./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60fa12f4a8e344f82de5faf31b8f2cbfbaaacd93 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:16:53,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:16:53,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:16:53,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:16:53,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:16:53,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:16:53,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:16:53,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:16:53,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:16:53,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:16:53,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:16:53,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:16:53,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:16:53,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:16:53,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:16:53,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:16:53,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:16:53,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:16:53,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:16:53,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:16:53,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:16:53,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:16:53,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:16:53,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:16:53,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:16:53,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:16:53,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:16:53,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:16:53,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:16:53,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:16:53,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:16:53,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:16:53,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:16:53,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:16:53,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:16:53,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:16:53,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:16:53,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:16:53,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:16:53,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:16:53,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:16:53,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:16:53,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:16:53,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:16:53,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:16:53,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:16:53,473 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:16:53,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:16:53,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:16:53,474 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:16:53,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:16:53,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:16:53,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:16:53,476 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:16:53,476 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:16:53,477 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:16:53,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:16:53,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:16:53,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:16:53,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:16:53,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:16:53,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:16:53,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:16:53,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:16:53,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:16:53,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:16:53,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:16:53,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:16:53,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:16:53,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:16:53,481 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 60fa12f4a8e344f82de5faf31b8f2cbfbaaacd93 [2020-10-20 06:16:53,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:16:53,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:16:53,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:16:53,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:16:53,768 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:16:53,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2020-10-20 06:16:53,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399f00468/ae7bdd4abf9d4e7aa7e21bb47db8c0a3/FLAG5ca38357b [2020-10-20 06:16:54,325 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:16:54,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2020-10-20 06:16:54,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399f00468/ae7bdd4abf9d4e7aa7e21bb47db8c0a3/FLAG5ca38357b [2020-10-20 06:16:54,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399f00468/ae7bdd4abf9d4e7aa7e21bb47db8c0a3 [2020-10-20 06:16:54,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:16:54,693 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:16:54,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:54,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:16:54,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:16:54,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:54" (1/1) ... [2020-10-20 06:16:54,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45df6c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:54, skipping insertion in model container [2020-10-20 06:16:54,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:54" (1/1) ... [2020-10-20 06:16:54,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:16:54,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:16:55,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:55,086 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:16:55,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:55,129 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:16:55,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55 WrapperNode [2020-10-20 06:16:55,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:55,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:16:55,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:16:55,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:16:55,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (1/1) ... [2020-10-20 06:16:55,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (1/1) ... [2020-10-20 06:16:55,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (1/1) ... [2020-10-20 06:16:55,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (1/1) ... [2020-10-20 06:16:55,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (1/1) ... [2020-10-20 06:16:55,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (1/1) ... [2020-10-20 06:16:55,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (1/1) ... [2020-10-20 06:16:55,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:16:55,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:16:55,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:16:55,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:16:55,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (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 06:16:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:16:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:16:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2020-10-20 06:16:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:16:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-20 06:16:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2020-10-20 06:16:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:16:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:16:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:16:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:16:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:16:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:16:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:16:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:16:55,610 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:16:55,610 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 06:16:55,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:55 BoogieIcfgContainer [2020-10-20 06:16:55,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:16:55,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:16:55,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:16:55,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:16:55,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:16:54" (1/3) ... [2020-10-20 06:16:55,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326a4c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:55, skipping insertion in model container [2020-10-20 06:16:55,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:55" (2/3) ... [2020-10-20 06:16:55,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326a4c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:55, skipping insertion in model container [2020-10-20 06:16:55,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:55" (3/3) ... [2020-10-20 06:16:55,621 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-2.c [2020-10-20 06:16:55,632 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:16:55,639 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-20 06:16:55,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 06:16:55,672 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:16:55,672 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:16:55,672 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:16:55,672 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:16:55,673 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:16:55,673 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:16:55,673 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:16:55,673 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:16:55,686 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-20 06:16:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:16:55,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:55,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:55,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:55,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:55,703 INFO L82 PathProgramCache]: Analyzing trace with hash 543879226, now seen corresponding path program 1 times [2020-10-20 06:16:55,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:55,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514196675] [2020-10-20 06:16:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:55,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:55,955 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 06:16:55,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514196675] [2020-10-20 06:16:55,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:55,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:16:55,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12402002] [2020-10-20 06:16:55,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:55,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:55,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:55,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:55,981 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-10-20 06:16:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:56,134 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-10-20 06:16:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:16:56,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 06:16:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:56,146 INFO L225 Difference]: With dead ends: 42 [2020-10-20 06:16:56,147 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 06:16:56,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 06:16:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 06:16:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2020-10-20 06:16:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:16:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-20 06:16:56,188 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2020-10-20 06:16:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:56,188 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-20 06:16:56,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-20 06:16:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:16:56,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:56,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:56,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:16:56,191 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:56,191 INFO L82 PathProgramCache]: Analyzing trace with hash 543879227, now seen corresponding path program 1 times [2020-10-20 06:16:56,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:56,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910875386] [2020-10-20 06:16:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:56,363 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 06:16:56,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910875386] [2020-10-20 06:16:56,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:56,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:16:56,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040012576] [2020-10-20 06:16:56,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:16:56,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:56,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:16:56,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:56,367 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-10-20 06:16:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:56,508 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-10-20 06:16:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:16:56,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-20 06:16:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:56,510 INFO L225 Difference]: With dead ends: 24 [2020-10-20 06:16:56,510 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 06:16:56,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:16:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 06:16:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-20 06:16:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 06:16:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-20 06:16:56,516 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2020-10-20 06:16:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:56,516 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-20 06:16:56,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:16:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-20 06:16:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:16:56,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:56,518 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:56,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:16:56,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2089391026, now seen corresponding path program 1 times [2020-10-20 06:16:56,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:56,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755011561] [2020-10-20 06:16:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:56,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755011561] [2020-10-20 06:16:56,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147431105] [2020-10-20 06:16:56,657 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 06:16:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:56,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:16:56,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:56,815 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:16:56,816 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-10-20 06:16:56,818 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:16:56,839 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:16:56,847 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:16:56,848 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:16:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:56,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:16:56,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-20 06:16:56,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518068071] [2020-10-20 06:16:56,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:16:56,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:56,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:16:56,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:16:56,887 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-10-20 06:16:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:57,034 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-20 06:16:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:16:57,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-20 06:16:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:57,036 INFO L225 Difference]: With dead ends: 27 [2020-10-20 06:16:57,036 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 06:16:57,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 06:16:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-20 06:16:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 06:16:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-20 06:16:57,042 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2020-10-20 06:16:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:57,043 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-20 06:16:57,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:16:57,043 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-20 06:16:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:16:57,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:57,044 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:57,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 06:16:57,257 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:57,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1912985381, now seen corresponding path program 2 times [2020-10-20 06:16:57,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:57,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466289705] [2020-10-20 06:16:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:57,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466289705] [2020-10-20 06:16:57,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504399290] [2020-10-20 06:16:57,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 06:16:57,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:16:57,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:16:57,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:16:57,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:57,493 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:16:57,494 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-10-20 06:16:57,495 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:16:57,514 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:16:57,517 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:16:57,517 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:16:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:57,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:16:57,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2020-10-20 06:16:57,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415976033] [2020-10-20 06:16:57,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:16:57,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:57,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:16:57,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:16:57,622 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-10-20 06:16:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:57,673 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-20 06:16:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:16:57,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-20 06:16:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:57,676 INFO L225 Difference]: With dead ends: 26 [2020-10-20 06:16:57,677 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 06:16:57,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:16:57,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 06:16:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-20 06:16:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 06:16:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-20 06:16:57,682 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2020-10-20 06:16:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:57,682 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-20 06:16:57,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:16:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-20 06:16:57,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:16:57,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:57,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:57,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:16:57,894 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:57,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2027302431, now seen corresponding path program 1 times [2020-10-20 06:16:57,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:57,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237290261] [2020-10-20 06:16:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:57,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:16:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:16:58,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237290261] [2020-10-20 06:16:58,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:58,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:16:58,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081742012] [2020-10-20 06:16:58,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:16:58,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:58,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:16:58,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:16:58,028 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-20 06:16:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:58,149 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-10-20 06:16:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:16:58,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-20 06:16:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:58,150 INFO L225 Difference]: With dead ends: 23 [2020-10-20 06:16:58,150 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 06:16:58,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:16:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 06:16:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-20 06:16:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 06:16:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-20 06:16:58,155 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2020-10-20 06:16:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:58,155 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-20 06:16:58,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:16:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-20 06:16:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:16:58,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:58,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:58,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:16:58,157 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2027302432, now seen corresponding path program 1 times [2020-10-20 06:16:58,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:58,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171149894] [2020-10-20 06:16:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:58,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:16:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:58,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171149894] [2020-10-20 06:16:58,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455265197] [2020-10-20 06:16:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:16:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:58,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:16:58,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:58,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:16:58,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-10-20 06:16:58,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347255121] [2020-10-20 06:16:58,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:16:58,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:58,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:16:58,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:16:58,308 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-10-20 06:16:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:58,385 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-20 06:16:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:16:58,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-20 06:16:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:58,386 INFO L225 Difference]: With dead ends: 28 [2020-10-20 06:16:58,386 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 06:16:58,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:16:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 06:16:58,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-20 06:16:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 06:16:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-20 06:16:58,390 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2020-10-20 06:16:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:58,391 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-20 06:16:58,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:16:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-20 06:16:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:16:58,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:58,392 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:58,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:16:58,602 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:58,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:58,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1378383287, now seen corresponding path program 2 times [2020-10-20 06:16:58,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:58,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571037351] [2020-10-20 06:16:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:58,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:58,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:16:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:58,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571037351] [2020-10-20 06:16:58,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524493475] [2020-10-20 06:16:58,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:16:58,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 06:16:58,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:16:58,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 06:16:58,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:58,755 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:16:58,755 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-10-20 06:16:58,756 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:16:58,773 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:16:58,775 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:16:58,775 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:16:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-20 06:16:58,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:16:58,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-10-20 06:16:58,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302543955] [2020-10-20 06:16:58,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:16:58,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:58,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:16:58,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:16:58,842 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2020-10-20 06:16:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:58,925 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-10-20 06:16:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:16:58,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-20 06:16:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:58,927 INFO L225 Difference]: With dead ends: 30 [2020-10-20 06:16:58,927 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 06:16:58,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:16:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 06:16:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-20 06:16:58,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 06:16:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-20 06:16:58,931 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2020-10-20 06:16:58,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:58,931 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-20 06:16:58,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:16:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-20 06:16:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:58,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:58,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:59,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:16:59,144 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:59,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2030859700, now seen corresponding path program 1 times [2020-10-20 06:16:59,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:59,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137744941] [2020-10-20 06:16:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:59,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:16:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:16:59,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137744941] [2020-10-20 06:16:59,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112527338] [2020-10-20 06:16:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:16:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:59,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:16:59,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:16:59,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:16:59,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2020-10-20 06:16:59,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13955331] [2020-10-20 06:16:59,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:16:59,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:59,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:16:59,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:16:59,333 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-10-20 06:16:59,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:59,433 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-10-20 06:16:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:16:59,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-20 06:16:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:59,437 INFO L225 Difference]: With dead ends: 33 [2020-10-20 06:16:59,437 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 06:16:59,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:59,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 06:16:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-20 06:16:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 06:16:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-20 06:16:59,447 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-10-20 06:16:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:59,448 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-20 06:16:59,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:16:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-20 06:16:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:16:59,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:59,449 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:59,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:16:59,660 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:16:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:59,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1845681667, now seen corresponding path program 2 times [2020-10-20 06:16:59,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:59,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580370623] [2020-10-20 06:16:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:59,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:16:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:16:59,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580370623] [2020-10-20 06:16:59,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196796707] [2020-10-20 06:16:59,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:16:59,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:16:59,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:16:59,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:16:59,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:16:59,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:16:59,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-10-20 06:16:59,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059786767] [2020-10-20 06:16:59,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:16:59,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:59,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:16:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:59,834 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-10-20 06:16:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:59,918 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-10-20 06:16:59,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:16:59,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-20 06:16:59,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:59,920 INFO L225 Difference]: With dead ends: 36 [2020-10-20 06:16:59,920 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 06:16:59,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:16:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 06:16:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-20 06:16:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 06:16:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-20 06:16:59,925 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 30 [2020-10-20 06:16:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:59,926 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-20 06:16:59,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:16:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-20 06:16:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 06:16:59,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:59,927 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:00,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:00,138 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-20 06:17:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:00,138 INFO L82 PathProgramCache]: Analyzing trace with hash 513923820, now seen corresponding path program 3 times [2020-10-20 06:17:00,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:00,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327515167] [2020-10-20 06:17:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:00,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:17:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:17:00,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327515167] [2020-10-20 06:17:00,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146899890] [2020-10-20 06:17:00,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:00,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 06:17:00,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:00,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 06:17:00,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:00,335 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:17:00,336 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-10-20 06:17:00,336 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:17:00,353 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:17:00,355 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:17:00,355 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:17:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-20 06:17:00,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:17:00,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2020-10-20 06:17:00,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446914742] [2020-10-20 06:17:00,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:17:00,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:00,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:17:00,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:17:00,486 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 8 states. [2020-10-20 06:17:00,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:00,634 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-10-20 06:17:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:17:00,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-20 06:17:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:00,636 INFO L225 Difference]: With dead ends: 35 [2020-10-20 06:17:00,636 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:17:00,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:17:00,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:17:00,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:17:00,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:17:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:17:00,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-20 06:17:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:00,638 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:17:00,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:17:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:17:00,638 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:17:00,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 06:17:00,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:17:00 BoogieIcfgContainer [2020-10-20 06:17:00,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:17:00,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:17:00,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:17:00,846 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:17:00,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:55" (3/4) ... [2020-10-20 06:17:00,850 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:17:00,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:17:00,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:17:00,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers [2020-10-20 06:17:00,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-10-20 06:17:00,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 06:17:00,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:17:00,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:17:00,901 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:17:00,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:17:00,904 INFO L168 Benchmark]: Toolchain (without parser) took 6214.61 ms. Allocated memory was 33.6 MB in the beginning and 64.0 MB in the end (delta: 30.4 MB). Free memory was 10.1 MB in the beginning and 14.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:00,905 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory was 17.5 MB in the beginning and 17.4 MB in the end (delta: 57.7 kB). Peak memory consumption was 57.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:17:00,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.18 ms. Allocated memory was 33.6 MB in the beginning and 43.0 MB in the end (delta: 9.4 MB). Free memory was 9.2 MB in the beginning and 25.4 MB in the end (delta: -16.2 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:00,909 INFO L168 Benchmark]: Boogie Preprocessor took 66.54 ms. Allocated memory is still 43.0 MB. Free memory was 25.4 MB in the beginning and 23.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:00,910 INFO L168 Benchmark]: RCFGBuilder took 414.24 ms. Allocated memory was 43.0 MB in the beginning and 42.5 MB in the end (delta: -524.3 kB). Free memory was 23.6 MB in the beginning and 18.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:00,910 INFO L168 Benchmark]: TraceAbstraction took 5231.97 ms. Allocated memory was 42.5 MB in the beginning and 64.0 MB in the end (delta: 21.5 MB). Free memory was 18.4 MB in the beginning and 17.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:00,911 INFO L168 Benchmark]: Witness Printer took 56.52 ms. Allocated memory is still 64.0 MB. Free memory was 17.0 MB in the beginning and 14.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:00,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory was 17.5 MB in the beginning and 17.4 MB in the end (delta: 57.7 kB). Peak memory consumption was 57.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 436.18 ms. Allocated memory was 33.6 MB in the beginning and 43.0 MB in the end (delta: 9.4 MB). Free memory was 9.2 MB in the beginning and 25.4 MB in the end (delta: -16.2 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 66.54 ms. Allocated memory is still 43.0 MB. Free memory was 25.4 MB in the beginning and 23.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 414.24 ms. Allocated memory was 43.0 MB in the beginning and 42.5 MB in the end (delta: -524.3 kB). Free memory was 23.6 MB in the beginning and 18.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5231.97 ms. Allocated memory was 42.5 MB in the beginning and 64.0 MB in the end (delta: 21.5 MB). Free memory was 18.4 MB in the beginning and 17.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 14.3 GB. * Witness Printer took 56.52 ms. Allocated memory is still 64.0 MB. Free memory was 17.0 MB in the beginning and 14.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 178 SDslu, 312 SDs, 0 SdLazy, 431 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 161 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=9, 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, 10 MinimizatonAttempts, 25 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 358 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 40545 SizeOfPredicates, 11 NumberOfNonLiveVariables, 725 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 71/207 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...