./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gsv2008.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/gsv2008.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 225f0ddf9f4fc2bb07a34316827f4c052bf2e72a ...................................................................................................................................................................................................................................................................................................................................................... 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 17:06:52,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:06:52,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:06:52,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:06:52,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:06:52,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:06:52,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:06:52,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:06:52,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:06:52,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:06:52,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:06:52,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:06:52,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:06:52,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:06:52,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:06:52,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:06:52,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:06:52,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:06:52,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:06:52,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:06:52,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:06:52,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:06:52,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:06:52,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:06:52,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:06:52,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:06:52,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:06:52,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:06:52,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:06:52,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:06:52,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:06:52,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:06:52,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:06:52,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:06:52,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:06:52,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:06:52,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:06:52,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:06:52,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:06:52,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:06:52,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:06:52,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:06:52,858 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:06:52,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:06:52,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:06:52,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:06:52,864 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:06:52,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:06:52,864 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:06:52,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:06:52,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:06:52,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:06:52,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:06:52,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:06:52,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:06:52,867 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:06:52,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:06:52,868 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:06:52,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:06:52,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:06:52,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:06:52,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:06:52,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:06:52,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:52,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:06:52,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:06:52,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:06:52,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:06:52,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:06:52,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:06:52,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:06:52,872 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 -> 225f0ddf9f4fc2bb07a34316827f4c052bf2e72a [2019-11-28 17:06:53,183 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:06:53,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:06:53,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:06:53,200 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:06:53,201 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:06:53,201 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.i [2019-11-28 17:06:53,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f09166692/ec4117eb06ee4250a09b5e07143c9b83/FLAG4b9b66d9b [2019-11-28 17:06:53,763 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:06:53,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i [2019-11-28 17:06:53,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f09166692/ec4117eb06ee4250a09b5e07143c9b83/FLAG4b9b66d9b [2019-11-28 17:06:54,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f09166692/ec4117eb06ee4250a09b5e07143c9b83 [2019-11-28 17:06:54,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:06:54,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:06:54,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:54,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:06:54,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:06:54,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212f942a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54, skipping insertion in model container [2019-11-28 17:06:54,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:06:54,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:06:54,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:54,348 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:06:54,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:54,382 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:06:54,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54 WrapperNode [2019-11-28 17:06:54,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:54,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:54,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:06:54,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:06:54,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:54,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:06:54,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:06:54,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:06:54,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (1/1) ... [2019-11-28 17:06:54,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:06:54,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:06:54,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:06:54,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:06:54,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (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 17:06:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:06:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:06:54,697 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:06:54,697 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:06:54,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:54 BoogieIcfgContainer [2019-11-28 17:06:54,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:06:54,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:06:54,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:06:54,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:06:54,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:54" (1/3) ... [2019-11-28 17:06:54,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f35b961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:54, skipping insertion in model container [2019-11-28 17:06:54,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:54" (2/3) ... [2019-11-28 17:06:54,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f35b961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:54, skipping insertion in model container [2019-11-28 17:06:54,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:54" (3/3) ... [2019-11-28 17:06:54,705 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2019-11-28 17:06:54,712 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:06:54,719 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:06:54,731 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:06:54,755 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:06:54,755 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:06:54,755 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:06:54,755 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:06:54,756 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:06:54,756 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:06:54,756 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:06:54,756 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:06:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 17:06:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:06:54,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:54,777 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:06:54,778 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:54,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:54,782 INFO L82 PathProgramCache]: Analyzing trace with hash 922199370, now seen corresponding path program 1 times [2019-11-28 17:06:54,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:54,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507669362] [2019-11-28 17:06:54,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:54,886 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 17:06:54,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507669362] [2019-11-28 17:06:54,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:54,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:06:54,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318742952] [2019-11-28 17:06:54,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:06:54,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:54,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:06:54,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:06:54,905 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-28 17:06:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:54,919 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-28 17:06:54,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:06:54,920 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 17:06:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:54,928 INFO L225 Difference]: With dead ends: 19 [2019-11-28 17:06:54,929 INFO L226 Difference]: Without dead ends: 7 [2019-11-28 17:06:54,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:06:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-28 17:06:54,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 17:06:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 17:06:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-28 17:06:54,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2019-11-28 17:06:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:54,960 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-28 17:06:54,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:06:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-28 17:06:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:06:54,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:54,961 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:06:54,961 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash 922080206, now seen corresponding path program 1 times [2019-11-28 17:06:54,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:54,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584163143] [2019-11-28 17:06:54,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:55,008 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 17:06:55,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584163143] [2019-11-28 17:06:55,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:55,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:06:55,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414181559] [2019-11-28 17:06:55,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:06:55,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:55,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:06:55,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:06:55,011 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 3 states. [2019-11-28 17:06:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:55,028 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-28 17:06:55,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:06:55,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 17:06:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:55,030 INFO L225 Difference]: With dead ends: 12 [2019-11-28 17:06:55,030 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 17:06:55,031 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:06:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 17:06:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 17:06:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 17:06:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 17:06:55,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-28 17:06:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:55,040 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 17:06:55,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:06:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-28 17:06:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:06:55,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:55,043 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:55,043 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:55,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1478619311, now seen corresponding path program 1 times [2019-11-28 17:06:55,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:55,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590861257] [2019-11-28 17:06:55,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:55,150 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 17:06:55,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590861257] [2019-11-28 17:06:55,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797340954] [2019-11-28 17:06:55,152 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 17:06:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:55,213 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 17:06:55,219 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:55,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:55,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 17:06:55,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2019-11-28 17:06:55,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916503463] [2019-11-28 17:06:55,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:06:55,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:55,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:06:55,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:06:55,309 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2019-11-28 17:06:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:55,377 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-11-28 17:06:55,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:06:55,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 17:06:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:55,379 INFO L225 Difference]: With dead ends: 8 [2019-11-28 17:06:55,379 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:06:55,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-28 17:06:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:06:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:06:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:06:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:06:55,381 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-28 17:06:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:55,381 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:06:55,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:06:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:06:55,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:06:55,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:55,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:06:55,603 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:06:55,603 INFO L242 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~x~0 2) ULTIMATE.start_main_~y~0) (<= (+ ULTIMATE.start_main_~x~0 50) 0)) [2019-11-28 17:06:55,603 INFO L246 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2019-11-28 17:06:55,605 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 17:06:55,605 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:06:55,605 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:06:55,605 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 17:06:55,606 INFO L249 CegarLoopResult]: At program point L20(lines 10 21) the Hoare annotation is: true [2019-11-28 17:06:55,606 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-28 17:06:55,606 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 17:06:55,606 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-28 17:06:55,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:06:55 BoogieIcfgContainer [2019-11-28 17:06:55,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:06:55,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:06:55,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:06:55,624 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:06:55,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:54" (3/4) ... [2019-11-28 17:06:55,629 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:06:55,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 17:06:55,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:06:55,680 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:06:55,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:06:55,683 INFO L168 Benchmark]: Toolchain (without parser) took 1554.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -53.2 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:55,683 INFO L168 Benchmark]: CDTParser took 0.28 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 17:06:55,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.88 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 17:06:55,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.52 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:55,685 INFO L168 Benchmark]: Boogie Preprocessor took 77.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -138.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:55,686 INFO L168 Benchmark]: RCFGBuilder took 212.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:55,687 INFO L168 Benchmark]: TraceAbstraction took 924.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:55,687 INFO L168 Benchmark]: Witness Printer took 56.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:55,691 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 253.88 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 24.52 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -138.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 212.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 924.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. * Witness Printer took 56.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x + 2 <= y || x + 50 <= 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 6 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 312 SizeOfPredicates, 4 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 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...