./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/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 0.1.25-906a4fb [2020-10-19 18:24:02,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:24:02,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:24:02,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:24:02,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:24:02,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:24:02,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:24:02,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:24:02,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:24:02,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:24:02,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:24:02,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:24:02,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:24:02,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:24:02,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:24:02,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:24:02,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:24:02,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:24:02,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:24:02,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:24:02,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:24:02,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:24:02,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:24:02,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:24:02,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:24:02,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:24:02,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:24:02,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:24:02,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:24:02,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:24:02,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:24:02,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:24:02,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:24:02,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:24:02,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:24:02,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:24:02,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:24:02,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:24:02,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:24:02,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:24:02,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:24:02,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:24:02,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:24:02,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:24:02,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:24:02,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:24:02,958 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:24:02,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:24:02,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:24:02,959 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:24:02,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:24:02,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:24:02,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:24:02,960 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:24:02,960 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:24:02,960 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:24:02,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:24:02,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:24:02,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:24:02,961 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:24:02,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:24:02,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:24:02,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:24:02,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:24:02,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:24:02,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:24:02,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:24:02,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:24:02,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:24:02,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:24:02,967 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 [2020-10-19 18:24:03,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:24:03,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:24:03,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:24:03,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:24:03,343 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:24:03,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2020-10-19 18:24:03,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d716bb6/3f14cc6bf878486dbb8ca9694e4b460c/FLAG9227f15ed [2020-10-19 18:24:03,768 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:24:03,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2020-10-19 18:24:03,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d716bb6/3f14cc6bf878486dbb8ca9694e4b460c/FLAG9227f15ed [2020-10-19 18:24:04,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d716bb6/3f14cc6bf878486dbb8ca9694e4b460c [2020-10-19 18:24:04,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:24:04,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:24:04,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:24:04,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:24:04,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:24:04,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4bfa31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04, skipping insertion in model container [2020-10-19 18:24:04,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:24:04,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:24:04,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:24:04,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:24:04,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:24:04,425 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:24:04,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04 WrapperNode [2020-10-19 18:24:04,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:24:04,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:24:04,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:24:04,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:24:04,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (1/1) ... [2020-10-19 18:24:04,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:24:04,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:24:04,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:24:04,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:24:04,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (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 [2020-10-19 18:24:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:24:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:24:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2020-10-19 18:24:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:24:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-19 18:24:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2020-10-19 18:24:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:24:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:24:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:24:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:24:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:24:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:24:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:24:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:24:04,959 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:24:04,959 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:24:04,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:04 BoogieIcfgContainer [2020-10-19 18:24:04,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:24:04,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:24:04,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:24:04,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:24:04,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:24:04" (1/3) ... [2020-10-19 18:24:04,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bbd663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:24:04, skipping insertion in model container [2020-10-19 18:24:04,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:04" (2/3) ... [2020-10-19 18:24:04,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bbd663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:24:04, skipping insertion in model container [2020-10-19 18:24:04,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:04" (3/3) ... [2020-10-19 18:24:04,971 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-2.c [2020-10-19 18:24:04,983 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:24:04,991 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-19 18:24:05,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-19 18:24:05,027 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:24:05,028 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:24:05,028 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:24:05,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:24:05,028 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:24:05,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:24:05,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:24:05,029 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:24:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-19 18:24:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:24:05,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:05,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:05,057 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:05,064 INFO L82 PathProgramCache]: Analyzing trace with hash 543879226, now seen corresponding path program 1 times [2020-10-19 18:24:05,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:05,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375964707] [2020-10-19 18:24:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:05,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:05,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375964707] [2020-10-19 18:24:05,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:05,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:24:05,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876365092] [2020-10-19 18:24:05,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:05,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:05,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:05,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:05,357 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-10-19 18:24:05,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:05,495 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-10-19 18:24:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:24:05,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-19 18:24:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:05,506 INFO L225 Difference]: With dead ends: 42 [2020-10-19 18:24:05,507 INFO L226 Difference]: Without dead ends: 34 [2020-10-19 18:24:05,508 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 [2020-10-19 18:24:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-19 18:24:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2020-10-19 18:24:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-19 18:24:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-19 18:24:05,545 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2020-10-19 18:24:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:05,545 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-19 18:24:05,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-19 18:24:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:24:05,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:05,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:05,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:24:05,547 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:05,548 INFO L82 PathProgramCache]: Analyzing trace with hash 543879227, now seen corresponding path program 1 times [2020-10-19 18:24:05,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:05,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061592916] [2020-10-19 18:24:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:05,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061592916] [2020-10-19 18:24:05,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:05,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:24:05,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28916195] [2020-10-19 18:24:05,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:24:05,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:05,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:24:05,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:24:05,707 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-10-19 18:24:05,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:05,853 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-10-19 18:24:05,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:24:05,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-19 18:24:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:05,855 INFO L225 Difference]: With dead ends: 24 [2020-10-19 18:24:05,855 INFO L226 Difference]: Without dead ends: 24 [2020-10-19 18:24:05,856 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 [2020-10-19 18:24:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-19 18:24:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-19 18:24:05,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 18:24:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-19 18:24:05,862 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2020-10-19 18:24:05,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:05,862 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-19 18:24:05,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:24:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-19 18:24:05,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:24:05,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:05,864 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:05,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:24:05,864 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:05,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:05,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2089391026, now seen corresponding path program 1 times [2020-10-19 18:24:05,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:05,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871979468] [2020-10-19 18:24:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:06,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871979468] [2020-10-19 18:24:06,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528599525] [2020-10-19 18:24:06,008 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 [2020-10-19 18:24:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:06,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:24:06,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:06,188 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:24:06,190 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 [2020-10-19 18:24:06,193 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:24:06,215 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-19 18:24:06,223 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:24:06,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-19 18:24:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:06,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:24:06,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-19 18:24:06,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100369487] [2020-10-19 18:24:06,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:24:06,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:06,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:24:06,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:24:06,255 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-10-19 18:24:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:06,412 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-19 18:24:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:24:06,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-19 18:24:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:06,414 INFO L225 Difference]: With dead ends: 27 [2020-10-19 18:24:06,414 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 18:24:06,415 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 [2020-10-19 18:24:06,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 18:24:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-19 18:24:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 18:24:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-19 18:24:06,420 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2020-10-19 18:24:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:06,421 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-19 18:24:06,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:24:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-19 18:24:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:24:06,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:06,423 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:06,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-19 18:24:06,625 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:06,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1912985381, now seen corresponding path program 2 times [2020-10-19 18:24:06,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:06,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200120448] [2020-10-19 18:24:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:06,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200120448] [2020-10-19 18:24:06,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428609767] [2020-10-19 18:24:06,772 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 [2020-10-19 18:24:06,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:24:06,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:24:06,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:24:06,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:06,856 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:24:06,856 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 [2020-10-19 18:24:06,858 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:24:06,878 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-19 18:24:06,881 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:24:06,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-19 18:24:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:07,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:24:07,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2020-10-19 18:24:07,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235772887] [2020-10-19 18:24:07,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:24:07,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:07,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:24:07,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:24:07,018 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-10-19 18:24:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:07,071 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-19 18:24:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:24:07,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 18:24:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:07,074 INFO L225 Difference]: With dead ends: 26 [2020-10-19 18:24:07,075 INFO L226 Difference]: Without dead ends: 26 [2020-10-19 18:24:07,076 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 [2020-10-19 18:24:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-19 18:24:07,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-19 18:24:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 18:24:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-19 18:24:07,081 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2020-10-19 18:24:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:07,081 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-19 18:24:07,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:24:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-19 18:24:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:24:07,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:07,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:07,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:24:07,294 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2027302431, now seen corresponding path program 1 times [2020-10-19 18:24:07,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:07,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777128087] [2020-10-19 18:24:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 18:24:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:24:07,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777128087] [2020-10-19 18:24:07,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:07,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:24:07,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657774545] [2020-10-19 18:24:07,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:24:07,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:07,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:24:07,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:24:07,397 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-19 18:24:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:07,514 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-10-19 18:24:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:24:07,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-19 18:24:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:07,516 INFO L225 Difference]: With dead ends: 23 [2020-10-19 18:24:07,516 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 18:24:07,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:24:07,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 18:24:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-19 18:24:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 18:24:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-19 18:24:07,521 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2020-10-19 18:24:07,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:07,521 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-19 18:24:07,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:24:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-19 18:24:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:24:07,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:07,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:07,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:24:07,523 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2027302432, now seen corresponding path program 1 times [2020-10-19 18:24:07,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:07,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595704732] [2020-10-19 18:24:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 18:24:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:07,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595704732] [2020-10-19 18:24:07,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38581647] [2020-10-19 18:24:07,644 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 [2020-10-19 18:24:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:24:07,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:07,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:24:07,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-10-19 18:24:07,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365870567] [2020-10-19 18:24:07,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:24:07,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:07,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:24:07,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:24:07,709 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-10-19 18:24:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:07,790 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-19 18:24:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:24:07,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-19 18:24:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:07,792 INFO L225 Difference]: With dead ends: 28 [2020-10-19 18:24:07,792 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 18:24:07,792 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 [2020-10-19 18:24:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 18:24:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-19 18:24:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 18:24:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-19 18:24:07,797 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2020-10-19 18:24:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:07,797 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-19 18:24:07,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:24:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-19 18:24:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:24:07,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:07,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:08,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:24:08,001 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:08,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:08,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1378383287, now seen corresponding path program 2 times [2020-10-19 18:24:08,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:08,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065534417] [2020-10-19 18:24:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:08,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 18:24:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:08,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065534417] [2020-10-19 18:24:08,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886653925] [2020-10-19 18:24:08,095 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 [2020-10-19 18:24:08,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 18:24:08,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:24:08,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:24:08,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:08,162 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:24:08,163 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 [2020-10-19 18:24:08,164 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:24:08,194 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-19 18:24:08,198 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:24:08,199 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-19 18:24:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-19 18:24:08,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:24:08,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-10-19 18:24:08,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501457646] [2020-10-19 18:24:08,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:24:08,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:24:08,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:24:08,284 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2020-10-19 18:24:08,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:08,389 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-10-19 18:24:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:24:08,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-19 18:24:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:08,391 INFO L225 Difference]: With dead ends: 30 [2020-10-19 18:24:08,391 INFO L226 Difference]: Without dead ends: 30 [2020-10-19 18:24:08,392 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 [2020-10-19 18:24:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-19 18:24:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-19 18:24:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 18:24:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-19 18:24:08,399 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2020-10-19 18:24:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:08,399 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-19 18:24:08,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:24:08,400 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-19 18:24:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:24:08,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:08,402 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] [2020-10-19 18:24:08,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:24:08,604 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:08,604 INFO L82 PathProgramCache]: Analyzing trace with hash -2030859700, now seen corresponding path program 1 times [2020-10-19 18:24:08,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:08,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720970524] [2020-10-19 18:24:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:08,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 18:24:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:24:08,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720970524] [2020-10-19 18:24:08,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210236113] [2020-10-19 18:24:08,684 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 [2020-10-19 18:24:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:08,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:24:08,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:24:08,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:24:08,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2020-10-19 18:24:08,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900044734] [2020-10-19 18:24:08,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:24:08,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:08,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:24:08,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:24:08,798 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-10-19 18:24:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:08,885 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-10-19 18:24:08,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:24:08,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-19 18:24:08,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:08,888 INFO L225 Difference]: With dead ends: 33 [2020-10-19 18:24:08,888 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 18:24:08,889 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 [2020-10-19 18:24:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 18:24:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-19 18:24:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 18:24:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-19 18:24:08,895 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-10-19 18:24:08,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:08,896 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-19 18:24:08,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:24:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-19 18:24:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:24:08,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:08,902 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] [2020-10-19 18:24:09,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:24:09,115 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1845681667, now seen corresponding path program 2 times [2020-10-19 18:24:09,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:09,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648434511] [2020-10-19 18:24:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:09,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 18:24:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:24:09,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648434511] [2020-10-19 18:24:09,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491418627] [2020-10-19 18:24:09,207 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 [2020-10-19 18:24:09,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:24:09,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:24:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:24:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:24:09,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:24:09,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-10-19 18:24:09,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019226660] [2020-10-19 18:24:09,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:24:09,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:09,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:24:09,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:24:09,281 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-10-19 18:24:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:09,352 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-10-19 18:24:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:24:09,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-19 18:24:09,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:09,354 INFO L225 Difference]: With dead ends: 36 [2020-10-19 18:24:09,354 INFO L226 Difference]: Without dead ends: 36 [2020-10-19 18:24:09,354 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 [2020-10-19 18:24:09,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-19 18:24:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-19 18:24:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-19 18:24:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-19 18:24:09,358 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 30 [2020-10-19 18:24:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:09,358 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-19 18:24:09,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:24:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-19 18:24:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:24:09,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:09,360 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] [2020-10-19 18:24:09,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:24:09,570 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:09,571 INFO L82 PathProgramCache]: Analyzing trace with hash 513923820, now seen corresponding path program 3 times [2020-10-19 18:24:09,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:09,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034745810] [2020-10-19 18:24:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:09,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:09,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 18:24:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:24:09,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034745810] [2020-10-19 18:24:09,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620579375] [2020-10-19 18:24:09,697 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 [2020-10-19 18:24:09,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-19 18:24:09,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:24:09,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 18:24:09,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:09,776 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:24:09,777 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 [2020-10-19 18:24:09,777 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:24:09,798 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-19 18:24:09,800 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:24:09,800 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-19 18:24:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-19 18:24:09,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:24:09,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2020-10-19 18:24:09,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12274651] [2020-10-19 18:24:09,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:24:09,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:09,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:24:09,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:24:09,921 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 8 states. [2020-10-19 18:24:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:10,046 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-10-19 18:24:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:24:10,048 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-19 18:24:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:10,049 INFO L225 Difference]: With dead ends: 35 [2020-10-19 18:24:10,049 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:24:10,049 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 [2020-10-19 18:24:10,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:24:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:24:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:24:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:24:10,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-19 18:24:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:10,054 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:24:10,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:24:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:24:10,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:24:10,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-19 18:24:10,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:24:10 BoogieIcfgContainer [2020-10-19 18:24:10,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:24:10,263 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:24:10,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:24:10,263 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:24:10,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:04" (3/4) ... [2020-10-19 18:24:10,268 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:24:10,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:24:10,277 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:24:10,277 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers [2020-10-19 18:24:10,282 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-10-19 18:24:10,282 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-19 18:24:10,283 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:24:10,283 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:24:10,327 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:24:10,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:24:10,329 INFO L168 Benchmark]: Toolchain (without parser) took 6177.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 958.6 MB in the beginning and 1.0 GB in the end (delta: -41.9 MB). Peak memory consumption was 148.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:10,330 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:10,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.63 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:10,331 INFO L168 Benchmark]: Boogie Preprocessor took 114.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -147.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:10,332 INFO L168 Benchmark]: RCFGBuilder took 420.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:10,332 INFO L168 Benchmark]: TraceAbstraction took 5298.70 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 84.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.2 MB). Peak memory consumption was 157.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:10,333 INFO L168 Benchmark]: Witness Printer took 65.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:10,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.63 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 114.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -147.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 420.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5298.70 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 84.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.2 MB). Peak memory consumption was 157.6 MB. Max. memory is 11.5 GB. * Witness Printer took 65.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 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: 5.2s, 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...