beginning and 179.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 217.14 ms. Allocated memory is still 200.8 MB. Free memory was 179.5 MB in the beginning and 167.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2299.72 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 167.8 MB in the beginning and 147.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (x == 0 && 0 <= y) || (((x <= 1 && 0 <= y) && 0 <= x) && y <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 7 SDslu, 83 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 38 HoareAnnotationTreeSize, 9 FomulaSimplifications, 43 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2050 SizeOfPredicates, 4 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 20/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 356, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 21, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME[ms]: 14, TOOLS_POST_CALL_APPLICATIONS: 5, TOOLS_POST_CALL_TIME[ms]: 11, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 17, TOOLS_QUANTIFIERELIM_TIME[ms]: 20, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 10, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 24, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 18, DOMAIN_JOIN_TIME[ms]: 163, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 84, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 16, DOMAIN_ISBOTTOM_APPLICATIONS: 1, DOMAIN_ISBOTTOM_TIME[ms]: 2, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 176, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 176, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME[ms]: 6, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 6, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 11, DAG_COMPRESSION_PROCESSED_NODES: 57, DAG_COMPRESSION_RETAINED_NODES: 41, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...