./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/lu.cmp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/loops/lu.cmp.c -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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 640282f6b7135e6e195eda6d48d5761dd6ed3cc4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:54:47,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:54:47,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:54:47,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:54:47,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:54:47,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:54:47,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:54:47,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:54:47,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:54:47,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:54:47,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:54:47,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:54:47,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:54:47,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:54:47,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:54:47,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:54:47,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:54:47,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:54:47,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:54:47,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:54:47,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:54:47,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:54:47,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:54:47,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:54:47,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:54:47,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:54:47,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:54:47,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:54:47,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:54:47,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:54:47,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:54:47,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:54:47,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:54:47,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:54:47,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:54:47,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:54:47,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:54:47,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:54:47,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:54:47,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:54:47,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:54:47,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:54:47,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:54:47,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:54:47,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:54:47,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:54:47,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:54:47,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:54:47,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:54:47,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:54:47,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:54:47,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:54:47,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:54:47,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:54:47,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:54:47,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:54:47,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:54:47,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:54:47,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:54:47,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:54:47,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:54:47,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:54:47,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:54:47,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:54:47,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:54:47,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:54:47,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:54:47,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:54:47,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:54:47,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:54:47,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:54:47,952 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(reach_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 -> 640282f6b7135e6e195eda6d48d5761dd6ed3cc4 [2020-10-20 00:54:48,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:54:48,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:54:48,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:54:48,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:54:48,200 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:54:48,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/lu.cmp.c [2020-10-20 00:54:48,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174bc68b4/f69723735ff941ecbde6888d3ed82841/FLAGb1b6e3a7b [2020-10-20 00:54:48,840 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:54:48,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c [2020-10-20 00:54:48,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174bc68b4/f69723735ff941ecbde6888d3ed82841/FLAGb1b6e3a7b [2020-10-20 00:54:49,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174bc68b4/f69723735ff941ecbde6888d3ed82841 [2020-10-20 00:54:49,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:54:49,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:54:49,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:54:49,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:54:49,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:54:49,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45089688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49, skipping insertion in model container [2020-10-20 00:54:49,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:54:49,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:54:49,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:54:49,394 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:54:49,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:54:49,449 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:54:49,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49 WrapperNode [2020-10-20 00:54:49,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:54:49,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:54:49,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:54:49,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:54:49,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:54:49,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:54:49,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:54:49,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:54:49,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (1/1) ... [2020-10-20 00:54:49,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:54:49,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:54:49,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:54:49,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:54:49,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (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 [2020-10-20 00:54:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:54:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:54:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:54:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:54:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:54:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:54:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:54:50,190 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:54:50,190 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-10-20 00:54:50,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:54:50 BoogieIcfgContainer [2020-10-20 00:54:50,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:54:50,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:54:50,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:54:50,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:54:50,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:54:49" (1/3) ... [2020-10-20 00:54:50,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ea2e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:54:50, skipping insertion in model container [2020-10-20 00:54:50,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:54:49" (2/3) ... [2020-10-20 00:54:50,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ea2e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:54:50, skipping insertion in model container [2020-10-20 00:54:50,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:54:50" (3/3) ... [2020-10-20 00:54:50,206 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-10-20 00:54:50,217 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:54:50,228 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:54:50,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:54:50,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:54:50,264 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:54:50,264 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:54:50,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:54:50,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:54:50,265 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:54:50,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:54:50,265 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:54:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-20 00:54:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:54:50,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:54:50,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:54:50,288 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:54:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:54:50,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2020-10-20 00:54:50,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:54:50,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314239047] [2020-10-20 00:54:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:54:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:54:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:54:50,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314239047] [2020-10-20 00:54:50,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:54:50,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:54:50,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273877940] [2020-10-20 00:54:50,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:54:50,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:54:50,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:54:50,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:54:50,528 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-10-20 00:54:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:54:50,612 INFO L93 Difference]: Finished difference Result 103 states and 160 transitions. [2020-10-20 00:54:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:54:50,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 00:54:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:54:50,625 INFO L225 Difference]: With dead ends: 103 [2020-10-20 00:54:50,626 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 00:54:50,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:54:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 00:54:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2020-10-20 00:54:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 00:54:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-20 00:54:50,665 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2020-10-20 00:54:50,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:54:50,666 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-20 00:54:50,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:54:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-20 00:54:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:54:50,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:54:50,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:54:50,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:54:50,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:54:50,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:54:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1948892579, now seen corresponding path program 1 times [2020-10-20 00:54:50,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:54:50,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441861921] [2020-10-20 00:54:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:54:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:54:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 00:54:50,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441861921] [2020-10-20 00:54:50,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:54:50,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:54:50,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863583882] [2020-10-20 00:54:50,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:54:50,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:54:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:54:50,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:54:50,791 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-10-20 00:54:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:54:50,840 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-10-20 00:54:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:54:50,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 00:54:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:54:50,842 INFO L225 Difference]: With dead ends: 26 [2020-10-20 00:54:50,842 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 00:54:50,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:54:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 00:54:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-10-20 00:54:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 00:54:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-20 00:54:50,850 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2020-10-20 00:54:50,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:54:50,850 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-20 00:54:50,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:54:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-20 00:54:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 00:54:50,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:54:50,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:54:50,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:54:50,853 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:54:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:54:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1555702768, now seen corresponding path program 1 times [2020-10-20 00:54:50,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:54:50,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749491808] [2020-10-20 00:54:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:54:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:54:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:54:50,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749491808] [2020-10-20 00:54:50,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320653920] [2020-10-20 00:54:50,982 INFO L95 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 [2020-10-20 00:54:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:54:51,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 00:54:51,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:54:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 00:54:51,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:54:51,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-20 00:54:51,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166292032] [2020-10-20 00:54:51,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:54:51,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:54:51,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:54:51,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:54:51,169 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-10-20 00:54:51,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:54:51,449 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-10-20 00:54:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 00:54:51,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-20 00:54:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:54:51,453 INFO L225 Difference]: With dead ends: 69 [2020-10-20 00:54:51,453 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 00:54:51,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2020-10-20 00:54:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 00:54:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2020-10-20 00:54:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 00:54:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-20 00:54:51,465 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 21 [2020-10-20 00:54:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:54:51,466 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-20 00:54:51,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:54:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-20 00:54:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-20 00:54:51,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:54:51,468 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2020-10-20 00:54:51,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 00:54:51,684 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:54:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:54:51,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1295506232, now seen corresponding path program 1 times [2020-10-20 00:54:51,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:54:51,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397772753] [2020-10-20 00:54:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:54:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:54:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-20 00:54:51,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397772753] [2020-10-20 00:54:51,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770680630] [2020-10-20 00:54:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:54:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:54:51,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 00:54:51,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:54:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-20 00:54:52,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:54:52,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2020-10-20 00:54:52,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426973260] [2020-10-20 00:54:52,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 00:54:52,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:54:52,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 00:54:52,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:54:52,061 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 9 states. [2020-10-20 00:54:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:54:52,337 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2020-10-20 00:54:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 00:54:52,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-20 00:54:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:54:52,338 INFO L225 Difference]: With dead ends: 104 [2020-10-20 00:54:52,339 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:54:52,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2020-10-20 00:54:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:54:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:54:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:54:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:54:52,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-10-20 00:54:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:54:52,342 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:54:52,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 00:54:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:54:52,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:54:52,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:54:52,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:54:52,678 INFO L274 CegarLoopResult]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2020-10-20 00:54:52,679 INFO L270 CegarLoopResult]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (<= 5 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 5))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 .cse1) (and (= ULTIMATE.start_main_~i~0 0) .cse0 .cse1))) [2020-10-20 00:54:52,679 INFO L274 CegarLoopResult]: For program point L93-4(lines 93 104) no Hoare annotation was computed. [2020-10-20 00:54:52,679 INFO L274 CegarLoopResult]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2020-10-20 00:54:52,679 INFO L270 CegarLoopResult]: At program point L118-3(lines 118 136) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,679 INFO L274 CegarLoopResult]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2020-10-20 00:54:52,679 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:54:52,679 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:54:52,680 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:54:52,680 INFO L270 CegarLoopResult]: At program point L153(lines 111 155) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,680 INFO L274 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-10-20 00:54:52,680 INFO L274 CegarLoopResult]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2020-10-20 00:54:52,680 INFO L274 CegarLoopResult]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2020-10-20 00:54:52,680 INFO L270 CegarLoopResult]: At program point L129-3(lines 129 135) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,680 INFO L270 CegarLoopResult]: At program point L96-3(lines 96 101) the Hoare annotation is: (let ((.cse0 (<= 5 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 5))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~i~0 5) .cse0 .cse1) (and (= ULTIMATE.start_main_~i~0 0) .cse0 .cse1))) [2020-10-20 00:54:52,681 INFO L274 CegarLoopResult]: For program point L96-4(lines 96 101) no Hoare annotation was computed. [2020-10-20 00:54:52,681 INFO L274 CegarLoopResult]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2020-10-20 00:54:52,681 INFO L270 CegarLoopResult]: At program point L121-3(lines 121 128) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,681 INFO L274 CegarLoopResult]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2020-10-20 00:54:52,681 INFO L274 CegarLoopResult]: For program point L80(lines 80 81) no Hoare annotation was computed. [2020-10-20 00:54:52,681 INFO L274 CegarLoopResult]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2020-10-20 00:54:52,681 INFO L270 CegarLoopResult]: At program point L146-3(lines 146 152) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,682 INFO L274 CegarLoopResult]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2020-10-20 00:54:52,682 INFO L274 CegarLoopResult]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2020-10-20 00:54:52,682 INFO L274 CegarLoopResult]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2020-10-20 00:54:52,682 INFO L270 CegarLoopResult]: At program point L138-3(lines 138 144) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,682 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-20 00:54:52,682 INFO L274 CegarLoopResult]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2020-10-20 00:54:52,682 INFO L270 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~i~0 5) (<= 5 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 5)) [2020-10-20 00:54:52,683 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-20 00:54:52,683 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:54:52,683 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:54:52,683 INFO L270 CegarLoopResult]: At program point L82(lines 76 83) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,683 INFO L274 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-10-20 00:54:52,683 INFO L274 CegarLoopResult]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2020-10-20 00:54:52,684 INFO L274 CegarLoopResult]: For program point L99-2(line 99) no Hoare annotation was computed. [2020-10-20 00:54:52,684 INFO L270 CegarLoopResult]: At program point L132-3(lines 132 133) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,684 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:54:52,684 INFO L274 CegarLoopResult]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2020-10-20 00:54:52,684 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-20 00:54:52,684 INFO L274 CegarLoopResult]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2020-10-20 00:54:52,684 INFO L274 CegarLoopResult]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2020-10-20 00:54:52,684 INFO L270 CegarLoopResult]: At program point L149-3(lines 149 150) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,685 INFO L274 CegarLoopResult]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2020-10-20 00:54:52,685 INFO L270 CegarLoopResult]: At program point L108(lines 85 109) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,685 INFO L274 CegarLoopResult]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2020-10-20 00:54:52,685 INFO L270 CegarLoopResult]: At program point L141-3(lines 141 142) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,685 INFO L274 CegarLoopResult]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2020-10-20 00:54:52,697 INFO L274 CegarLoopResult]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2020-10-20 00:54:52,698 INFO L270 CegarLoopResult]: At program point L125-3(lines 125 126) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-20 00:54:52,698 INFO L274 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-10-20 00:54:52,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:54:52 BoogieIcfgContainer [2020-10-20 00:54:52,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:54:52,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:54:52,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:54:52,720 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:54:52,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:54:50" (3/4) ... [2020-10-20 00:54:52,724 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:54:52,740 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 00:54:52,740 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 00:54:52,741 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:54:52,741 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:54:52,855 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:54:52,855 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:54:52,857 INFO L168 Benchmark]: Toolchain (without parser) took 3770.38 ms. Allocated memory was 42.5 MB in the beginning and 56.1 MB in the end (delta: 13.6 MB). Free memory was 22.2 MB in the beginning and 30.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:54:52,857 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 32.0 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:54:52,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.17 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.4 MB in the beginning and 19.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:54:52,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.54 ms. Allocated memory is still 43.0 MB. Free memory was 19.4 MB in the beginning and 16.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:54:52,864 INFO L168 Benchmark]: Boogie Preprocessor took 65.63 ms. Allocated memory is still 43.0 MB. Free memory was 16.8 MB in the beginning and 14.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:54:52,864 INFO L168 Benchmark]: RCFGBuilder took 618.61 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 14.6 MB in the beginning and 21.1 MB in the end (delta: -6.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:54:52,865 INFO L168 Benchmark]: TraceAbstraction took 2523.28 ms. Allocated memory was 45.1 MB in the beginning and 56.1 MB in the end (delta: 11.0 MB). Free memory was 20.6 MB in the beginning and 36.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:54:52,865 INFO L168 Benchmark]: Witness Printer took 135.54 ms. Allocated memory is still 56.1 MB. Free memory was 36.3 MB in the beginning and 30.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:54:52,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 32.0 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 355.17 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.4 MB in the beginning and 19.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 59.54 ms. Allocated memory is still 43.0 MB. Free memory was 19.4 MB in the beginning and 16.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 65.63 ms. Allocated memory is still 43.0 MB. Free memory was 16.8 MB in the beginning and 14.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 618.61 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 14.6 MB in the beginning and 21.1 MB in the end (delta: -6.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2523.28 ms. Allocated memory was 45.1 MB in the beginning and 56.1 MB in the end (delta: 11.0 MB). Free memory was 20.6 MB in the beginning and 36.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 14.3 GB. * Witness Printer took 135.54 ms. Allocated memory is still 56.1 MB. Free memory was 36.3 MB in the beginning and 30.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 146]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: ((!(0 == cond) && 5 <= n) && n <= 5) || ((i == 0 && 5 <= n) && n <= 5) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (((!(0 == cond) && i <= 5) && 5 <= n) && n <= 5) || ((i == 0 && 5 <= n) && n <= 5) - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((!(0 == cond) && i <= 5) && 5 <= n) && n <= 5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 267 SDslu, 103 SDs, 0 SdLazy, 167 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 45 NumberOfFragments, 97 HoareAnnotationTreeSize, 15 FomulaSimplifications, 328 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 11816 SizeOfPredicates, 4 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 146/209 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...