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-industry-pattern/mod3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:03:45,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:03:45,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:03:45,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 20:03:45,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:03:45,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:03:45,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:03:45,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:03:45,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:03:45,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:03:45,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:03:45,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:03:45,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:03:45,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:03:45,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:03:45,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:03:45,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:03:45,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:03:45,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:03:45,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:03:45,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:03:45,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:03:45,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:03:45,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:03:45,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:03:45,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:03:45,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:03:45,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:03:45,521 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 [2019-09-03 20:03:45,542 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:03:45,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:03:45,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 20:03:45,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 20:03:45,544 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 20:03:45,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:03:45,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:03:45,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 20:03:45,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:03:45,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:03:45,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:03:45,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:03:45,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:03:45,546 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:03:45,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:03:45,546 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 20:03:45,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:03:45,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:03:45,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:03:45,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 20:03:45,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 20:03:45,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:03:45,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:03:45,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:03:45,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 20:03:45,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 20:03:45,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:03:45,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:03:45,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 20:03:45,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:03:45,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:03:45,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:03:45,617 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:03:45,617 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:03:45,618 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c [2019-09-03 20:03:45,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bcd93c8/18a438fd014d4847b8f885bfc5587ff6/FLAGfd0dbd6cd [2019-09-03 20:03:46,116 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:03:46,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c [2019-09-03 20:03:46,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bcd93c8/18a438fd014d4847b8f885bfc5587ff6/FLAGfd0dbd6cd [2019-09-03 20:03:46,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bcd93c8/18a438fd014d4847b8f885bfc5587ff6 [2019-09-03 20:03:46,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:03:46,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:03:46,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:03:46,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:03:46,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:03:46,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cb8da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46, skipping insertion in model container [2019-09-03 20:03:46,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,540 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:03:46,556 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:03:46,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:03:46,736 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:03:46,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:03:46,764 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:03:46,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46 WrapperNode [2019-09-03 20:03:46,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:03:46,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:03:46,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:03:46,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:03:46,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (1/1) ... [2019-09-03 20:03:46,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:03:46,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:03:46,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:03:46,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:03:46,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (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 [2019-09-03 20:03:46,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:03:46,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:03:46,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:03:46,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:03:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:03:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:03:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:03:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:03:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:03:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:03:47,127 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:03:47,127 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:03:47,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:03:47 BoogieIcfgContainer [2019-09-03 20:03:47,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:03:47,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:03:47,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:03:47,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:03:47,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:03:46" (1/3) ... [2019-09-03 20:03:47,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7c828d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:03:47, skipping insertion in model container [2019-09-03 20:03:47,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:03:46" (2/3) ... [2019-09-03 20:03:47,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7c828d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:03:47, skipping insertion in model container [2019-09-03 20:03:47,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:03:47" (3/3) ... [2019-09-03 20:03:47,136 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c [2019-09-03 20:03:47,145 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:03:47,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:03:47,170 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:03:47,198 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 20:03:47,199 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:03:47,199 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 20:03:47,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:03:47,200 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:03:47,200 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:03:47,200 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:03:47,200 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:03:47,200 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:03:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-03 20:03:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 20:03:47,221 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:03:47,222 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:03:47,224 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:03:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:03:47,228 INFO L82 PathProgramCache]: Analyzing trace with hash 271538127, now seen corresponding path program 1 times [2019-09-03 20:03:47,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:03:47,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:03:47,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:03:47,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:03:47,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:03:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:03:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:03:47,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:03:47,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:03:47,327 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:03:47,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:03:47,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:03:47,342 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-09-03 20:03:47,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:03:47,361 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-09-03 20:03:47,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:03:47,362 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 20:03:47,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:03:47,369 INFO L225 Difference]: With dead ends: 36 [2019-09-03 20:03:47,370 INFO L226 Difference]: Without dead ends: 16 [2019-09-03 20:03:47,372 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 [2019-09-03 20:03:47,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-03 20:03:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-03 20:03:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 20:03:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-09-03 20:03:47,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-09-03 20:03:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:03:47,409 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-09-03 20:03:47,409 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:03:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-09-03 20:03:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 20:03:47,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:03:47,411 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:03:47,411 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:03:47,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:03:47,412 INFO L82 PathProgramCache]: Analyzing trace with hash 183026044, now seen corresponding path program 1 times [2019-09-03 20:03:47,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:03:47,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:03:47,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:03:47,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:03:47,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:03:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:03:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:03:47,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:03:47,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 20:03:47,540 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 20:03:47,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 20:03:47,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:03:47,541 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2019-09-03 20:03:47,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:03:47,624 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-09-03 20:03:47,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 20:03:47,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-09-03 20:03:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:03:47,626 INFO L225 Difference]: With dead ends: 27 [2019-09-03 20:03:47,626 INFO L226 Difference]: Without dead ends: 21 [2019-09-03 20:03:47,627 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:03:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-03 20:03:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-09-03 20:03:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 20:03:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-09-03 20:03:47,633 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-09-03 20:03:47,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:03:47,633 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-09-03 20:03:47,634 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 20:03:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-09-03 20:03:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-03 20:03:47,635 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:03:47,635 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:03:47,640 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:03:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:03:47,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1587594336, now seen corresponding path program 1 times [2019-09-03 20:03:47,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:03:47,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:03:47,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:03:47,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:03:47,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:03:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:03:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:03:47,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:03:47,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:03:47,812 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:03:47,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:03:47,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:03:47,813 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2019-09-03 20:03:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:03:47,929 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2019-09-03 20:03:47,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:03:47,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-09-03 20:03:47,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:03:47,932 INFO L225 Difference]: With dead ends: 32 [2019-09-03 20:03:47,932 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:03:47,933 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:03:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:03:47,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:03:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:03:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:03:47,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-03 20:03:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:03:47,936 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:03:47,936 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:03:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:03:47,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:03:47,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 20:03:47,996 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 20:03:47,996 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:03:47,996 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:03:47,996 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 20:03:47,997 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 20:03:47,997 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 20:03:47,997 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (<= main_~x~0 (let ((.cse0 (div main_~x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ main_~x~0 (* (- 4294967296) .cse0)) 3))))) [2019-09-03 20:03:47,997 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 33) no Hoare annotation was computed. [2019-09-03 20:03:47,998 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 26) no Hoare annotation was computed. [2019-09-03 20:03:47,998 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 16 29) the Hoare annotation is: (or (<= main_~x~0 (let ((.cse0 (div main_~x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ main_~x~0 (* (- 4294967296) .cse0)) 3))))) (and (<= (div main_~y~0 4294967296) 0) (<= 1 main_~y~0))) [2019-09-03 20:03:47,998 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2019-09-03 20:03:47,998 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 33) no Hoare annotation was computed. [2019-09-03 20:03:47,998 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 31) no Hoare annotation was computed. [2019-09-03 20:03:47,999 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 33) the Hoare annotation is: true [2019-09-03 20:03:47,999 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 27) no Hoare annotation was computed. [2019-09-03 20:03:47,999 INFO L443 ceAbstractionStarter]: For program point L16-1(lines 16 29) no Hoare annotation was computed. [2019-09-03 20:03:47,999 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 12 33) no Hoare annotation was computed. [2019-09-03 20:03:47,999 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-09-03 20:03:48,000 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 10) the Hoare annotation is: true [2019-09-03 20:03:48,000 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 10) no Hoare annotation was computed. [2019-09-03 20:03:48,000 INFO L443 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2019-09-03 20:03:48,000 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 8) no Hoare annotation was computed. [2019-09-03 20:03:48,000 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 10) no Hoare annotation was computed. [2019-09-03 20:03:48,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:03:48 BoogieIcfgContainer [2019-09-03 20:03:48,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:03:48,019 INFO L168 Benchmark]: Toolchain (without parser) took 1493.09 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 84.6 MB in the beginning and 115.5 MB in the end (delta: -30.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:03:48,020 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 103.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:03:48,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.65 ms. Allocated memory is still 138.4 MB. Free memory was 84.3 MB in the beginning and 75.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:03:48,022 INFO L168 Benchmark]: Boogie Preprocessor took 118.49 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 75.0 MB in the beginning and 175.6 MB in the end (delta: -100.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:03:48,023 INFO L168 Benchmark]: RCFGBuilder took 244.71 ms. Allocated memory is still 198.2 MB. Free memory was 175.6 MB in the beginning and 163.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:03:48,024 INFO L168 Benchmark]: TraceAbstraction took 886.64 ms. Allocated memory is still 198.2 MB. Free memory was 163.3 MB in the beginning and 115.5 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:03:48,028 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 103.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.65 ms. Allocated memory is still 138.4 MB. Free memory was 84.3 MB in the beginning and 75.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.49 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 75.0 MB in the beginning and 175.6 MB in the end (delta: -100.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 244.71 ms. Allocated memory is still 198.2 MB. Free memory was 175.6 MB in the beginning and 163.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 886.64 ms. Allocated memory is still 198.2 MB. Free memory was 163.3 MB in the beginning and 115.5 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 16]: Loop Invariant Derived loop invariant: x <= 4294967296 * (x / 4294967296) + 3 * ((x + -4294967296 * (x / 4294967296)) / 3) || (y / 4294967296 <= 0 && 1 <= y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 7 SDslu, 55 SDs, 0 SdLazy, 24 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 53 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1773 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...