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/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:15:28,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:15:28,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:15:28,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:15:28,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:15:28,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:15:28,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:15:28,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:15:28,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:15:28,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:15:28,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:15:28,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:15:28,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:15:28,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:15:28,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:15:28,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:15:28,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:15:28,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:15:28,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:15:28,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:15:28,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:15:28,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:15:28,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:15:28,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:15:28,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:15:28,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:15:28,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:15:28,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:15:28,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:15:28,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:15:28,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:15:28,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:15:28,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:15:28,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:15:28,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:15:28,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:15:28,916 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 [2019-10-14 23:15:28,945 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:15:28,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:15:28,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:15:28,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:15:28,949 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:15:28,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:15:28,949 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:15:28,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:15:28,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:15:28,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:15:28,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:15:28,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:15:28,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:15:28,955 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:15:28,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:15:28,955 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:15:28,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:15:28,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:15:28,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:15:28,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:15:28,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:15:28,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:15:28,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:15:28,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:15:28,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:15:28,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:15:28,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:15:28,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:15:28,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:15:29,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:15:29,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:15:29,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:15:29,258 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:15:29,258 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:15:29,259 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2019-10-14 23:15:29,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e8b8612/5104555556cd409e8403a7e1612f3117/FLAGd1d3c2527 [2019-10-14 23:15:29,790 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:15:29,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2019-10-14 23:15:29,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e8b8612/5104555556cd409e8403a7e1612f3117/FLAGd1d3c2527 [2019-10-14 23:15:30,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e8b8612/5104555556cd409e8403a7e1612f3117 [2019-10-14 23:15:30,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:15:30,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:15:30,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:30,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:15:30,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:15:30,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6228bf37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30, skipping insertion in model container [2019-10-14 23:15:30,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,218 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:15:30,236 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:15:30,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:30,397 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:15:30,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:30,424 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:15:30,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30 WrapperNode [2019-10-14 23:15:30,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:30,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:15:30,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:15:30,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:15:30,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (1/1) ... [2019-10-14 23:15:30,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:15:30,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:15:30,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:15:30,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:15:30,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (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 [2019-10-14 23:15:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:15:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:15:30,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:15:30,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:15:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:15:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:15:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:15:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:15:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:15:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:15:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:15:30,780 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:15:30,780 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:15:30,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:30 BoogieIcfgContainer [2019-10-14 23:15:30,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:15:30,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:15:30,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:15:30,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:15:30,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:15:30" (1/3) ... [2019-10-14 23:15:30,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2000145a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:30, skipping insertion in model container [2019-10-14 23:15:30,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:30" (2/3) ... [2019-10-14 23:15:30,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2000145a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:30, skipping insertion in model container [2019-10-14 23:15:30,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:30" (3/3) ... [2019-10-14 23:15:30,790 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2019-10-14 23:15:30,800 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:15:30,808 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:15:30,819 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:15:30,854 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:15:30,855 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:15:30,855 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:15:30,855 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:15:30,856 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:15:30,856 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:15:30,856 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:15:30,856 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:15:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-14 23:15:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:15:30,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:30,891 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:30,893 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:30,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:30,902 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2019-10-14 23:15:30,915 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:30,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920674167] [2019-10-14 23:15:30,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:30,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:30,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:31,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920674167] [2019-10-14 23:15:31,030 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:31,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:15:31,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903851380] [2019-10-14 23:15:31,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:15:31,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:31,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:15:31,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:15:31,047 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-14 23:15:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:31,067 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-10-14 23:15:31,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:15:31,069 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:15:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:31,078 INFO L225 Difference]: With dead ends: 32 [2019-10-14 23:15:31,078 INFO L226 Difference]: Without dead ends: 13 [2019-10-14 23:15:31,081 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:15:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-14 23:15:31,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-14 23:15:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-14 23:15:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-14 23:15:31,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-10-14 23:15:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:31,122 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-14 23:15:31,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:15:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-14 23:15:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-14 23:15:31,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:31,123 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:31,124 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:31,124 INFO L82 PathProgramCache]: Analyzing trace with hash 99303034, now seen corresponding path program 1 times [2019-10-14 23:15:31,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:31,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040637096] [2019-10-14 23:15:31,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:31,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:31,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:31,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040637096] [2019-10-14 23:15:31,286 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:31,287 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:15:31,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654714548] [2019-10-14 23:15:31,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:15:31,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:31,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:15:31,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:15:31,290 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2019-10-14 23:15:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:31,361 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-10-14 23:15:31,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:15:31,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-14 23:15:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:31,363 INFO L225 Difference]: With dead ends: 21 [2019-10-14 23:15:31,363 INFO L226 Difference]: Without dead ends: 16 [2019-10-14 23:15:31,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:15:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-14 23:15:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-14 23:15:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-14 23:15:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-14 23:15:31,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2019-10-14 23:15:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:31,371 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-14 23:15:31,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:15:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-14 23:15:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:15:31,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:31,373 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:31,373 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:31,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1368172775, now seen corresponding path program 1 times [2019-10-14 23:15:31,374 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:31,374 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790286286] [2019-10-14 23:15:31,375 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:31,375 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:31,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:31,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790286286] [2019-10-14 23:15:31,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790379154] [2019-10-14 23:15:31,468 INFO L94 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 [2019-10-14 23:15:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:31,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:15:31,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:31,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:15:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:31,585 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:15:31,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-10-14 23:15:31,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806109434] [2019-10-14 23:15:31,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:15:31,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:15:31,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:15:31,588 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-10-14 23:15:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:31,675 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-14 23:15:31,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:15:31,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-10-14 23:15:31,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:31,680 INFO L225 Difference]: With dead ends: 24 [2019-10-14 23:15:31,680 INFO L226 Difference]: Without dead ends: 19 [2019-10-14 23:15:31,681 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:15:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-14 23:15:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-14 23:15:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-14 23:15:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-10-14 23:15:31,689 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2019-10-14 23:15:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:31,690 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-10-14 23:15:31,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:15:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-10-14 23:15:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:15:31,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:31,692 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:31,897 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:31,898 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:31,898 INFO L82 PathProgramCache]: Analyzing trace with hash -467892710, now seen corresponding path program 2 times [2019-10-14 23:15:31,899 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:31,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572220612] [2019-10-14 23:15:31,899 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:31,899 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:31,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:32,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572220612] [2019-10-14 23:15:32,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464184201] [2019-10-14 23:15:32,010 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-10-14 23:15:32,051 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:15:32,052 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:15:32,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:15:32,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:32,081 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:15:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:32,113 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:15:32,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-10-14 23:15:32,114 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339837263] [2019-10-14 23:15:32,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:15:32,115 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:32,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:15:32,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:15:32,116 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2019-10-14 23:15:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:32,180 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-10-14 23:15:32,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:15:32,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-10-14 23:15:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:32,182 INFO L225 Difference]: With dead ends: 19 [2019-10-14 23:15:32,182 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:15:32,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:15:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:15:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:15:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:15:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:15:32,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-14 23:15:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:32,187 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:15:32,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:15:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:15:32,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:15:32,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:32,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:15:32,455 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:15:32,455 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:15:32,455 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:15:32,455 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:15:32,456 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:15:32,456 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:15:32,456 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2019-10-14 23:15:32,456 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2019-10-14 23:15:32,456 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-14 23:15:32,457 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2019-10-14 23:15:32,457 INFO L443 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-10-14 23:15:32,457 INFO L443 ceAbstractionStarter]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2019-10-14 23:15:32,458 INFO L439 ceAbstractionStarter]: At program point L13-5(lines 13 16) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (<= 0 main_~y~0) (<= 1 main_~x~0)) [2019-10-14 23:15:32,458 INFO L439 ceAbstractionStarter]: At program point L13-6(lines 13 16) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2019-10-14 23:15:32,458 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:15:32,458 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:15:32,459 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:15:32,459 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:15:32,459 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:15:32,459 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:15:32,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:15:32 BoogieIcfgContainer [2019-10-14 23:15:32,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:15:32,479 INFO L168 Benchmark]: Toolchain (without parser) took 2279.59 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 88.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:32,480 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 143.7 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-14 23:15:32,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.53 ms. Allocated memory is still 143.7 MB. Free memory was 100.3 MB in the beginning and 91.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:32,483 INFO L168 Benchmark]: Boogie Preprocessor took 126.02 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 91.4 MB in the beginning and 179.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:32,484 INFO L168 Benchmark]: RCFGBuilder took 230.09 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 167.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:32,484 INFO L168 Benchmark]: TraceAbstraction took 1693.75 ms. Allocated memory is still 200.8 MB. Free memory was 167.2 MB in the beginning and 88.7 MB in the end (delta: 78.5 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:32,489 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 143.7 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 225.53 ms. Allocated memory is still 143.7 MB. Free memory was 100.3 MB in the beginning and 91.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.02 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 91.4 MB in the beginning and 179.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.09 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 167.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1693.75 ms. Allocated memory is still 200.8 MB. Free memory was 167.2 MB in the beginning and 88.7 MB in the end (delta: 78.5 MB). Peak memory consumption was 78.5 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: 13]: Loop Invariant Derived loop invariant: (y <= x && 0 <= y) && 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 15 SDslu, 122 SDs, 0 SdLazy, 49 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 18 HoareAnnotationTreeSize, 10 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3102 SizeOfPredicates, 4 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...