./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer --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 e872a0dffbf376eb2d8b1e3516401a8dafe115a6 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:45:18,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:45:18,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:45:18,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:45:18,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:45:18,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:45:18,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:45:18,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:45:18,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:45:18,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:45:18,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:45:18,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:45:18,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:45:18,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:45:18,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:45:18,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:45:18,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:45:18,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:45:18,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:45:18,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:45:18,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:45:18,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:45:18,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:45:18,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:45:18,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:45:18,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:45:18,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:45:18,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:45:18,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:45:18,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:45:18,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:45:18,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:45:18,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:45:18,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:45:18,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:45:18,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:45:18,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:45:18,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:45:18,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:45:18,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:45:18,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:45:18,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 20:45:18,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:45:18,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:45:18,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:45:18,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:45:18,401 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:45:18,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:45:18,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:45:18,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:45:18,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:45:18,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:45:18,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:45:18,403 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 20:45:18,404 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 20:45:18,404 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 20:45:18,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:45:18,404 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 20:45:18,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:45:18,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:45:18,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:45:18,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:45:18,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:45:18,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:45:18,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:45:18,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:45:18,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:45:18,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:45:18,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:45:18,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:45:18,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e872a0dffbf376eb2d8b1e3516401a8dafe115a6 [2020-11-29 20:45:18,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:45:18,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:45:18,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:45:18,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:45:18,741 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:45:18,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2020-11-29 20:45:18,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/data/7fbc15f65/ec7e471930614523a6eff9d6283e4b1b/FLAG42416112d [2020-11-29 20:45:19,452 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:45:19,452 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2020-11-29 20:45:19,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/data/7fbc15f65/ec7e471930614523a6eff9d6283e4b1b/FLAG42416112d [2020-11-29 20:45:19,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/data/7fbc15f65/ec7e471930614523a6eff9d6283e4b1b [2020-11-29 20:45:19,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:45:19,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 20:45:19,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:45:19,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:45:19,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:45:19,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:45:19" (1/1) ... [2020-11-29 20:45:19,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5d7264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:19, skipping insertion in model container [2020-11-29 20:45:19,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:45:19" (1/1) ... [2020-11-29 20:45:19,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:45:19,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:45:20,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:45:20,061 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:45:20,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:45:20,100 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:45:20,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20 WrapperNode [2020-11-29 20:45:20,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:45:20,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:45:20,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:45:20,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:45:20,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (1/1) ... [2020-11-29 20:45:20,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (1/1) ... [2020-11-29 20:45:20,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (1/1) ... [2020-11-29 20:45:20,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (1/1) ... [2020-11-29 20:45:20,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (1/1) ... [2020-11-29 20:45:20,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (1/1) ... [2020-11-29 20:45:20,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (1/1) ... [2020-11-29 20:45:20,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:45:20,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:45:20,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:45:20,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:45:20,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/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 [2020-11-29 20:45:20,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 20:45:20,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:45:20,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2020-11-29 20:45:20,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2020-11-29 20:45:20,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 20:45:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2020-11-29 20:45:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:45:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2020-11-29 20:45:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:45:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:45:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:45:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 20:45:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 20:45:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:45:20,699 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:45:20,700 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-29 20:45:20,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:45:20 BoogieIcfgContainer [2020-11-29 20:45:20,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:45:20,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:45:20,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:45:20,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:45:20,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:45:19" (1/3) ... [2020-11-29 20:45:20,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302c2779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:45:20, skipping insertion in model container [2020-11-29 20:45:20,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:20" (2/3) ... [2020-11-29 20:45:20,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302c2779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:45:20, skipping insertion in model container [2020-11-29 20:45:20,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:45:20" (3/3) ... [2020-11-29 20:45:20,713 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers2.c [2020-11-29 20:45:20,727 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:45:20,732 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-11-29 20:45:20,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-11-29 20:45:20,772 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:45:20,772 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 20:45:20,772 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:45:20,772 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:45:20,773 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:45:20,773 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:45:20,773 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:45:20,773 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:45:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-29 20:45:20,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:45:20,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:20,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:20,803 INFO L429 AbstractCegarLoop]: === Iteration 1 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:20,811 INFO L82 PathProgramCache]: Analyzing trace with hash -262167437, now seen corresponding path program 1 times [2020-11-29 20:45:20,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:20,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251361654] [2020-11-29 20:45:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:21,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:21,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:21,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251361654] [2020-11-29 20:45:21,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:45:21,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:45:21,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537679768] [2020-11-29 20:45:21,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:45:21,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:21,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:45:21,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:45:21,316 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-11-29 20:45:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:21,686 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-11-29 20:45:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:45:21,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 20:45:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:21,700 INFO L225 Difference]: With dead ends: 43 [2020-11-29 20:45:21,701 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 20:45:21,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:45:21,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 20:45:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-11-29 20:45:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 20:45:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-11-29 20:45:21,742 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 10 [2020-11-29 20:45:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:21,743 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-11-29 20:45:21,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:45:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-11-29 20:45:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:45:21,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:21,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:21,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:45:21,745 INFO L429 AbstractCegarLoop]: === Iteration 2 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:21,746 INFO L82 PathProgramCache]: Analyzing trace with hash -262167438, now seen corresponding path program 1 times [2020-11-29 20:45:21,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:21,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495799726] [2020-11-29 20:45:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:21,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:21,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495799726] [2020-11-29 20:45:21,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:45:21,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:45:21,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902291547] [2020-11-29 20:45:21,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:45:21,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:45:21,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:45:21,871 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 4 states. [2020-11-29 20:45:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:22,018 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-29 20:45:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:45:22,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:45:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:22,021 INFO L225 Difference]: With dead ends: 37 [2020-11-29 20:45:22,021 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 20:45:22,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:45:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 20:45:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 20:45:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 20:45:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-11-29 20:45:22,033 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 10 [2020-11-29 20:45:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:22,036 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-11-29 20:45:22,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:45:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-11-29 20:45:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:45:22,037 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:22,038 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:22,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:45:22,039 INFO L429 AbstractCegarLoop]: === Iteration 3 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:22,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:22,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1979581628, now seen corresponding path program 1 times [2020-11-29 20:45:22,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:22,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736170869] [2020-11-29 20:45:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:22,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:22,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736170869] [2020-11-29 20:45:22,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204740836] [2020-11-29 20:45:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/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 [2020-11-29 20:45:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:22,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:45:22,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:22,483 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:22,484 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:22,496 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:22,496 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:22,497 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 20:45:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:22,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:22,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-29 20:45:22,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864819302] [2020-11-29 20:45:22,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:45:22,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:22,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:45:22,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:45:22,563 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 7 states. [2020-11-29 20:45:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:22,869 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-29 20:45:22,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:45:22,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-29 20:45:22,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:22,873 INFO L225 Difference]: With dead ends: 41 [2020-11-29 20:45:22,873 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 20:45:22,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:45:22,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 20:45:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-11-29 20:45:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:45:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-29 20:45:22,880 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-11-29 20:45:22,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:22,881 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-29 20:45:22,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:45:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-29 20:45:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:45:22,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:22,882 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:23,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 20:45:23,102 INFO L429 AbstractCegarLoop]: === Iteration 4 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:23,103 INFO L82 PathProgramCache]: Analyzing trace with hash 479651539, now seen corresponding path program 2 times [2020-11-29 20:45:23,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:23,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224408543] [2020-11-29 20:45:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:23,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224408543] [2020-11-29 20:45:23,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623131999] [2020-11-29 20:45:23,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/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 [2020-11-29 20:45:23,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:45:23,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:23,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:45:23,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:23,487 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:23,488 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:23,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:23,501 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:23,501 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 20:45:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:23,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:45:23,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2020-11-29 20:45:23,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698583015] [2020-11-29 20:45:23,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:45:23,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:23,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:45:23,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:45:23,678 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 7 states. [2020-11-29 20:45:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:23,817 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-29 20:45:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:45:23,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-29 20:45:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:23,822 INFO L225 Difference]: With dead ends: 40 [2020-11-29 20:45:23,822 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 20:45:23,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:45:23,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 20:45:23,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-11-29 20:45:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 20:45:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-11-29 20:45:23,834 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 16 [2020-11-29 20:45:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:23,835 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-11-29 20:45:23,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:45:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-11-29 20:45:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 20:45:23,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:23,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:24,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:24,037 INFO L429 AbstractCegarLoop]: === Iteration 5 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash -680983352, now seen corresponding path program 1 times [2020-11-29 20:45:24,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:24,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073130333] [2020-11-29 20:45:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:24,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:24,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:24,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073130333] [2020-11-29 20:45:24,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972776892] [2020-11-29 20:45:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/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 [2020-11-29 20:45:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:24,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:45:24,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:24,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:24,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-11-29 20:45:24,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003617705] [2020-11-29 20:45:24,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:45:24,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:24,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:45:24,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:45:24,288 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 7 states. [2020-11-29 20:45:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:24,459 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-11-29 20:45:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:45:24,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-29 20:45:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:24,461 INFO L225 Difference]: With dead ends: 43 [2020-11-29 20:45:24,461 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 20:45:24,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:45:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 20:45:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-11-29 20:45:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 20:45:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-11-29 20:45:24,473 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 21 [2020-11-29 20:45:24,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:24,473 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-11-29 20:45:24,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:45:24,474 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-11-29 20:45:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:45:24,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:24,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:24,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:24,684 INFO L429 AbstractCegarLoop]: === Iteration 6 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:24,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:24,684 INFO L82 PathProgramCache]: Analyzing trace with hash 974975319, now seen corresponding path program 2 times [2020-11-29 20:45:24,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:24,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265879465] [2020-11-29 20:45:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:24,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265879465] [2020-11-29 20:45:24,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701793429] [2020-11-29 20:45:24,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/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 [2020-11-29 20:45:24,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 20:45:24,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:24,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 20:45:24,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:24,965 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:24,966 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 [2020-11-29 20:45:24,966 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:24,990 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-11-29 20:45:24,991 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:24,991 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:15 [2020-11-29 20:45:25,076 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:45:25,126 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:25,127 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 20:45:25,128 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:25,189 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:25,190 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 58 [2020-11-29 20:45:25,191 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:25,280 INFO L625 ElimStorePlain]: treesize reduction 42, result has 45.5 percent of original size [2020-11-29 20:45:25,282 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:45:25,283 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-11-29 20:45:25,284 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:35 [2020-11-29 20:45:25,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:45:25,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:45:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:45:25,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:45:25,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-11-29 20:45:25,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567951533] [2020-11-29 20:45:25,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:45:25,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:25,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:45:25,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:45:25,372 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2020-11-29 20:45:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:25,540 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-29 20:45:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:45:25,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 20:45:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:25,542 INFO L225 Difference]: With dead ends: 40 [2020-11-29 20:45:25,542 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 20:45:25,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:45:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 20:45:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-29 20:45:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:45:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-29 20:45:25,549 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 24 [2020-11-29 20:45:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:25,549 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-29 20:45:25,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:45:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-29 20:45:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:45:25,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:25,550 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:25,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:25,762 INFO L429 AbstractCegarLoop]: === Iteration 7 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:25,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:25,763 INFO L82 PathProgramCache]: Analyzing trace with hash 974975320, now seen corresponding path program 1 times [2020-11-29 20:45:25,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:25,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199219521] [2020-11-29 20:45:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:25,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199219521] [2020-11-29 20:45:25,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201019835] [2020-11-29 20:45:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/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 [2020-11-29 20:45:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:25,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:45:25,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:26,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:26,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2020-11-29 20:45:26,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357668237] [2020-11-29 20:45:26,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:45:26,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:26,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:45:26,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:45:26,026 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 8 states. [2020-11-29 20:45:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:26,181 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-11-29 20:45:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:45:26,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-11-29 20:45:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:26,184 INFO L225 Difference]: With dead ends: 45 [2020-11-29 20:45:26,184 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 20:45:26,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:45:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 20:45:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-11-29 20:45:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 20:45:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-11-29 20:45:26,190 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 24 [2020-11-29 20:45:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:26,190 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-11-29 20:45:26,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:45:26,190 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-11-29 20:45:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 20:45:26,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:26,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:26,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 20:45:26,411 INFO L429 AbstractCegarLoop]: === Iteration 8 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:26,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:26,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1645381225, now seen corresponding path program 2 times [2020-11-29 20:45:26,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:26,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851176471] [2020-11-29 20:45:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:26,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851176471] [2020-11-29 20:45:26,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384118278] [2020-11-29 20:45:26,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/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 [2020-11-29 20:45:26,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 20:45:26,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:26,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 20:45:26,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:26,647 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:26,648 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:26,656 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:26,656 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:26,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 20:45:26,748 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:26,749 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 20:45:26,749 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:26,780 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-11-29 20:45:26,781 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 20:45:26,781 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:17 [2020-11-29 20:45:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 20:45:26,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:45:26,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2020-11-29 20:45:26,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672793610] [2020-11-29 20:45:26,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:45:26,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:26,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:45:26,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:45:26,821 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 6 states. [2020-11-29 20:45:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:26,998 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-11-29 20:45:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:45:26,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 20:45:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:27,000 INFO L225 Difference]: With dead ends: 50 [2020-11-29 20:45:27,000 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 20:45:27,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-11-29 20:45:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 20:45:27,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-29 20:45:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 20:45:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-11-29 20:45:27,006 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 27 [2020-11-29 20:45:27,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:27,007 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-11-29 20:45:27,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:45:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-11-29 20:45:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 20:45:27,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:27,008 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:27,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:27,222 INFO L429 AbstractCegarLoop]: === Iteration 9 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:27,222 INFO L82 PathProgramCache]: Analyzing trace with hash -532789623, now seen corresponding path program 1 times [2020-11-29 20:45:27,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:27,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995084831] [2020-11-29 20:45:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:27,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 20:45:27,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995084831] [2020-11-29 20:45:27,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:45:27,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:45:27,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772929673] [2020-11-29 20:45:27,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:45:27,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:27,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:45:27,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:45:27,328 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-11-29 20:45:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:27,422 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-11-29 20:45:27,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:45:27,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-11-29 20:45:27,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:27,424 INFO L225 Difference]: With dead ends: 44 [2020-11-29 20:45:27,424 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 20:45:27,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:45:27,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 20:45:27,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-29 20:45:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 20:45:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-29 20:45:27,439 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 28 [2020-11-29 20:45:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:27,439 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-29 20:45:27,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:45:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-29 20:45:27,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 20:45:27,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:27,441 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:27,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:45:27,441 INFO L429 AbstractCegarLoop]: === Iteration 10 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash -532789622, now seen corresponding path program 1 times [2020-11-29 20:45:27,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:27,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636731575] [2020-11-29 20:45:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:27,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636731575] [2020-11-29 20:45:27,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26323913] [2020-11-29 20:45:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/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 [2020-11-29 20:45:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:27,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:45:27,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:27,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:27,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-11-29 20:45:27,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386474047] [2020-11-29 20:45:27,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:45:27,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:27,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:45:27,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:45:27,712 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 9 states. [2020-11-29 20:45:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:27,861 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-11-29 20:45:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:45:27,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-11-29 20:45:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:27,863 INFO L225 Difference]: With dead ends: 49 [2020-11-29 20:45:27,863 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 20:45:27,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:45:27,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 20:45:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-11-29 20:45:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 20:45:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-11-29 20:45:27,868 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 28 [2020-11-29 20:45:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:27,869 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-11-29 20:45:27,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:45:27,869 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-11-29 20:45:27,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:45:27,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:27,870 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:28,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 20:45:28,099 INFO L429 AbstractCegarLoop]: === Iteration 11 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:28,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:28,100 INFO L82 PathProgramCache]: Analyzing trace with hash 978381595, now seen corresponding path program 2 times [2020-11-29 20:45:28,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:28,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859982220] [2020-11-29 20:45:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:28,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:28,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859982220] [2020-11-29 20:45:28,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014794740] [2020-11-29 20:45:28,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:28,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 20:45:28,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:28,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:45:28,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:28,350 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:28,351 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:28,360 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:28,360 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:28,361 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-29 20:45:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-29 20:45:28,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:45:28,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2020-11-29 20:45:28,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159215725] [2020-11-29 20:45:28,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:45:28,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:45:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:45:28,385 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 3 states. [2020-11-29 20:45:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:28,426 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-11-29 20:45:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:45:28,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-29 20:45:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:28,427 INFO L225 Difference]: With dead ends: 50 [2020-11-29 20:45:28,428 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 20:45:28,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:45:28,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 20:45:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-11-29 20:45:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 20:45:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-11-29 20:45:28,441 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 31 [2020-11-29 20:45:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:28,441 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-11-29 20:45:28,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:45:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-11-29 20:45:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 20:45:28,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:28,446 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, 1, 1] [2020-11-29 20:45:28,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-29 20:45:28,663 INFO L429 AbstractCegarLoop]: === Iteration 12 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:28,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2092158530, now seen corresponding path program 1 times [2020-11-29 20:45:28,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:28,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362681396] [2020-11-29 20:45:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:28,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:45:28,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362681396] [2020-11-29 20:45:28,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555048737] [2020-11-29 20:45:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:28,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:45:28,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:45:28,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:28,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2020-11-29 20:45:28,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397397551] [2020-11-29 20:45:28,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:45:28,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:28,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:45:28,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:45:28,956 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 10 states. [2020-11-29 20:45:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:29,120 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-11-29 20:45:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:45:29,121 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-11-29 20:45:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:29,122 INFO L225 Difference]: With dead ends: 53 [2020-11-29 20:45:29,122 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 20:45:29,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:45:29,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 20:45:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-11-29 20:45:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 20:45:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-11-29 20:45:29,128 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 35 [2020-11-29 20:45:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:29,128 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-11-29 20:45:29,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:45:29,128 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-11-29 20:45:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 20:45:29,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:29,130 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:29,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:29,347 INFO L429 AbstractCegarLoop]: === Iteration 13 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:29,348 INFO L82 PathProgramCache]: Analyzing trace with hash 675510285, now seen corresponding path program 2 times [2020-11-29 20:45:29,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:29,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163869762] [2020-11-29 20:45:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:45:29,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163869762] [2020-11-29 20:45:29,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872032738] [2020-11-29 20:45:29,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:29,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:45:29,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:29,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:45:29,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:45:29,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:29,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2020-11-29 20:45:29,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361700970] [2020-11-29 20:45:29,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:45:29,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:29,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:45:29,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:45:29,653 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2020-11-29 20:45:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:29,850 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-11-29 20:45:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:45:29,850 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-11-29 20:45:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:29,851 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:45:29,852 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 20:45:29,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:45:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 20:45:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-11-29 20:45:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 20:45:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-11-29 20:45:29,857 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 38 [2020-11-29 20:45:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:29,858 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-11-29 20:45:29,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:45:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-11-29 20:45:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 20:45:29,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:29,859 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:30,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:30,076 INFO L429 AbstractCegarLoop]: === Iteration 14 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1809996638, now seen corresponding path program 3 times [2020-11-29 20:45:30,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:30,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019718934] [2020-11-29 20:45:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:30,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:45:30,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019718934] [2020-11-29 20:45:30,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321600023] [2020-11-29 20:45:30,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:30,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:45:30,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:30,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 20:45:30,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:30,373 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:30,373 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:30,400 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:30,400 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:30,401 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 20:45:30,550 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:30,551 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 20:45:30,552 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:30,592 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-11-29 20:45:30,593 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 20:45:30,594 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:17 [2020-11-29 20:45:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-29 20:45:30,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:30,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 17 [2020-11-29 20:45:30,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856396427] [2020-11-29 20:45:30,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 20:45:30,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:30,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 20:45:30,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-11-29 20:45:30,691 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 17 states. [2020-11-29 20:45:31,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:31,455 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-11-29 20:45:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 20:45:31,455 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-11-29 20:45:31,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:31,457 INFO L225 Difference]: With dead ends: 67 [2020-11-29 20:45:31,457 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 20:45:31,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2020-11-29 20:45:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 20:45:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-11-29 20:45:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 20:45:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-11-29 20:45:31,463 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 41 [2020-11-29 20:45:31,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:31,464 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-11-29 20:45:31,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 20:45:31,464 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-11-29 20:45:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 20:45:31,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:31,465 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:31,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 20:45:31,690 INFO L429 AbstractCegarLoop]: === Iteration 15 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:31,691 INFO L82 PathProgramCache]: Analyzing trace with hash -665591034, now seen corresponding path program 1 times [2020-11-29 20:45:31,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:31,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197410879] [2020-11-29 20:45:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:45:31,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197410879] [2020-11-29 20:45:31,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614487320] [2020-11-29 20:45:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:32,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:45:32,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:45:32,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:32,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2020-11-29 20:45:32,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43897467] [2020-11-29 20:45:32,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 20:45:32,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 20:45:32,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:45:32,078 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2020-11-29 20:45:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:32,225 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-11-29 20:45:32,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 20:45:32,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-11-29 20:45:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:32,226 INFO L225 Difference]: With dead ends: 66 [2020-11-29 20:45:32,226 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 20:45:32,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:45:32,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 20:45:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-11-29 20:45:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-29 20:45:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-11-29 20:45:32,232 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 45 [2020-11-29 20:45:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:32,232 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-11-29 20:45:32,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 20:45:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-11-29 20:45:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 20:45:32,234 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:32,234 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:32,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 20:45:32,459 INFO L429 AbstractCegarLoop]: === Iteration 16 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:32,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:32,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1878971029, now seen corresponding path program 2 times [2020-11-29 20:45:32,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:32,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904651147] [2020-11-29 20:45:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:32,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:45:32,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904651147] [2020-11-29 20:45:32,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161019074] [2020-11-29 20:45:32,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:32,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 20:45:32,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:32,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:45:32,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:32,883 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:32,883 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:32,899 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:32,899 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:32,899 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-29 20:45:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-29 20:45:33,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:33,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 20 [2020-11-29 20:45:33,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726858748] [2020-11-29 20:45:33,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 20:45:33,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:33,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 20:45:33,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-11-29 20:45:33,030 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 20 states. [2020-11-29 20:45:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:33,558 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-11-29 20:45:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 20:45:33,559 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-11-29 20:45:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:33,560 INFO L225 Difference]: With dead ends: 66 [2020-11-29 20:45:33,560 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 20:45:33,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 20:45:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 20:45:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-29 20:45:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 20:45:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-11-29 20:45:33,570 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 48 [2020-11-29 20:45:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:33,571 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-11-29 20:45:33,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 20:45:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-11-29 20:45:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-29 20:45:33,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:33,573 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:33,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 20:45:33,774 INFO L429 AbstractCegarLoop]: === Iteration 17 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:33,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:33,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1831341513, now seen corresponding path program 4 times [2020-11-29 20:45:33,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:33,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817609541] [2020-11-29 20:45:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-29 20:45:34,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817609541] [2020-11-29 20:45:34,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807648688] [2020-11-29 20:45:34,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:34,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 20:45:34,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:34,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-29 20:45:34,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:34,151 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:34,151 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:34,160 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:34,160 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:34,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 20:45:34,660 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:34,660 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 36 [2020-11-29 20:45:34,661 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:34,685 INFO L625 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2020-11-29 20:45:34,687 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 20:45:34,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:23 [2020-11-29 20:45:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 126 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:34,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:34,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19] total 27 [2020-11-29 20:45:34,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898249239] [2020-11-29 20:45:34,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 20:45:34,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:34,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 20:45:34,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2020-11-29 20:45:34,908 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 28 states. [2020-11-29 20:45:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:36,293 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-11-29 20:45:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 20:45:36,294 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2020-11-29 20:45:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:36,295 INFO L225 Difference]: With dead ends: 74 [2020-11-29 20:45:36,295 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 20:45:36,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 20:45:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 20:45:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-11-29 20:45:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 20:45:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-11-29 20:45:36,300 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 55 [2020-11-29 20:45:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:36,300 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-11-29 20:45:36,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 20:45:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-11-29 20:45:36,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 20:45:36,302 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:36,302 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:36,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:36,503 INFO L429 AbstractCegarLoop]: === Iteration 18 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:36,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:36,503 INFO L82 PathProgramCache]: Analyzing trace with hash 256397901, now seen corresponding path program 5 times [2020-11-29 20:45:36,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:36,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773981076] [2020-11-29 20:45:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:36,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-29 20:45:36,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773981076] [2020-11-29 20:45:36,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125062742] [2020-11-29 20:45:36,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:37,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-29 20:45:37,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:37,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 20:45:37,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:37,169 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:37,169 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:37,178 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:37,202 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:37,202 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 [2020-11-29 20:45:37,203 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:37,227 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-11-29 20:45:37,228 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:37,228 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:23 [2020-11-29 20:45:37,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:45:37,369 INFO L441 ElimStorePlain]: Different costs {1=[|v_#length_30|], 3=[|v_#valid_27|]} [2020-11-29 20:45:37,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 20:45:37,392 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-11-29 20:45:37,393 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:37,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 20:45:37,401 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-11-29 20:45:37,401 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:37,465 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:37,500 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:37,500 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2020-11-29 20:45:37,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:45:37,504 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:45:37,507 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:37,520 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:37,520 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-11-29 20:45:37,521 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:45:37,522 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:37,552 INFO L625 ElimStorePlain]: treesize reduction 29, result has 42.0 percent of original size [2020-11-29 20:45:37,553 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 20:45:37,554 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:65, output treesize:21 [2020-11-29 20:45:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:37,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:37,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2020-11-29 20:45:37,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357738867] [2020-11-29 20:45:37,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 20:45:37,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:37,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 20:45:37,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-11-29 20:45:37,798 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 19 states. [2020-11-29 20:45:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:38,384 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-11-29 20:45:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:45:38,385 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-11-29 20:45:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:38,386 INFO L225 Difference]: With dead ends: 79 [2020-11-29 20:45:38,386 INFO L226 Difference]: Without dead ends: 79 [2020-11-29 20:45:38,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-11-29 20:45:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-29 20:45:38,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-11-29 20:45:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-29 20:45:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-11-29 20:45:38,390 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 60 [2020-11-29 20:45:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:38,390 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-11-29 20:45:38,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 20:45:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-11-29 20:45:38,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-29 20:45:38,392 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:38,392 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:38,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 20:45:38,592 INFO L429 AbstractCegarLoop]: === Iteration 19 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1410187191, now seen corresponding path program 6 times [2020-11-29 20:45:38,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:38,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115341666] [2020-11-29 20:45:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:38,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:45:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 19 proven. 38 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-29 20:45:38,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115341666] [2020-11-29 20:45:38,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590838269] [2020-11-29 20:45:38,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:38,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-29 20:45:38,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:38,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 20:45:38,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:39,011 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 20:45:39,011 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:39,018 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:39,018 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:45:39,018 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 20:45:39,147 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:45:39,147 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 20:45:39,148 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:45:39,165 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 20:45:39,166 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 20:45:39,166 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-11-29 20:45:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-11-29 20:45:39,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:45:39,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2020-11-29 20:45:39,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930279535] [2020-11-29 20:45:39,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:45:39,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:39,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:45:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-11-29 20:45:39,327 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 9 states. [2020-11-29 20:45:39,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:39,625 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-11-29 20:45:39,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:45:39,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-11-29 20:45:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:39,627 INFO L225 Difference]: With dead ends: 75 [2020-11-29 20:45:39,627 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 20:45:39,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2020-11-29 20:45:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 20:45:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-11-29 20:45:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 20:45:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-11-29 20:45:39,630 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 65 [2020-11-29 20:45:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:39,630 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-11-29 20:45:39,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:45:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-11-29 20:45:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-29 20:45:39,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:39,631 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:39,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:39,839 INFO L429 AbstractCegarLoop]: === Iteration 20 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash -368674019, now seen corresponding path program 1 times [2020-11-29 20:45:39,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:39,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194623121] [2020-11-29 20:45:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:39,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:45:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:40,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194623121] [2020-11-29 20:45:40,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108179169] [2020-11-29 20:45:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:40,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:45:40,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:40,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:40,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 10 [2020-11-29 20:45:40,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348804287] [2020-11-29 20:45:40,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:45:40,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:45:40,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:45:40,129 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 10 states. [2020-11-29 20:45:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:40,221 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-11-29 20:45:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:45:40,221 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-11-29 20:45:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:40,222 INFO L225 Difference]: With dead ends: 83 [2020-11-29 20:45:40,222 INFO L226 Difference]: Without dead ends: 83 [2020-11-29 20:45:40,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:45:40,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-29 20:45:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-11-29 20:45:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-29 20:45:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-11-29 20:45:40,226 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2020-11-29 20:45:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:40,226 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-11-29 20:45:40,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:45:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-11-29 20:45:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-29 20:45:40,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:40,228 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:40,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:40,438 INFO L429 AbstractCegarLoop]: === Iteration 21 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:40,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:40,438 INFO L82 PathProgramCache]: Analyzing trace with hash -243103583, now seen corresponding path program 2 times [2020-11-29 20:45:40,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:40,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431480604] [2020-11-29 20:45:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:40,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:40,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:45:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:40,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431480604] [2020-11-29 20:45:40,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005425786] [2020-11-29 20:45:40,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:40,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:45:40,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:40,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:45:40,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:40,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:40,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 11 [2020-11-29 20:45:40,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366638042] [2020-11-29 20:45:40,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:45:40,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:40,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:45:40,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:45:40,750 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 11 states. [2020-11-29 20:45:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:40,891 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2020-11-29 20:45:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:45:40,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-11-29 20:45:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:40,893 INFO L225 Difference]: With dead ends: 88 [2020-11-29 20:45:40,893 INFO L226 Difference]: Without dead ends: 88 [2020-11-29 20:45:40,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:45:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-29 20:45:40,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-11-29 20:45:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 20:45:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-11-29 20:45:40,898 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 74 [2020-11-29 20:45:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:40,898 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-11-29 20:45:40,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:45:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-11-29 20:45:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-29 20:45:40,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:40,900 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:41,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 20:45:41,119 INFO L429 AbstractCegarLoop]: === Iteration 22 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:41,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:41,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1204178333, now seen corresponding path program 3 times [2020-11-29 20:45:41,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:41,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147830772] [2020-11-29 20:45:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:41,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:41,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:45:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:41,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147830772] [2020-11-29 20:45:41,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518696361] [2020-11-29 20:45:41,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:41,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-29 20:45:41,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:41,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:45:41,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:41,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:41,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 12 [2020-11-29 20:45:41,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055007563] [2020-11-29 20:45:41,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:45:41,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:45:41,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:45:41,542 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 12 states. [2020-11-29 20:45:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:41,662 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-11-29 20:45:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:45:41,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-11-29 20:45:41,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:41,665 INFO L225 Difference]: With dead ends: 93 [2020-11-29 20:45:41,666 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 20:45:41,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:45:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 20:45:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-11-29 20:45:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-29 20:45:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2020-11-29 20:45:41,669 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 79 [2020-11-29 20:45:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:41,670 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2020-11-29 20:45:41,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:45:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2020-11-29 20:45:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-29 20:45:41,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:41,671 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:41,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:41,871 INFO L429 AbstractCegarLoop]: === Iteration 23 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:41,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:41,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2025699807, now seen corresponding path program 4 times [2020-11-29 20:45:41,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:41,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475390937] [2020-11-29 20:45:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:45:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:42,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:42,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475390937] [2020-11-29 20:45:42,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156906800] [2020-11-29 20:45:42,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:42,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 20:45:42,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:42,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:45:42,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:42,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:42,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 13 [2020-11-29 20:45:42,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834949575] [2020-11-29 20:45:42,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 20:45:42,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:42,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 20:45:42,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:45:42,540 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 13 states. [2020-11-29 20:45:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:42,651 INFO L93 Difference]: Finished difference Result 98 states and 99 transitions. [2020-11-29 20:45:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:45:42,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-11-29 20:45:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:42,652 INFO L225 Difference]: With dead ends: 98 [2020-11-29 20:45:42,653 INFO L226 Difference]: Without dead ends: 98 [2020-11-29 20:45:42,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:45:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-29 20:45:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-11-29 20:45:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-29 20:45:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-11-29 20:45:42,656 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 84 [2020-11-29 20:45:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:42,657 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-11-29 20:45:42,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 20:45:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-11-29 20:45:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 20:45:42,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:42,658 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:42,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 20:45:42,858 INFO L429 AbstractCegarLoop]: === Iteration 24 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:42,859 INFO L82 PathProgramCache]: Analyzing trace with hash -809435107, now seen corresponding path program 5 times [2020-11-29 20:45:42,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:42,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867353755] [2020-11-29 20:45:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:45:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:43,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867353755] [2020-11-29 20:45:43,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039153139] [2020-11-29 20:45:43,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:44,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-29 20:45:44,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:44,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:45:44,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:44,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:44,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 14 [2020-11-29 20:45:44,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943747215] [2020-11-29 20:45:44,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 20:45:44,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:44,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 20:45:44,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:45:44,053 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 14 states. [2020-11-29 20:45:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:44,208 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2020-11-29 20:45:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:45:44,208 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-11-29 20:45:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:44,210 INFO L225 Difference]: With dead ends: 103 [2020-11-29 20:45:44,210 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 20:45:44,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:45:44,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 20:45:44,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2020-11-29 20:45:44,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-29 20:45:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-11-29 20:45:44,214 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 89 [2020-11-29 20:45:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:44,214 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-11-29 20:45:44,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 20:45:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-11-29 20:45:44,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-29 20:45:44,215 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:44,216 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:44,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 20:45:44,427 INFO L429 AbstractCegarLoop]: === Iteration 25 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:44,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2070731871, now seen corresponding path program 6 times [2020-11-29 20:45:44,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:44,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426655389] [2020-11-29 20:45:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:44,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:44,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:45:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:45:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:44,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426655389] [2020-11-29 20:45:44,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115629476] [2020-11-29 20:45:44,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:45,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-29 20:45:45,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:45:45,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:45:45,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:45:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-11-29 20:45:45,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:45:45,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 15 [2020-11-29 20:45:45,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106628261] [2020-11-29 20:45:45,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 20:45:45,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:45,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 20:45:45,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-11-29 20:45:45,807 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 15 states. [2020-11-29 20:45:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:46,054 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2020-11-29 20:45:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 20:45:46,054 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 94 [2020-11-29 20:45:46,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:45:46,055 INFO L225 Difference]: With dead ends: 104 [2020-11-29 20:45:46,056 INFO L226 Difference]: Without dead ends: 104 [2020-11-29 20:45:46,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-11-29 20:45:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-29 20:45:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-11-29 20:45:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-29 20:45:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2020-11-29 20:45:46,060 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 94 [2020-11-29 20:45:46,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:45:46,060 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2020-11-29 20:45:46,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 20:45:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2020-11-29 20:45:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 20:45:46,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:45:46,062 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:46,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:45:46,262 INFO L429 AbstractCegarLoop]: === Iteration 26 === [getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-29 20:45:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:46,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1646357859, now seen corresponding path program 7 times [2020-11-29 20:45:46,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:46,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848719787] [2020-11-29 20:45:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:46,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:46,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:46,455 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:45:46,456 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:45:46,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 20:45:46,510 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 44 could not be translated for associated CType ARRAY#_10_~INT# [2020-11-29 20:45:46,511 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 43 could not be translated for associated CType ARRAY#_10_~INT# [2020-11-29 20:45:46,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:45:46 BoogieIcfgContainer [2020-11-29 20:45:46,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:45:46,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:45:46,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:45:46,550 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:45:46,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:45:20" (3/4) ... [2020-11-29 20:45:46,553 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:45:46,562 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 44 could not be translated for associated CType ARRAY#_10_~INT# [2020-11-29 20:45:46,562 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 43 could not be translated for associated CType ARRAY#_10_~INT# [2020-11-29 20:45:46,643 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_581b4c7f-df9a-4713-9101-1b5e8fe12643/bin/uautomizer/witness.graphml [2020-11-29 20:45:46,643 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:45:46,645 INFO L168 Benchmark]: Toolchain (without parser) took 26792.35 ms. Allocated memory was 96.5 MB in the beginning and 174.1 MB in the end (delta: 77.6 MB). Free memory was 67.0 MB in the beginning and 111.6 MB in the end (delta: -44.6 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:45:46,645 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 96.5 MB. Free memory was 66.7 MB in the beginning and 66.6 MB in the end (delta: 109.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:45:46,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 96.5 MB. Free memory was 66.8 MB in the beginning and 57.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:45:46,646 INFO L168 Benchmark]: Boogie Preprocessor took 38.49 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 56.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:45:46,647 INFO L168 Benchmark]: RCFGBuilder took 560.15 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 56.0 MB in the beginning and 93.6 MB in the end (delta: -37.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:45:46,648 INFO L168 Benchmark]: TraceAbstraction took 25845.14 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 93.1 MB in the beginning and 115.8 MB in the end (delta: -22.7 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:45:46,648 INFO L168 Benchmark]: Witness Printer took 93.88 ms. Allocated memory is still 174.1 MB. Free memory was 115.8 MB in the beginning and 111.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:45:46,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 96.5 MB. Free memory was 66.7 MB in the beginning and 66.6 MB in the end (delta: 109.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 96.5 MB. Free memory was 66.8 MB in the beginning and 57.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.49 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 56.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 560.15 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 56.0 MB in the beginning and 93.6 MB in the end (delta: -37.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25845.14 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 93.1 MB in the beginning and 115.8 MB in the end (delta: -22.7 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. * Witness Printer took 93.88 ms. Allocated memory is still 174.1 MB. Free memory was 115.8 MB in the beginning and 111.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 44 could not be translated for associated CType ARRAY#_10_~INT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 43 could not be translated for associated CType ARRAY#_10_~INT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 44 could not be translated for associated CType ARRAY#_10_~INT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 43 could not be translated for associated CType ARRAY#_10_~INT# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1] int array[10]; VAL [\old(array)=null, \old(array)=null, array={11:0}] [L25] CALL, EXPR getNumbers2() VAL [array={11:0}] [L13] CALL, EXPR getNumbers() VAL [array={11:0}] [L5] int i = 0; VAL [array={11:0}, i=0] [L5] COND TRUE i < 10 VAL [array={11:0}, i=0] [L6] array[i] = i VAL [array={11:0}, i=0] [L5] ++i VAL [array={11:0}, i=1] [L5] COND TRUE i < 10 VAL [array={11:0}, i=1] [L6] array[i] = i VAL [array={11:0}, i=1] [L5] ++i VAL [array={11:0}, i=2] [L5] COND TRUE i < 10 VAL [array={11:0}, i=2] [L6] array[i] = i VAL [array={11:0}, i=2] [L5] ++i VAL [array={11:0}, i=3] [L5] COND TRUE i < 10 VAL [array={11:0}, i=3] [L6] array[i] = i VAL [array={11:0}, i=3] [L5] ++i VAL [array={11:0}, i=4] [L5] COND TRUE i < 10 VAL [array={11:0}, i=4] [L6] array[i] = i VAL [array={11:0}, i=4] [L5] ++i VAL [array={11:0}, i=5] [L5] COND TRUE i < 10 VAL [array={11:0}, i=5] [L6] array[i] = i VAL [array={11:0}, i=5] [L5] ++i VAL [array={11:0}, i=6] [L5] COND TRUE i < 10 VAL [array={11:0}, i=6] [L6] array[i] = i VAL [array={11:0}, i=6] [L5] ++i VAL [array={11:0}, i=7] [L5] COND TRUE i < 10 VAL [array={11:0}, i=7] [L6] array[i] = i VAL [array={11:0}, i=7] [L5] ++i VAL [array={11:0}, i=8] [L5] COND TRUE i < 10 VAL [array={11:0}, i=8] [L6] array[i] = i VAL [array={11:0}, i=8] [L5] ++i VAL [array={11:0}, i=9] [L5] COND TRUE i < 10 VAL [array={11:0}, i=9] [L6] array[i] = i VAL [array={11:0}, i=9] [L5] ++i VAL [array={11:0}, i=10] [L5] COND FALSE !(i < 10) VAL [array={11:0}, i=10] [L9] return array; VAL [\result={11:0}, array={11:0}, i=10] [L13] RET, EXPR getNumbers() VAL [array={11:0}, getNumbers()={11:0}] [L13] int* numbers = getNumbers(); [L15] int numbers2[10]; [L17] int i = 0; VAL [array={11:0}, i=0, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=0, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=0, numbers={11:0}, numbers2={10:0}, numbers[i]=0] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=0, numbers={11:0}, numbers2={10:0}, numbers[i]=0] [L17] ++i VAL [array={11:0}, i=1, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=1, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=1, numbers={11:0}, numbers2={10:0}, numbers[i]=1] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=1, numbers={11:0}, numbers2={10:0}, numbers[i]=1] [L17] ++i VAL [array={11:0}, i=2, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=2, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=2, numbers={11:0}, numbers2={10:0}, numbers[i]=2] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=2, numbers={11:0}, numbers2={10:0}, numbers[i]=2] [L17] ++i VAL [array={11:0}, i=3, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=3, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=3, numbers={11:0}, numbers2={10:0}, numbers[i]=3] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=3, numbers={11:0}, numbers2={10:0}, numbers[i]=3] [L17] ++i VAL [array={11:0}, i=4, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=4, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=4, numbers={11:0}, numbers2={10:0}, numbers[i]=4] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=4, numbers={11:0}, numbers2={10:0}, numbers[i]=4] [L17] ++i VAL [array={11:0}, i=5, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=5, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=5, numbers={11:0}, numbers2={10:0}, numbers[i]=5] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=5, numbers={11:0}, numbers2={10:0}, numbers[i]=5] [L17] ++i VAL [array={11:0}, i=6, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=6, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=6, numbers={11:0}, numbers2={10:0}, numbers[i]=6] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=6, numbers={11:0}, numbers2={10:0}, numbers[i]=6] [L17] ++i VAL [array={11:0}, i=7, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=7, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=7, numbers={11:0}, numbers2={10:0}, numbers[i]=7] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=7, numbers={11:0}, numbers2={10:0}, numbers[i]=7] [L17] ++i VAL [array={11:0}, i=8, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=8, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=8, numbers={11:0}, numbers2={10:0}, numbers[i]=8] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=8, numbers={11:0}, numbers2={10:0}, numbers[i]=8] [L17] ++i VAL [array={11:0}, i=9, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=9, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=9, numbers={11:0}, numbers2={10:0}, numbers[i]=9] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=9, numbers={11:0}, numbers2={10:0}, numbers[i]=9] [L17] ++i VAL [array={11:0}, i=10, numbers={11:0}, numbers2={10:0}] [L17] COND FALSE !(i < 10) VAL [array={11:0}, i=10, numbers={11:0}, numbers2={10:0}] [L21] return numbers2; [L21] return numbers2; VAL [\result={10:0}, array={11:0}, i=10, numbers={11:0}] [L25] RET, EXPR getNumbers2() VAL [array={11:0}, getNumbers2()={10:0}] [L25] int *numbers = getNumbers2(); [L26] numbers[0] = 100 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.6s, OverallIterations: 26, TraceHistogramMax: 10, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 622 SDtfs, 755 SDslu, 2900 SDs, 0 SdLazy, 3207 SolverSat, 204 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1429 GetRequests, 1093 SyntacticMatches, 8 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 57 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 2267 NumberOfCodeBlocks, 2130 NumberOfCodeBlocksAsserted, 92 NumberOfCheckSat, 2121 ConstructedInterpolants, 19 QuantifiedInterpolants, 520576 SizeOfPredicates, 50 NumberOfNonLiveVariables, 3567 ConjunctsInSsa, 280 ConjunctsInUnsatCore, 47 InterpolantComputations, 8 PerfectInterpolantSequences, 2935/4994 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 incorrect! Received shutdown request...