./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/hhk2008.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/hhk2008.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec3b2971b2acb4642d882078251a0cbf2b9f01e8 .................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:06:54,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:06:54,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:06:54,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:06:54,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:06:54,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:06:54,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:06:54,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:06:54,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:06:54,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:06:54,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:06:54,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:06:54,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:06:54,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:06:54,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:06:54,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:06:54,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:06:54,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:06:54,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:06:54,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:06:54,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:06:54,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:06:54,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:06:54,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:06:54,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:06:54,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:06:54,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:06:54,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:06:54,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:06:54,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:06:54,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:06:54,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:06:54,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:06:54,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:06:54,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:06:54,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:06:54,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:06:54,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:06:54,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:06:54,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:06:54,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:06:54,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:06:54,816 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:06:54,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:06:54,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:06:54,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:06:54,819 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:06:54,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:06:54,820 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:06:54,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:06:54,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:06:54,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:06:54,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:06:54,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:06:54,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:06:54,825 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:06:54,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:06:54,825 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:06:54,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:06:54,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:06:54,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:06:54,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:06:54,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:06:54,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:54,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:06:54,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:06:54,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:06:54,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:06:54,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:06:54,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:06:54,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:06:54,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec3b2971b2acb4642d882078251a0cbf2b9f01e8 [2019-11-28 17:06:55,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:06:55,174 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:06:55,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:06:55,180 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:06:55,182 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:06:55,183 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/hhk2008.i [2019-11-28 17:06:55,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f572bf95e/614e0521b2fa4a888575f16e1e831720/FLAG8f7f8d43a [2019-11-28 17:06:55,728 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:06:55,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/hhk2008.i [2019-11-28 17:06:55,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f572bf95e/614e0521b2fa4a888575f16e1e831720/FLAG8f7f8d43a [2019-11-28 17:06:56,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f572bf95e/614e0521b2fa4a888575f16e1e831720 [2019-11-28 17:06:56,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:06:56,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:06:56,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:56,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:06:56,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:06:56,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c74f6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56, skipping insertion in model container [2019-11-28 17:06:56,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:06:56,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:06:56,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:56,351 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:06:56,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:56,377 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:06:56,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56 WrapperNode [2019-11-28 17:06:56,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:56,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:56,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:06:56,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:06:56,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:56,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:06:56,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:06:56,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:06:56,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2019-11-28 17:06:56,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:06:56,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:06:56,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:06:56,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:06:56,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (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 [2019-11-28 17:06:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:06:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:06:56,696 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:06:56,697 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:06:56,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:56 BoogieIcfgContainer [2019-11-28 17:06:56,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:06:56,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:06:56,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:06:56,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:06:56,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:56" (1/3) ... [2019-11-28 17:06:56,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f03f2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:56, skipping insertion in model container [2019-11-28 17:06:56,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (2/3) ... [2019-11-28 17:06:56,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f03f2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:56, skipping insertion in model container [2019-11-28 17:06:56,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:56" (3/3) ... [2019-11-28 17:06:56,707 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2019-11-28 17:06:56,718 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:06:56,725 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:06:56,739 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:06:56,767 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:06:56,768 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:06:56,768 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:06:56,768 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:06:56,768 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:06:56,769 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:06:56,769 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:06:56,769 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:06:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-28 17:06:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:06:56,794 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:56,796 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:56,796 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:56,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1482159475, now seen corresponding path program 1 times [2019-11-28 17:06:56,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:56,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218386243] [2019-11-28 17:06:56,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:57,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218386243] [2019-11-28 17:06:57,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:57,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 17:06:57,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029547677] [2019-11-28 17:06:57,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:06:57,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:06:57,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:06:57,155 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2019-11-28 17:06:57,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:57,231 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-11-28 17:06:57,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:06:57,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 17:06:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:57,244 INFO L225 Difference]: With dead ends: 30 [2019-11-28 17:06:57,245 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:06:57,251 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:06:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:06:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:06:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:06:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:06:57,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-28 17:06:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:57,282 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:06:57,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:06:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:06:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:06:57,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:57,283 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:57,283 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:57,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:57,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1299361911, now seen corresponding path program 1 times [2019-11-28 17:06:57,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:57,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664536397] [2019-11-28 17:06:57,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:57,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664536397] [2019-11-28 17:06:57,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434972652] [2019-11-28 17:06:57,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:57,480 WARN L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 17:06:57,486 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:57,579 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:57,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:57,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-28 17:06:57,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752547] [2019-11-28 17:06:57,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 17:06:57,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:57,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 17:06:57,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-28 17:06:57,603 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 10 states. [2019-11-28 17:06:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:57,833 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-28 17:06:57,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 17:06:57,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-11-28 17:06:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:57,834 INFO L225 Difference]: With dead ends: 12 [2019-11-28 17:06:57,834 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:06:57,835 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2019-11-28 17:06:57,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:06:57,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:06:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:06:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:06:57,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-28 17:06:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:57,837 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:06:57,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 17:06:57,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:06:57,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:06:58,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:58,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:06:58,120 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:06:58,121 INFO L249 CegarLoopResult]: At program point L23(lines 10 24) the Hoare annotation is: true [2019-11-28 17:06:58,121 INFO L246 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-28 17:06:58,121 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 17:06:58,121 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:06:58,121 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:06:58,122 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 17:06:58,123 INFO L242 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~cnt~0)) (.cse1 (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= ULTIMATE.start_main_~res~0 .cse1))) [2019-11-28 17:06:58,123 INFO L246 CegarLoopResult]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2019-11-28 17:06:58,123 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-28 17:06:58,124 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 17:06:58,125 INFO L242 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-28 17:06:58,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:06:58 BoogieIcfgContainer [2019-11-28 17:06:58,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:06:58,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:06:58,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:06:58,157 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:06:58,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:56" (3/4) ... [2019-11-28 17:06:58,163 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:06:58,178 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 17:06:58,178 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:06:58,247 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:06:58,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:06:58,250 INFO L168 Benchmark]: Toolchain (without parser) took 2099.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -56.4 MB). Peak memory consumption was 84.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:58,251 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:58,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.90 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:58,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:58,253 INFO L168 Benchmark]: Boogie Preprocessor took 20.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:58,254 INFO L168 Benchmark]: RCFGBuilder took 211.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:58,255 INFO L168 Benchmark]: TraceAbstraction took 1456.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.0 MB). Peak memory consumption was 97.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:58,256 INFO L168 Benchmark]: Witness Printer took 90.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:58,260 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 226.90 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 87.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 211.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1456.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.0 MB). Peak memory consumption was 97.0 MB. Max. memory is 11.5 GB. * Witness Printer took 90.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 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: 18]: Loop Invariant Derived loop invariant: (res + cnt <= a + b && a + b <= res + cnt) && res <= a + b - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 31 SDslu, 22 SDs, 0 SdLazy, 45 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 25 HoareAnnotationTreeSize, 3 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 859 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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...