/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-invariants/const.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:33:47,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:33:47,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:33:47,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:33:47,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:33:47,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:33:47,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:33:47,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:33:47,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:33:47,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:33:47,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:33:47,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:33:47,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:33:47,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:33:47,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:33:47,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:33:47,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:33:47,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:33:47,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:33:47,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:33:47,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:33:47,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:33:47,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:33:47,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:33:47,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:33:47,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:33:47,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:33:47,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:33:47,615 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 [2019-11-07 00:33:47,629 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:33:47,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:33:47,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:33:47,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:33:47,631 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:33:47,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:33:47,631 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:33:47,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:33:47,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:33:47,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:33:47,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:33:47,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:33:47,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:33:47,633 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:33:47,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:33:47,633 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:33:47,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:33:47,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:33:47,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:33:47,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:33:47,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:33:47,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:33:47,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:33:47,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:33:47,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:33:47,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:33:47,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:33:47,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:33:47,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:33:47,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:33:47,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:33:47,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:33:47,983 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:33:47,983 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:33:47,986 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/const.c [2019-11-07 00:33:48,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3f5223a/44817382b432453c9517bceee9bbe51b/FLAG795a931ce [2019-11-07 00:33:48,487 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:33:48,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const.c [2019-11-07 00:33:48,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3f5223a/44817382b432453c9517bceee9bbe51b/FLAG795a931ce [2019-11-07 00:33:48,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3f5223a/44817382b432453c9517bceee9bbe51b [2019-11-07 00:33:48,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:33:48,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:33:48,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:33:48,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:33:48,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:33:48,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:33:48" (1/1) ... [2019-11-07 00:33:48,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128aa138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:48, skipping insertion in model container [2019-11-07 00:33:48,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:33:48" (1/1) ... [2019-11-07 00:33:49,004 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:33:49,031 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:33:49,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:33:49,378 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:33:49,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:33:49,415 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:33:49,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49 WrapperNode [2019-11-07 00:33:49,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:33:49,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:33:49,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:33:49,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:33:49,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (1/1) ... [2019-11-07 00:33:49,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (1/1) ... [2019-11-07 00:33:49,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (1/1) ... [2019-11-07 00:33:49,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (1/1) ... [2019-11-07 00:33:49,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (1/1) ... [2019-11-07 00:33:49,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (1/1) ... [2019-11-07 00:33:49,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (1/1) ... [2019-11-07 00:33:49,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:33:49,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:33:49,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:33:49,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:33:49,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (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 [2019-11-07 00:33:49,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:33:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:33:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:33:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:33:49,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:33:49,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 00:33:49,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:33:49,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:33:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:33:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:33:49,759 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:33:49,759 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:33:49,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:33:49 BoogieIcfgContainer [2019-11-07 00:33:49,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:33:49,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:33:49,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:33:49,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:33:49,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:33:48" (1/3) ... [2019-11-07 00:33:49,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6803c31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:33:49, skipping insertion in model container [2019-11-07 00:33:49,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:49" (2/3) ... [2019-11-07 00:33:49,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6803c31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:33:49, skipping insertion in model container [2019-11-07 00:33:49,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:33:49" (3/3) ... [2019-11-07 00:33:49,768 INFO L109 eAbstractionObserver]: Analyzing ICFG const.c [2019-11-07 00:33:49,779 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:33:49,786 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:33:49,799 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:33:49,826 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:33:49,827 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:33:49,827 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:33:49,827 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:33:49,827 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:33:49,828 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:33:49,828 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:33:49,828 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:33:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-07 00:33:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 00:33:49,865 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:33:49,867 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:33:49,869 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:33:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:33:49,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1311776583, now seen corresponding path program 1 times [2019-11-07 00:33:49,890 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:33:49,891 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313329916] [2019-11-07 00:33:49,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:33:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:33:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:33:50,123 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313329916] [2019-11-07 00:33:50,124 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:33:50,124 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:33:50,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041883267] [2019-11-07 00:33:50,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:33:50,132 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:33:50,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:33:50,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:33:50,150 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-11-07 00:33:50,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:33:50,179 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2019-11-07 00:33:50,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:33:50,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-07 00:33:50,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:33:50,191 INFO L225 Difference]: With dead ends: 35 [2019-11-07 00:33:50,191 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 00:33:50,194 INFO L630 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 [2019-11-07 00:33:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 00:33:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-07 00:33:50,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 00:33:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-07 00:33:50,237 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2019-11-07 00:33:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:33:50,238 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-07 00:33:50,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:33:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-07 00:33:50,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 00:33:50,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:33:50,239 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:33:50,239 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:33:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:33:50,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1254518281, now seen corresponding path program 1 times [2019-11-07 00:33:50,240 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:33:50,241 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718934206] [2019-11-07 00:33:50,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:33:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:33:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:33:50,320 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718934206] [2019-11-07 00:33:50,323 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:33:50,323 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:33:50,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339894946] [2019-11-07 00:33:50,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:33:50,326 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:33:50,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:33:50,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:33:50,327 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-11-07 00:33:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:33:50,388 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-07 00:33:50,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:33:50,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-07 00:33:50,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:33:50,390 INFO L225 Difference]: With dead ends: 15 [2019-11-07 00:33:50,390 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:33:50,391 INFO L630 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 [2019-11-07 00:33:50,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:33:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:33:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:33:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:33:50,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-07 00:33:50,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:33:50,394 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:33:50,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:33:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:33:50,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:33:50,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:33:50,475 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:33:50,475 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:33:50,475 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:33:50,475 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:33:50,476 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:33:50,476 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:33:50,476 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 20) no Hoare annotation was computed. [2019-11-07 00:33:50,476 INFO L439 ceAbstractionStarter]: At program point L15(lines 11 18) the Hoare annotation is: (let ((.cse0 (div main_~s~0 4294967296))) (and (= main_~s~0 (* 4294967296 .cse0)) (< 0 (+ .cse0 1)))) [2019-11-07 00:33:50,477 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 20) no Hoare annotation was computed. [2019-11-07 00:33:50,477 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 18) no Hoare annotation was computed. [2019-11-07 00:33:50,477 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 20) the Hoare annotation is: true [2019-11-07 00:33:50,477 INFO L439 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: (let ((.cse0 (div main_~s~0 4294967296))) (and (= main_~s~0 (* 4294967296 .cse0)) (< 0 (+ .cse0 1)))) [2019-11-07 00:33:50,478 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 14) no Hoare annotation was computed. [2019-11-07 00:33:50,478 INFO L443 ceAbstractionStarter]: For program point L12-2(lines 11 18) no Hoare annotation was computed. [2019-11-07 00:33:50,478 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 00:33:50,478 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 00:33:50,479 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 00:33:50,479 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 00:33:50,479 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 00:33:50,479 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 00:33:50,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:33:50 BoogieIcfgContainer [2019-11-07 00:33:50,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:33:50,496 INFO L168 Benchmark]: Toolchain (without parser) took 1537.49 ms. Allocated memory was 142.1 MB in the beginning and 198.2 MB in the end (delta: 56.1 MB). Free memory was 99.7 MB in the beginning and 128.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:50,497 INFO L168 Benchmark]: CDTParser took 1.88 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:33:50,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.60 ms. Allocated memory is still 142.1 MB. Free memory was 99.5 MB in the beginning and 90.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:50,500 INFO L168 Benchmark]: Boogie Preprocessor took 114.36 ms. Allocated memory was 142.1 MB in the beginning and 198.2 MB in the end (delta: 56.1 MB). Free memory was 90.3 MB in the beginning and 176.3 MB in the end (delta: -86.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:50,501 INFO L168 Benchmark]: RCFGBuilder took 228.09 ms. Allocated memory is still 198.2 MB. Free memory was 176.3 MB in the beginning and 164.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:50,502 INFO L168 Benchmark]: TraceAbstraction took 732.09 ms. Allocated memory is still 198.2 MB. Free memory was 164.9 MB in the beginning and 128.1 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:50,506 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.88 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.60 ms. Allocated memory is still 142.1 MB. Free memory was 99.5 MB in the beginning and 90.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.36 ms. Allocated memory was 142.1 MB in the beginning and 198.2 MB in the end (delta: 56.1 MB). Free memory was 90.3 MB in the beginning and 176.3 MB in the end (delta: -86.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 228.09 ms. Allocated memory is still 198.2 MB. Free memory was 176.3 MB in the beginning and 164.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 732.09 ms. Allocated memory is still 198.2 MB. Free memory was 164.9 MB in the beginning and 128.1 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 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: 11]: Loop Invariant Derived loop invariant: s == 4294967296 * (s / 4294967296) && 0 < s / 4294967296 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 13 SDslu, 35 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 35 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...