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 0.1.24-0883e75 [2019-09-05 11:47:40,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 11:47:40,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 11:47:40,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 11:47:40,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 11:47:40,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 11:47:40,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 11:47:40,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 11:47:40,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 11:47:40,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 11:47:40,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 11:47:40,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 11:47:40,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 11:47:40,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 11:47:40,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 11:47:40,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 11:47:40,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 11:47:40,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 11:47:40,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 11:47:40,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 11:47:40,537 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 [2019-09-05 11:47:40,550 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 11:47:40,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 11:47:40,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 11:47:40,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 11:47:40,552 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 11:47:40,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 11:47:40,552 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 11:47:40,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 11:47:40,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 11:47:40,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 11:47:40,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 11:47:40,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 11:47:40,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 11:47:40,554 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 11:47:40,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 11:47:40,554 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 11:47:40,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 11:47:40,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 11:47:40,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 11:47:40,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 11:47:40,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 11:47:40,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 11:47:40,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 11:47:40,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 11:47:40,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 11:47:40,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 11:47:40,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 11:47:40,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 11:47:40,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 11:47:40,602 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 11:47:40,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 11:47:40,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 11:47:40,618 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 11:47:40,619 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 11:47:40,619 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2019-09-05 11:47:40,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3407c86/67066b1f8fb64dbe834072db717ba374/FLAG96729de4d [2019-09-05 11:47:41,078 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 11:47:41,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2019-09-05 11:47:41,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3407c86/67066b1f8fb64dbe834072db717ba374/FLAG96729de4d [2019-09-05 11:47:41,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3407c86/67066b1f8fb64dbe834072db717ba374 [2019-09-05 11:47:41,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 11:47:41,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 11:47:41,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 11:47:41,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 11:47:41,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 11:47:41,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f255d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41, skipping insertion in model container [2019-09-05 11:47:41,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,525 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 11:47:41,543 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 11:47:41,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:47:41,716 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 11:47:41,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:47:41,750 INFO L192 MainTranslator]: Completed translation [2019-09-05 11:47:41,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41 WrapperNode [2019-09-05 11:47:41,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 11:47:41,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 11:47:41,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 11:47:41,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 11:47:41,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (1/1) ... [2019-09-05 11:47:41,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 11:47:41,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 11:47:41,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 11:47:41,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 11:47:41,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (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 [2019-09-05 11:47:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 11:47:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 11:47:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 11:47:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 11:47:41,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 11:47:41,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 11:47:41,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-05 11:47:41,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 11:47:41,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 11:47:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 11:47:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 11:47:42,197 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 11:47:42,197 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 11:47:42,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:47:42 BoogieIcfgContainer [2019-09-05 11:47:42,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 11:47:42,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 11:47:42,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 11:47:42,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 11:47:42,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 11:47:41" (1/3) ... [2019-09-05 11:47:42,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b75e695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:47:42, skipping insertion in model container [2019-09-05 11:47:42,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:47:41" (2/3) ... [2019-09-05 11:47:42,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b75e695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:47:42, skipping insertion in model container [2019-09-05 11:47:42,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:47:42" (3/3) ... [2019-09-05 11:47:42,215 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2019-09-05 11:47:42,241 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 11:47:42,255 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 11:47:42,286 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 11:47:42,334 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 11:47:42,335 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 11:47:42,335 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 11:47:42,335 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 11:47:42,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 11:47:42,335 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 11:47:42,335 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 11:47:42,336 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 11:47:42,336 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 11:47:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-05 11:47:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-05 11:47:42,354 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:47:42,355 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:47:42,357 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:47:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:47:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash -133618162, now seen corresponding path program 1 times [2019-09-05 11:47:42,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:47:42,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:47:42,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:42,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:47:42,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:47:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:47:42,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:47:42,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 11:47:42,464 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 11:47:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 11:47:42,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 11:47:42,478 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-05 11:47:42,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:47:42,496 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-09-05 11:47:42,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 11:47:42,497 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-05 11:47:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:47:42,505 INFO L225 Difference]: With dead ends: 30 [2019-09-05 11:47:42,505 INFO L226 Difference]: Without dead ends: 13 [2019-09-05 11:47:42,508 INFO L628 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 [2019-09-05 11:47:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-05 11:47:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-05 11:47:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-05 11:47:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-09-05 11:47:42,540 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2019-09-05 11:47:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:47:42,540 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-09-05 11:47:42,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 11:47:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-09-05 11:47:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-05 11:47:42,541 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:47:42,541 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:47:42,542 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:47:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:47:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash -142853372, now seen corresponding path program 1 times [2019-09-05 11:47:42,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:47:42,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:47:42,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:42,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:47:42,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:47:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:47:42,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:47:42,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-05 11:47:42,856 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-05 11:47:42,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-05 11:47:42,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-05 11:47:42,859 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2019-09-05 11:47:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:47:44,973 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-09-05 11:47:44,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-05 11:47:44,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-09-05 11:47:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:47:44,977 INFO L225 Difference]: With dead ends: 20 [2019-09-05 11:47:44,978 INFO L226 Difference]: Without dead ends: 15 [2019-09-05 11:47:44,979 INFO L628 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 [2019-09-05 11:47:44,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-05 11:47:44,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-09-05 11:47:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-05 11:47:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-09-05 11:47:44,987 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-09-05 11:47:44,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:47:44,988 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-09-05 11:47:44,988 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-05 11:47:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-09-05 11:47:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-05 11:47:44,989 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:47:44,990 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:47:44,990 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:47:44,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:47:44,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1232195137, now seen corresponding path program 1 times [2019-09-05 11:47:44,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:47:44,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:47:44,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:44,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:47:44,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:45,001 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 11:47:45,001 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 11:47:45,002 INFO L223 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 11:47:45,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:47:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:47:45,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-05 11:47:45,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:47:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:47:45,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:47:45,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-05 11:47:45,091 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 11:47:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 11:47:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-05 11:47:45,092 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-09-05 11:47:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:47:47,142 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-05 11:47:47,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 11:47:47,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-05 11:47:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:47:47,144 INFO L225 Difference]: With dead ends: 21 [2019-09-05 11:47:47,144 INFO L226 Difference]: Without dead ends: 16 [2019-09-05 11:47:47,144 INFO L628 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 [2019-09-05 11:47:47,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-05 11:47:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-09-05 11:47:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-05 11:47:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-09-05 11:47:47,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13 [2019-09-05 11:47:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:47:47,149 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-09-05 11:47:47,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 11:47:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-09-05 11:47:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-05 11:47:47,150 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:47:47,150 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:47:47,151 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:47:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:47:47,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1289453439, now seen corresponding path program 1 times [2019-09-05 11:47:47,151 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:47:47,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:47:47,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:47,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:47:47,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:47,157 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 11:47:47,157 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 11:47:47,157 INFO L223 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 11:47:47,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:47:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:47:47,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-05 11:47:47,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:47:47,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:47:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:47:47,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 11:47:47,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-05 11:47:47,287 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-05 11:47:47,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-05 11:47:47,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-05 11:47:47,288 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 8 states. [2019-09-05 11:47:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:47:49,390 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-09-05 11:47:49,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-05 11:47:49,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-09-05 11:47:49,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:47:49,392 INFO L225 Difference]: With dead ends: 23 [2019-09-05 11:47:49,392 INFO L226 Difference]: Without dead ends: 18 [2019-09-05 11:47:49,393 INFO L628 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 [2019-09-05 11:47:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-05 11:47:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-09-05 11:47:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-05 11:47:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-05 11:47:49,400 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-09-05 11:47:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:47:49,400 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-05 11:47:49,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-05 11:47:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-05 11:47:49,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-05 11:47:49,403 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:47:49,403 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:47:49,403 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:47:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:47:49,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1005461508, now seen corresponding path program 1 times [2019-09-05 11:47:49,404 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:47:49,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:47:49,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:49,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:47:49,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:47:49,421 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 11:47:49,421 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 11:47:49,421 INFO L223 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 [2019-09-05 11:47:49,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:47:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:47:49,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-05 11:47:49,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:47:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:47:49,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 11:47:49,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-09-05 11:47:49,541 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 11:47:49,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 11:47:49,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-05 11:47:49,542 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2019-09-05 11:47:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:47:49,589 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-09-05 11:47:49,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 11:47:49,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-05 11:47:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:47:49,590 INFO L225 Difference]: With dead ends: 16 [2019-09-05 11:47:49,590 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 11:47:49,591 INFO L628 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 [2019-09-05 11:47:49,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 11:47:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 11:47:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 11:47:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 11:47:49,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-05 11:47:49,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:47:49,592 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 11:47:49,592 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 11:47:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 11:47:49,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 11:47:49,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-05 11:47:49,695 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-05 11:47:49,695 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-05 11:47:49,696 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-05 11:47:49,696 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-05 11:47:49,696 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-05 11:47:49,696 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-05 11:47:49,696 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2019-09-05 11:47:49,696 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2019-09-05 11:47:49,696 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-09-05 11:47:49,697 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))))) [2019-09-05 11:47:49,697 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-09-05 11:47:49,697 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)) main_~x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< 0 (+ .cse2 1))))) [2019-09-05 11:47:49,697 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2019-09-05 11:47:49,697 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2019-09-05 11:47:49,698 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2019-09-05 11:47:49,698 INFO L443 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-09-05 11:47:49,698 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2019-09-05 11:47:49,700 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-09-05 11:47:49,700 INFO L443 ceAbstractionStarter]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2019-09-05 11:47:49,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 11:47:49 BoogieIcfgContainer [2019-09-05 11:47:49,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 11:47:49,726 INFO L168 Benchmark]: Toolchain (without parser) took 8214.76 ms. Allocated memory was 132.1 MB in the beginning and 224.4 MB in the end (delta: 92.3 MB). Free memory was 86.8 MB in the beginning and 183.7 MB in the end (delta: -96.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 11:47:49,728 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 132.1 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 11:47:49,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.73 ms. Allocated memory is still 132.1 MB. Free memory was 86.6 MB in the beginning and 77.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-05 11:47:49,732 INFO L168 Benchmark]: Boogie Preprocessor took 161.04 ms. Allocated memory was 132.1 MB in the beginning and 201.3 MB in the end (delta: 69.2 MB). Free memory was 77.4 MB in the beginning and 177.7 MB in the end (delta: -100.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-05 11:47:49,733 INFO L168 Benchmark]: RCFGBuilder took 286.19 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 166.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-05 11:47:49,735 INFO L168 Benchmark]: TraceAbstraction took 7521.92 ms. Allocated memory was 201.3 MB in the beginning and 224.4 MB in the end (delta: 23.1 MB). Free memory was 166.2 MB in the beginning and 183.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2019-09-05 11:47:49,744 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 132.1 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.73 ms. Allocated memory is still 132.1 MB. Free memory was 86.6 MB in the beginning and 77.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.04 ms. Allocated memory was 132.1 MB in the beginning and 201.3 MB in the end (delta: 69.2 MB). Free memory was 77.4 MB in the beginning and 177.7 MB in the end (delta: -100.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.19 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 166.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7521.92 ms. Allocated memory was 201.3 MB in the beginning and 224.4 MB in the end (delta: 23.1 MB). Free memory was 166.2 MB in the beginning and 183.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 5.6 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, 7.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 6.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s 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, 62 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, 2834 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...