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/const_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:33:15,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:33:15,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:33:15,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:33:15,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:33:15,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:33:15,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:33:15,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:33:15,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:33:15,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:33:15,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:33:15,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:33:15,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:33:15,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:33:15,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:33:15,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:33:15,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:33:15,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:33:15,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:33:15,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:33:15,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:33:15,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:33:15,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:33:15,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:33:15,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-03 19:33:15,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-03 19:33:15,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-03 19:33:15,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-03 19:33:15,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-03 19:33:15,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-03 19:33:15,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 19:33:15,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 19:33:15,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 19:33:15,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 19:33:15,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 19:33:15,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 19:33:15,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 19:33:15,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 19:33:15,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:33:15,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:33:15,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:33:15,623 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 19:33:15,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:33:15,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:33:15,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:33:15,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:33:15,640 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:33:15,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:33:15,640 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:33:15,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:33:15,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:33:15,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:33:15,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:33:15,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:33:15,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:33:15,641 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:33:15,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:33:15,642 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:33:15,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:33:15,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:33:15,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:33:15,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:33:15,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:33:15,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:33:15,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:33:15,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:33:15,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:33:15,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:33:15,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:33:15,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:33:15,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:33:15,673 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:33:15,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:33:15,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:33:15,692 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:33:15,693 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:33:15,693 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c [2019-09-03 19:33:15,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fcb06779/2224430c346f49f493e818d4cc37c783/FLAG0eaa2bcf0 [2019-09-03 19:33:16,172 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:33:16,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-1.c [2019-09-03 19:33:16,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fcb06779/2224430c346f49f493e818d4cc37c783/FLAG0eaa2bcf0 [2019-09-03 19:33:16,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fcb06779/2224430c346f49f493e818d4cc37c783 [2019-09-03 19:33:16,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:33:16,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:33:16,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:33:16,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:33:16,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:33:16,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:16,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d452d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16, skipping insertion in model container [2019-09-03 19:33:16,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:16,660 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:33:16,679 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:33:16,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:33:16,893 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:33:16,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:33:16,925 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:33:16,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16 WrapperNode [2019-09-03 19:33:16,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:33:16,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:33:16,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:33:16,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:33:17,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:17,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:17,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:17,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:17,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:17,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:17,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (1/1) ... [2019-09-03 19:33:17,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:33:17,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:33:17,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:33:17,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:33:17,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (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 19:33:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:33:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:33:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:33:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:33:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:33:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:33:17,274 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:33:17,275 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 19:33:17,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:33:17 BoogieIcfgContainer [2019-09-03 19:33:17,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:33:17,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:33:17,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:33:17,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:33:17,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:33:16" (1/3) ... [2019-09-03 19:33:17,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fbbc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:33:17, skipping insertion in model container [2019-09-03 19:33:17,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:33:16" (2/3) ... [2019-09-03 19:33:17,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fbbc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:33:17, skipping insertion in model container [2019-09-03 19:33:17,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:33:17" (3/3) ... [2019-09-03 19:33:17,285 INFO L109 eAbstractionObserver]: Analyzing ICFG const_1-1.c [2019-09-03 19:33:17,295 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:33:17,302 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:33:17,320 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:33:17,351 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:33:17,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:33:17,352 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:33:17,353 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:33:17,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:33:17,353 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:33:17,353 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:33:17,353 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:33:17,354 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:33:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-09-03 19:33:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 19:33:17,377 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:33:17,378 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:33:17,381 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:33:17,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:33:17,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2019-09-03 19:33:17,389 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:33:17,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:33:17,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:33:17,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:33:17,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:33:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:33:17,591 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 19:33:17,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:33:17,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 19:33:17,619 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 19:33:17,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 19:33:17,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 19:33:17,662 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-09-03 19:33:17,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:33:17,748 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-09-03 19:33:17,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 19:33:17,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-09-03 19:33:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:33:17,766 INFO L225 Difference]: With dead ends: 29 [2019-09-03 19:33:17,766 INFO L226 Difference]: Without dead ends: 12 [2019-09-03 19:33:17,773 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 19:33:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-09-03 19:33:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-09-03 19:33:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-09-03 19:33:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-09-03 19:33:17,833 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-09-03 19:33:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:33:17,834 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-09-03 19:33:17,834 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 19:33:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-09-03 19:33:17,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 19:33:17,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:33:17,840 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:33:17,841 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:33:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:33:17,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2019-09-03 19:33:17,843 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:33:17,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:33:17,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:33:17,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:33:17,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:33:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:33:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:33:18,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:33:18,028 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 -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:33:18,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:33:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:33:18,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-03 19:33:18,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:33:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:33:18,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:33:18,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-09-03 19:33:18,130 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:33:18,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:33:18,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:33:18,131 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-09-03 19:33:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:33:18,161 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-09-03 19:33:18,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 19:33:18,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-03 19:33:18,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:33:18,164 INFO L225 Difference]: With dead ends: 18 [2019-09-03 19:33:18,164 INFO L226 Difference]: Without dead ends: 13 [2019-09-03 19:33:18,166 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:33:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-03 19:33:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-03 19:33:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-03 19:33:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-03 19:33:18,175 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-03 19:33:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:33:18,176 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-03 19:33:18,176 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:33:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-03 19:33:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 19:33:18,178 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:33:18,178 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:33:18,178 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:33:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:33:18,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2019-09-03 19:33:18,180 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:33:18,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:33:18,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:33:18,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:33:18,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:33:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:33:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-03 19:33:18,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:33:18,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:33:18,332 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:33:18,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:33:18,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:33:18,333 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-09-03 19:33:18,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:33:18,354 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-09-03 19:33:18,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:33:18,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-09-03 19:33:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:33:18,355 INFO L225 Difference]: With dead ends: 13 [2019-09-03 19:33:18,355 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:33:18,356 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 19:33:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:33:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:33:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:33:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:33:18,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-09-03 19:33:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:33:18,357 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:33:18,357 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:33:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:33:18,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:33:18,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:33:18,427 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 19:33:18,427 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:33:18,427 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:33:18,428 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:33:18,428 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:33:18,428 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:33:18,428 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2019-09-03 19:33:18,428 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2019-09-03 19:33:18,428 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2019-09-03 19:33:18,429 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= 0 main_~y~0) (<= main_~y~0 0)) (and (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296))) (<= 0 main_~x~0))) [2019-09-03 19:33:18,429 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296))) (<= 0 main_~x~0)) [2019-09-03 19:33:18,429 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-03 19:33:18,429 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-03 19:33:18,430 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:33:18,430 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-03 19:33:18,430 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-03 19:33:18,430 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:33:18,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:33:18 BoogieIcfgContainer [2019-09-03 19:33:18,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:33:18,453 INFO L168 Benchmark]: Toolchain (without parser) took 1809.69 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 86.3 MB in the beginning and 114.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2019-09-03 19:33:18,456 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 104.5 MB in the beginning and 104.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:33:18,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.46 ms. Allocated memory is still 138.4 MB. Free memory was 85.9 MB in the beginning and 76.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-03 19:33:18,461 INFO L168 Benchmark]: Boogie Preprocessor took 131.49 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 76.6 MB in the beginning and 176.6 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:33:18,462 INFO L168 Benchmark]: RCFGBuilder took 217.55 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 165.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:33:18,464 INFO L168 Benchmark]: TraceAbstraction took 1171.47 ms. Allocated memory is still 198.7 MB. Free memory was 165.2 MB in the beginning and 114.5 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:33:18,475 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 104.5 MB in the beginning and 104.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.46 ms. Allocated memory is still 138.4 MB. Free memory was 85.9 MB in the beginning and 76.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.49 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 76.6 MB in the beginning and 176.6 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 217.55 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 165.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1171.47 ms. Allocated memory is still 198.7 MB. Free memory was 165.2 MB in the beginning and 114.5 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (0 <= y && y <= 0) || (x <= 4294967296 * (x / 4294967296) && 0 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 1 SDslu, 52 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 35 HoareAnnotationTreeSize, 9 FomulaSimplifications, 17 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1022 SizeOfPredicates, 1 NumberOfNonLiveVariables, 29 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 3/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...