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-acceleration/phases_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:13:35,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:13:35,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:13:35,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:13:35,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:13:35,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:13:35,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:13:35,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:13:35,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:13:35,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:13:35,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:13:35,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:13:35,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:13:35,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:13:35,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:13:35,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:13:35,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:13:35,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:13:35,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:13:35,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:13:35,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:13:35,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:13:35,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:13:35,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:13:35,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 11:13:35,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:13:35,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:13:35,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:13:35,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 11:13:35,698 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:13:35,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:13:35,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:13:35,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:13:35,701 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:13:35,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:13:35,701 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:13:35,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:13:35,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:13:35,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:13:35,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:13:35,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:13:35,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:13:35,702 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:13:35,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:13:35,703 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:13:35,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:13:35,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:13:35,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:13:35,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:13:35,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:13:35,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:13:35,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:13:35,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:13:35,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:13:35,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:13:35,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:13:35,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:13:35,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:13:35,736 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:13:35,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:13:35,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:13:35,755 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:13:35,755 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:13:35,756 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2019-10-02 11:13:35,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f252a5e2b/d44ca43624bb4421a16a3c4d46d58e22/FLAG4c91a78d3 [2019-10-02 11:13:36,247 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:13:36,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2019-10-02 11:13:36,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f252a5e2b/d44ca43624bb4421a16a3c4d46d58e22/FLAG4c91a78d3 [2019-10-02 11:13:36,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f252a5e2b/d44ca43624bb4421a16a3c4d46d58e22 [2019-10-02 11:13:36,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:13:36,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:13:36,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:13:36,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:13:36,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:13:36,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:36,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f82b407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36, skipping insertion in model container [2019-10-02 11:13:36,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:36,709 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:13:36,727 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:13:36,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:13:36,906 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:13:36,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:13:36,943 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:13:36,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36 WrapperNode [2019-10-02 11:13:36,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:13:36,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:13:36,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:13:36,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:13:37,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:37,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:37,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:37,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:37,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:37,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:37,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (1/1) ... [2019-10-02 11:13:37,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:13:37,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:13:37,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:13:37,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:13:37,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:13:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:13:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:13:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:13:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:13:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:13:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 11:13:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-02 11:13:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:13:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:13:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:13:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:13:37,349 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:13:37,349 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 11:13:37,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:13:37 BoogieIcfgContainer [2019-10-02 11:13:37,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:13:37,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:13:37,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:13:37,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:13:37,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:13:36" (1/3) ... [2019-10-02 11:13:37,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b33c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:13:37, skipping insertion in model container [2019-10-02 11:13:37,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:13:36" (2/3) ... [2019-10-02 11:13:37,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b33c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:13:37, skipping insertion in model container [2019-10-02 11:13:37,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:13:37" (3/3) ... [2019-10-02 11:13:37,374 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2019-10-02 11:13:37,394 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:13:37,407 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:13:37,452 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:13:37,487 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:13:37,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:13:37,488 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:13:37,488 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:13:37,488 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:13:37,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:13:37,489 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:13:37,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:13:37,489 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:13:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-02 11:13:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-02 11:13:37,512 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:13:37,513 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:13:37,515 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:13:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:13:37,520 INFO L82 PathProgramCache]: Analyzing trace with hash -133618162, now seen corresponding path program 1 times [2019-10-02 11:13:37,521 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:13:37,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:13:37,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:37,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:13:37,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:13:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:13:37,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:13:37,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:13:37,653 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:13:37,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:13:37,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:13:37,666 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-02 11:13:37,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:13:37,685 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-10-02 11:13:37,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:13:37,687 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-10-02 11:13:37,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:13:37,694 INFO L225 Difference]: With dead ends: 30 [2019-10-02 11:13:37,694 INFO L226 Difference]: Without dead ends: 13 [2019-10-02 11:13:37,698 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:13:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-02 11:13:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-02 11:13:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-02 11:13:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-02 11:13:37,731 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2019-10-02 11:13:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:13:37,731 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-02 11:13:37,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:13:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-02 11:13:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-02 11:13:37,732 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:13:37,733 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:13:37,733 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:13:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:13:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash -142853372, now seen corresponding path program 1 times [2019-10-02 11:13:37,734 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:13:37,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:13:37,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:37,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:13:37,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:13:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:13:38,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:13:38,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 11:13:38,044 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 11:13:38,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 11:13:38,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-02 11:13:38,046 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2019-10-02 11:13:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:13:40,152 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-02 11:13:40,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 11:13:40,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-02 11:13:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:13:40,157 INFO L225 Difference]: With dead ends: 20 [2019-10-02 11:13:40,157 INFO L226 Difference]: Without dead ends: 15 [2019-10-02 11:13:40,160 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-02 11:13:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-02 11:13:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-10-02 11:13:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-02 11:13:40,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-10-02 11:13:40,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-10-02 11:13:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:13:40,170 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-10-02 11:13:40,170 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 11:13:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-10-02 11:13:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-02 11:13:40,171 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:13:40,172 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:13:40,173 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:13:40,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:13:40,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1232195137, now seen corresponding path program 1 times [2019-10-02 11:13:40,173 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:13:40,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:13:40,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:40,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:13:40,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:40,200 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 11:13:40,200 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 11:13:40,200 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-10-02 11:13:40,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 11:13:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:13:40,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 11:13:40,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:13:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:13:40,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:13:40,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 11:13:40,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 11:13:40,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 11:13:40,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 11:13:40,291 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-10-02 11:13:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:13:42,339 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-10-02 11:13:42,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 11:13:42,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-02 11:13:42,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:13:42,343 INFO L225 Difference]: With dead ends: 21 [2019-10-02 11:13:42,343 INFO L226 Difference]: Without dead ends: 16 [2019-10-02 11:13:42,344 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 11:13:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-02 11:13:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-02 11:13:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-02 11:13:42,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-10-02 11:13:42,350 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13 [2019-10-02 11:13:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:13:42,350 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-10-02 11:13:42,350 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 11:13:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-10-02 11:13:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-02 11:13:42,351 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:13:42,351 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:13:42,352 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:13:42,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:13:42,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1289453439, now seen corresponding path program 1 times [2019-10-02 11:13:42,352 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:13:42,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:13:42,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:42,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:13:42,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:42,358 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 11:13:42,358 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 11:13:42,359 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-10-02 11:13:42,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:13:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 11:13:42,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-02 11:13:42,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:13:42,476 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:13:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:13:42,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 11:13:42,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-10-02 11:13:42,516 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 11:13:42,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 11:13:42,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-02 11:13:42,517 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 8 states. [2019-10-02 11:13:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:13:44,660 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-10-02 11:13:44,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 11:13:44,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-10-02 11:13:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:13:44,662 INFO L225 Difference]: With dead ends: 23 [2019-10-02 11:13:44,662 INFO L226 Difference]: Without dead ends: 18 [2019-10-02 11:13:44,663 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-02 11:13:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-02 11:13:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-10-02 11:13:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-02 11:13:44,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-02 11:13:44,668 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-10-02 11:13:44,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:13:44,669 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-02 11:13:44,669 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 11:13:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-02 11:13:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 11:13:44,670 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:13:44,670 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:13:44,670 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:13:44,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:13:44,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1005461508, now seen corresponding path program 1 times [2019-10-02 11:13:44,671 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:13:44,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:13:44,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:44,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:13:44,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:13:44,679 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 11:13:44,680 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 11:13:44,680 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 11:13:44,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:13:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:13:44,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 11:13:44,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:13:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:13:44,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 11:13:44,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-10-02 11:13:44,828 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 11:13:44,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 11:13:44,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 11:13:44,829 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2019-10-02 11:13:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:13:44,852 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-10-02 11:13:44,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 11:13:44,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-02 11:13:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:13:44,854 INFO L225 Difference]: With dead ends: 16 [2019-10-02 11:13:44,854 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:13:44,855 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 11:13:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:13:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:13:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:13:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:13:44,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-02 11:13:44,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:13:44,856 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:13:44,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 11:13:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:13:44,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:13:44,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:13:44,988 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-02 11:13:44,988 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:13:44,988 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:13:44,988 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 11:13:44,989 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:13:44,989 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:13:44,989 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2019-10-02 11:13:44,989 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2019-10-02 11:13:44,989 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-10-02 11:13:44,990 INFO L439 ceAbstractionStarter]: At program point L19-2(lines 18 24) the Hoare annotation is: (and (= main_~x~0 1) (<= (+ (* 4294967296 (div main_~y~0 4294967296)) main_~x~0) (+ main_~y~0 (* 4294967296 (div main_~x~0 4294967296))))) [2019-10-02 11:13:44,990 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-10-02 11:13:44,990 INFO L439 ceAbstractionStarter]: At program point L18-2(lines 18 24) the Hoare annotation is: (let ((.cse2 (div main_~x~0 4294967296))) (let ((.cse1 (+ main_~y~0 (* 4294967296 .cse2))) (.cse0 (* 4294967296 (div main_~y~0 4294967296)))) (and (<= (+ .cse0 main_~x~0) .cse1) (< .cse1 (+ .cse0 main_~x~0 1)) (< 0 (+ .cse2 1))))) [2019-10-02 11:13:44,991 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2019-10-02 11:13:44,992 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2019-10-02 11:13:44,992 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2019-10-02 11:13:44,992 INFO L443 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-10-02 11:13:44,992 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2019-10-02 11:13:44,993 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-10-02 11:13:44,993 INFO L443 ceAbstractionStarter]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2019-10-02 11:13:45,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:13:45 BoogieIcfgContainer [2019-10-02 11:13:45,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:13:45,024 INFO L168 Benchmark]: Toolchain (without parser) took 8330.93 ms. Allocated memory was 134.2 MB in the beginning and 226.5 MB in the end (delta: 92.3 MB). Free memory was 89.6 MB in the beginning and 177.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-10-02 11:13:45,027 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 134.2 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:13:45,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.27 ms. Allocated memory is still 134.2 MB. Free memory was 89.4 MB in the beginning and 80.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-02 11:13:45,032 INFO L168 Benchmark]: Boogie Preprocessor took 124.14 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 80.2 MB in the beginning and 176.3 MB in the end (delta: -96.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-02 11:13:45,034 INFO L168 Benchmark]: RCFGBuilder took 282.56 ms. Allocated memory is still 199.8 MB. Free memory was 176.3 MB in the beginning and 164.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-10-02 11:13:45,036 INFO L168 Benchmark]: TraceAbstraction took 7667.14 ms. Allocated memory was 199.8 MB in the beginning and 226.5 MB in the end (delta: 26.7 MB). Free memory was 164.1 MB in the beginning and 177.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-10-02 11:13:45,047 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 134.2 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.27 ms. Allocated memory is still 134.2 MB. Free memory was 89.4 MB in the beginning and 80.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.14 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 80.2 MB in the beginning and 176.3 MB in the end (delta: -96.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 282.56 ms. Allocated memory is still 199.8 MB. Free memory was 176.3 MB in the beginning and 164.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7667.14 ms. Allocated memory was 199.8 MB in the beginning and 226.5 MB in the end (delta: 26.7 MB). Free memory was 164.1 MB in the beginning and 177.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 18]: Loop Invariant Derived loop invariant: x == 1 && 4294967296 * (y / 4294967296) + x <= y + 4294967296 * (x / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 7.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 6.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 11 SDslu, 67 SDs, 0 SdLazy, 86 SolverSat, 4 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 63 HoareAnnotationTreeSize, 11 FomulaSimplifications, 58 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 70 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2844 SizeOfPredicates, 4 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...