./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/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 134c0db99ce5251339642354d8ec6411765b7878 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-11-15 21:57:25,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:57:25,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:57:25,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:57:25,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:57:25,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:57:25,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:57:25,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:57:25,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:57:25,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:57:25,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:57:25,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:57:25,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:57:25,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:57:25,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:57:25,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:57:25,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:57:25,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:57:25,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:57:25,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:57:25,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:57:25,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:57:25,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:57:25,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:57:25,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:57:25,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:57:25,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:57:25,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:57:25,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:57:25,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:57:25,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:57:25,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:57:25,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:57:25,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:57:25,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:57:25,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:57:25,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:57:25,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:57:25,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:57:25,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:57:25,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:57:25,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 21:57:25,484 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:57:25,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:57:25,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:57:25,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:57:25,485 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:57:25,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:57:25,486 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:57:25,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:57:25,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:57:25,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:57:25,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:57:25,487 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 21:57:25,487 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 21:57:25,487 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 21:57:25,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:57:25,488 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:57:25,488 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:57:25,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:57:25,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:57:25,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:57:25,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:57:25,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:57:25,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:57:25,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:57:25,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:57:25,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:57:25,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/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 -> 134c0db99ce5251339642354d8ec6411765b7878 [2019-11-15 21:57:25,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:57:25,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:57:25,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:57:25,528 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:57:25,528 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:57:25,529 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2019-11-15 21:57:25,581 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/data/6f99b8654/27cf9242e2c3401a85ff4b39e0bb5578/FLAG5c00eab2e [2019-11-15 21:57:26,082 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:57:26,083 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2019-11-15 21:57:26,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/data/6f99b8654/27cf9242e2c3401a85ff4b39e0bb5578/FLAG5c00eab2e [2019-11-15 21:57:26,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/data/6f99b8654/27cf9242e2c3401a85ff4b39e0bb5578 [2019-11-15 21:57:26,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:57:26,384 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 21:57:26,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:57:26,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:57:26,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:57:26,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228027dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26, skipping insertion in model container [2019-11-15 21:57:26,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,399 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:57:26,445 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:57:26,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:57:26,765 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:57:26,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:57:26,861 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:57:26,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26 WrapperNode [2019-11-15 21:57:26,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:57:26,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:57:26,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:57:26,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:57:26,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (1/1) ... [2019-11-15 21:57:26,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:57:26,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:57:26,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:57:26,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:57:26,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/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 [2019-11-15 21:57:27,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 21:57:27,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:57:27,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 21:57:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 21:57:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 21:57:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 21:57:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 21:57:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure knapsack [2019-11-15 21:57:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 21:57:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 21:57:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 21:57:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 21:57:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 21:57:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 21:57:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 21:57:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 21:57:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 21:57:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 21:57:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 21:57:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 21:57:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 21:57:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 21:57:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 21:57:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 21:57:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 21:57:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 21:57:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 21:57:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 21:57:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 21:57:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 21:57:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 21:57:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 21:57:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 21:57:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 21:57:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 21:57:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 21:57:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 21:57:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 21:57:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 21:57:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 21:57:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 21:57:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 21:57:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 21:57:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 21:57:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 21:57:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 21:57:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 21:57:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 21:57:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 21:57:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 21:57:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 21:57:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 21:57:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 21:57:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 21:57:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 21:57:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 21:57:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 21:57:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 21:57:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 21:57:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 21:57:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 21:57:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 21:57:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 21:57:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 21:57:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 21:57:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 21:57:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 21:57:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 21:57:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 21:57:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 21:57:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 21:57:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 21:57:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 21:57:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 21:57:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 21:57:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 21:57:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 21:57:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 21:57:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 21:57:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 21:57:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 21:57:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 21:57:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 21:57:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 21:57:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 21:57:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 21:57:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 21:57:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 21:57:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 21:57:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 21:57:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 21:57:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 21:57:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 21:57:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 21:57:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 21:57:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 21:57:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 21:57:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 21:57:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 21:57:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 21:57:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 21:57:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 21:57:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 21:57:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 21:57:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 21:57:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 21:57:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 21:57:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 21:57:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 21:57:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 21:57:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 21:57:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 21:57:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 21:57:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 21:57:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 21:57:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 21:57:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 21:57:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure knapsack [2019-11-15 21:57:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:57:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:57:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 21:57:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:57:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:57:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 21:57:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:57:27,657 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:57:27,657 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 21:57:27,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:57:27 BoogieIcfgContainer [2019-11-15 21:57:27,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:57:27,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:57:27,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:57:27,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:57:27,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:57:26" (1/3) ... [2019-11-15 21:57:27,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac94573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:57:27, skipping insertion in model container [2019-11-15 21:57:27,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:57:26" (2/3) ... [2019-11-15 21:57:27,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac94573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:57:27, skipping insertion in model container [2019-11-15 21:57:27,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:57:27" (3/3) ... [2019-11-15 21:57:27,666 INFO L109 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2019-11-15 21:57:27,679 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:57:27,685 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 27 error locations. [2019-11-15 21:57:27,704 INFO L249 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2019-11-15 21:57:27,721 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:57:27,721 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 21:57:27,721 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:57:27,721 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:57:27,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:57:27,722 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:57:27,722 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:57:27,722 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:57:27,737 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2019-11-15 21:57:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 21:57:27,746 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:27,747 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:27,748 INFO L410 AbstractCegarLoop]: === Iteration 1 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:27,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1852035194, now seen corresponding path program 1 times [2019-11-15 21:57:27,761 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:27,761 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195551224] [2019-11-15 21:57:27,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:27,762 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:27,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:28,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195551224] [2019-11-15 21:57:28,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:57:28,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:57:28,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538687496] [2019-11-15 21:57:28,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:57:28,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:28,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:57:28,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:57:28,035 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 6 states. [2019-11-15 21:57:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:28,374 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2019-11-15 21:57:28,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:57:28,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 21:57:28,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:28,385 INFO L225 Difference]: With dead ends: 82 [2019-11-15 21:57:28,385 INFO L226 Difference]: Without dead ends: 79 [2019-11-15 21:57:28,386 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:57:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-15 21:57:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2019-11-15 21:57:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-15 21:57:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2019-11-15 21:57:28,433 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 11 [2019-11-15 21:57:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:28,434 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2019-11-15 21:57:28,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:57:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2019-11-15 21:57:28,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 21:57:28,435 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:28,435 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:28,436 INFO L410 AbstractCegarLoop]: === Iteration 2 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:28,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1852035193, now seen corresponding path program 1 times [2019-11-15 21:57:28,436 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:28,437 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856633602] [2019-11-15 21:57:28,437 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:28,437 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:28,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:28,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856633602] [2019-11-15 21:57:28,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:57:28,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:57:28,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023176030] [2019-11-15 21:57:28,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:57:28,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:28,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:57:28,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:57:28,560 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 4 states. [2019-11-15 21:57:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:28,719 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2019-11-15 21:57:28,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:57:28,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 21:57:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:28,721 INFO L225 Difference]: With dead ends: 71 [2019-11-15 21:57:28,721 INFO L226 Difference]: Without dead ends: 71 [2019-11-15 21:57:28,722 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:57:28,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-15 21:57:28,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-11-15 21:57:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-15 21:57:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2019-11-15 21:57:28,737 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 11 [2019-11-15 21:57:28,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:28,738 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2019-11-15 21:57:28,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:57:28,738 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2019-11-15 21:57:28,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 21:57:28,740 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:28,740 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:28,741 INFO L410 AbstractCegarLoop]: === Iteration 3 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:28,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:28,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1689360026, now seen corresponding path program 1 times [2019-11-15 21:57:28,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:28,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431659579] [2019-11-15 21:57:28,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:28,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:28,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:28,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431659579] [2019-11-15 21:57:28,840 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:57:28,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:57:28,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711681305] [2019-11-15 21:57:28,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:57:28,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:28,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:57:28,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:57:28,848 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 4 states. [2019-11-15 21:57:29,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:29,003 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2019-11-15 21:57:29,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:57:29,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-15 21:57:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:29,005 INFO L225 Difference]: With dead ends: 70 [2019-11-15 21:57:29,005 INFO L226 Difference]: Without dead ends: 70 [2019-11-15 21:57:29,006 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:57:29,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-15 21:57:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-11-15 21:57:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-15 21:57:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2019-11-15 21:57:29,012 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 13 [2019-11-15 21:57:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:29,012 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2019-11-15 21:57:29,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:57:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2019-11-15 21:57:29,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 21:57:29,013 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:29,013 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:29,014 INFO L410 AbstractCegarLoop]: === Iteration 4 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1689360027, now seen corresponding path program 1 times [2019-11-15 21:57:29,014 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:29,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619674190] [2019-11-15 21:57:29,015 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:29,015 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:29,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:29,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619674190] [2019-11-15 21:57:29,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:57:29,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:57:29,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54937005] [2019-11-15 21:57:29,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:57:29,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:29,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:57:29,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:57:29,149 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 6 states. [2019-11-15 21:57:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:29,423 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2019-11-15 21:57:29,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:57:29,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-15 21:57:29,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:29,425 INFO L225 Difference]: With dead ends: 74 [2019-11-15 21:57:29,425 INFO L226 Difference]: Without dead ends: 74 [2019-11-15 21:57:29,425 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:57:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-15 21:57:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2019-11-15 21:57:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-15 21:57:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2019-11-15 21:57:29,434 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 13 [2019-11-15 21:57:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:29,434 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2019-11-15 21:57:29,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:57:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2019-11-15 21:57:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 21:57:29,436 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:29,437 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:29,437 INFO L410 AbstractCegarLoop]: === Iteration 5 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:29,438 INFO L82 PathProgramCache]: Analyzing trace with hash -294385186, now seen corresponding path program 1 times [2019-11-15 21:57:29,438 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:29,438 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588197048] [2019-11-15 21:57:29,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:29,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:29,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:29,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588197048] [2019-11-15 21:57:29,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698763238] [2019-11-15 21:57:29,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/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 [2019-11-15 21:57:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:29,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:57:29,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:57:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:29,747 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:57:29,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-11-15 21:57:29,747 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500272335] [2019-11-15 21:57:29,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:57:29,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:29,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:57:29,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:57:29,749 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 5 states. [2019-11-15 21:57:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:29,774 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2019-11-15 21:57:29,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:57:29,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-15 21:57:29,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:29,779 INFO L225 Difference]: With dead ends: 92 [2019-11-15 21:57:29,779 INFO L226 Difference]: Without dead ends: 92 [2019-11-15 21:57:29,779 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:57:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-15 21:57:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2019-11-15 21:57:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-15 21:57:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2019-11-15 21:57:29,796 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 17 [2019-11-15 21:57:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:29,796 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2019-11-15 21:57:29,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:57:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2019-11-15 21:57:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 21:57:29,797 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:29,798 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:30,001 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:57:30,001 INFO L410 AbstractCegarLoop]: === Iteration 6 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:30,003 INFO L82 PathProgramCache]: Analyzing trace with hash 406679392, now seen corresponding path program 1 times [2019-11-15 21:57:30,003 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:30,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853958535] [2019-11-15 21:57:30,003 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:30,003 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:30,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:30,106 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853958535] [2019-11-15 21:57:30,106 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538087849] [2019-11-15 21:57:30,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/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 [2019-11-15 21:57:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:30,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-15 21:57:30,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:57:30,280 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_34|], 9=[|v_#valid_45|]} [2019-11-15 21:57:30,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:30,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:30,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:30,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:30,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:30,300 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:30,310 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 29 [2019-11-15 21:57:30,310 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:57:30,337 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:57:30,389 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:57:30,390 INFO L375 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 40 treesize of output 58 [2019-11-15 21:57:30,391 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 21:57:30,425 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:57:30,430 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-15 21:57:30,431 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:63, output treesize:66 [2019-11-15 21:57:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:30,609 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:57:30,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2019-11-15 21:57:30,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771880827] [2019-11-15 21:57:30,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 21:57:30,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:30,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 21:57:30,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:57:30,612 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 10 states. [2019-11-15 21:57:31,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:31,009 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2019-11-15 21:57:31,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:57:31,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-15 21:57:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:31,011 INFO L225 Difference]: With dead ends: 82 [2019-11-15 21:57:31,011 INFO L226 Difference]: Without dead ends: 82 [2019-11-15 21:57:31,011 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:57:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-15 21:57:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2019-11-15 21:57:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-15 21:57:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2019-11-15 21:57:31,022 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 17 [2019-11-15 21:57:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:31,023 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2019-11-15 21:57:31,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 21:57:31,023 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2019-11-15 21:57:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:57:31,024 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:31,024 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:31,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:57:31,228 INFO L410 AbstractCegarLoop]: === Iteration 7 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:31,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:31,229 INFO L82 PathProgramCache]: Analyzing trace with hash 563630413, now seen corresponding path program 1 times [2019-11-15 21:57:31,229 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:31,229 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671834666] [2019-11-15 21:57:31,229 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:31,229 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:31,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:57:31,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671834666] [2019-11-15 21:57:31,282 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:57:31,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:57:31,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587642727] [2019-11-15 21:57:31,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:57:31,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:57:31,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:57:31,284 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 4 states. [2019-11-15 21:57:31,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:31,415 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2019-11-15 21:57:31,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:57:31,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-11-15 21:57:31,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:31,416 INFO L225 Difference]: With dead ends: 79 [2019-11-15 21:57:31,416 INFO L226 Difference]: Without dead ends: 79 [2019-11-15 21:57:31,417 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:57:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-15 21:57:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-11-15 21:57:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-15 21:57:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2019-11-15 21:57:31,422 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 19 [2019-11-15 21:57:31,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:31,422 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2019-11-15 21:57:31,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:57:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2019-11-15 21:57:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:57:31,423 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:31,423 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:31,423 INFO L410 AbstractCegarLoop]: === Iteration 8 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:31,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:31,423 INFO L82 PathProgramCache]: Analyzing trace with hash 563630414, now seen corresponding path program 1 times [2019-11-15 21:57:31,424 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:31,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950078066] [2019-11-15 21:57:31,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:31,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:31,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:57:31,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950078066] [2019-11-15 21:57:31,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:57:31,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 21:57:31,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463191320] [2019-11-15 21:57:31,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:57:31,507 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:31,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:57:31,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:57:31,508 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 7 states. [2019-11-15 21:57:31,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:31,725 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2019-11-15 21:57:31,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:57:31,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-15 21:57:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:31,726 INFO L225 Difference]: With dead ends: 83 [2019-11-15 21:57:31,726 INFO L226 Difference]: Without dead ends: 83 [2019-11-15 21:57:31,727 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:57:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-15 21:57:31,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2019-11-15 21:57:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-15 21:57:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2019-11-15 21:57:31,731 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 19 [2019-11-15 21:57:31,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:31,732 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2019-11-15 21:57:31,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:57:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2019-11-15 21:57:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:57:31,733 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:31,733 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:31,733 INFO L410 AbstractCegarLoop]: === Iteration 9 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:31,733 INFO L82 PathProgramCache]: Analyzing trace with hash -23129087, now seen corresponding path program 1 times [2019-11-15 21:57:31,733 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:31,734 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163964016] [2019-11-15 21:57:31,734 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:31,734 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:31,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:31,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163964016] [2019-11-15 21:57:31,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424138588] [2019-11-15 21:57:31,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/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 [2019-11-15 21:57:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:31,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 21:57:31,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:57:31,999 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_35|], 6=[|v_#valid_46|]} [2019-11-15 21:57:32,008 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:32,010 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:32,011 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:32,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:32,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:32,033 INFO L341 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2019-11-15 21:57:32,034 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2019-11-15 21:57:32,034 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:57:32,051 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:57:32,075 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:57:32,075 INFO L375 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 31 treesize of output 35 [2019-11-15 21:57:32,076 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 21:57:32,104 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:57:32,106 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-15 21:57:32,106 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:55, output treesize:62 [2019-11-15 21:57:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:57:32,239 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:57:32,239 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2019-11-15 21:57:32,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010570514] [2019-11-15 21:57:32,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 21:57:32,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:32,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 21:57:32,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:57:32,241 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 11 states. [2019-11-15 21:57:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:32,660 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2019-11-15 21:57:32,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:57:32,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2019-11-15 21:57:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:32,662 INFO L225 Difference]: With dead ends: 82 [2019-11-15 21:57:32,662 INFO L226 Difference]: Without dead ends: 82 [2019-11-15 21:57:32,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-15 21:57:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-15 21:57:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2019-11-15 21:57:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-15 21:57:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2019-11-15 21:57:32,667 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 19 [2019-11-15 21:57:32,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:32,667 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2019-11-15 21:57:32,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 21:57:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2019-11-15 21:57:32,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 21:57:32,668 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:32,668 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:32,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:57:32,871 INFO L410 AbstractCegarLoop]: === Iteration 10 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash 256944145, now seen corresponding path program 1 times [2019-11-15 21:57:32,872 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:32,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971496233] [2019-11-15 21:57:32,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:32,873 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:32,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:57:32,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971496233] [2019-11-15 21:57:32,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984193773] [2019-11-15 21:57:32,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/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 [2019-11-15 21:57:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:33,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:57:33,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:57:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:57:33,079 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:57:33,079 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-11-15 21:57:33,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618859111] [2019-11-15 21:57:33,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:57:33,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:33,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:57:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:57:33,080 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 5 states. [2019-11-15 21:57:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:33,121 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2019-11-15 21:57:33,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:57:33,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-15 21:57:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:33,122 INFO L225 Difference]: With dead ends: 103 [2019-11-15 21:57:33,123 INFO L226 Difference]: Without dead ends: 103 [2019-11-15 21:57:33,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:57:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-15 21:57:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2019-11-15 21:57:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-15 21:57:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2019-11-15 21:57:33,133 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 23 [2019-11-15 21:57:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:33,135 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2019-11-15 21:57:33,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:57:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2019-11-15 21:57:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 21:57:33,145 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:33,145 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:33,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:57:33,348 INFO L410 AbstractCegarLoop]: === Iteration 11 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:33,348 INFO L82 PathProgramCache]: Analyzing trace with hash -764124209, now seen corresponding path program 1 times [2019-11-15 21:57:33,348 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:33,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457890569] [2019-11-15 21:57:33,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:33,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:33,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:57:33,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457890569] [2019-11-15 21:57:33,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414690587] [2019-11-15 21:57:33,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/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 [2019-11-15 21:57:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:33,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 21:57:33,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:57:33,617 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_36|], 3=[|v_#valid_47|]} [2019-11-15 21:57:33,629 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:33,631 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:33,632 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:57:33,674 INFO L341 Elim1Store]: treesize reduction 18, result has 72.3 percent of original size [2019-11-15 21:57:33,675 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 61 [2019-11-15 21:57:33,675 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:57:33,717 INFO L567 ElimStorePlain]: treesize reduction 24, result has 69.2 percent of original size [2019-11-15 21:57:33,724 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2019-11-15 21:57:33,724 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 21:57:33,742 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:57:33,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:57:33,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:57:33,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:57:33,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:57:33,751 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-11-15 21:57:33,751 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:41, output treesize:89 [2019-11-15 21:57:33,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:57:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:57:33,895 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:57:33,895 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2019-11-15 21:57:33,895 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486097712] [2019-11-15 21:57:33,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 21:57:33,896 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:33,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 21:57:33,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:57:33,896 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 11 states. [2019-11-15 21:57:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:34,106 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2019-11-15 21:57:34,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:57:34,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2019-11-15 21:57:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:34,108 INFO L225 Difference]: With dead ends: 100 [2019-11-15 21:57:34,108 INFO L226 Difference]: Without dead ends: 100 [2019-11-15 21:57:34,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-15 21:57:34,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-15 21:57:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2019-11-15 21:57:34,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-15 21:57:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2019-11-15 21:57:34,112 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 23 [2019-11-15 21:57:34,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:34,113 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2019-11-15 21:57:34,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 21:57:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2019-11-15 21:57:34,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 21:57:34,114 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:34,114 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:34,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:57:34,315 INFO L410 AbstractCegarLoop]: === Iteration 12 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:34,315 INFO L82 PathProgramCache]: Analyzing trace with hash 690818164, now seen corresponding path program 1 times [2019-11-15 21:57:34,315 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:34,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256989142] [2019-11-15 21:57:34,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:34,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:34,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:57:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:57:34,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256989142] [2019-11-15 21:57:34,357 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:57:34,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:57:34,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335181621] [2019-11-15 21:57:34,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:57:34,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:57:34,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:57:34,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:57:34,358 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 6 states. [2019-11-15 21:57:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:57:34,526 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2019-11-15 21:57:34,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:57:34,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-15 21:57:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:57:34,528 INFO L225 Difference]: With dead ends: 94 [2019-11-15 21:57:34,528 INFO L226 Difference]: Without dead ends: 94 [2019-11-15 21:57:34,528 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:57:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-15 21:57:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2019-11-15 21:57:34,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-15 21:57:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2019-11-15 21:57:34,532 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 27 [2019-11-15 21:57:34,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:57:34,532 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2019-11-15 21:57:34,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:57:34,532 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2019-11-15 21:57:34,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 21:57:34,533 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:57:34,533 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:57:34,533 INFO L410 AbstractCegarLoop]: === Iteration 13 === [knapsackErr16REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-15 21:57:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:57:34,534 INFO L82 PathProgramCache]: Analyzing trace with hash 690818165, now seen corresponding path program 1 times [2019-11-15 21:57:34,534 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:57:34,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108230632] [2019-11-15 21:57:34,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:34,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:57:34,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:57:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:57:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:57:34,626 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:57:34,626 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:57:34,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:57:34 BoogieIcfgContainer [2019-11-15 21:57:34,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:57:34,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:57:34,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:57:34,683 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:57:34,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:57:27" (3/4) ... [2019-11-15 21:57:34,685 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 21:57:34,736 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ce03cdfe-910c-4966-8bdd-cec25481dc88/bin/uautomizer/witness.graphml [2019-11-15 21:57:34,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:57:34,737 INFO L168 Benchmark]: Toolchain (without parser) took 8354.00 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 316.1 MB). Free memory was 943.5 MB in the beginning and 1.2 GB in the end (delta: -224.9 MB). Peak memory consumption was 91.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:57:34,738 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:57:34,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:57:34,739 INFO L168 Benchmark]: Boogie Preprocessor took 81.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:57:34,739 INFO L168 Benchmark]: RCFGBuilder took 714.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:57:34,740 INFO L168 Benchmark]: TraceAbstraction took 7022.72 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 185.6 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -128.4 MB). Peak memory consumption was 57.2 MB. Max. memory is 11.5 GB. [2019-11-15 21:57:34,740 INFO L168 Benchmark]: Witness Printer took 53.65 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-11-15 21:57:34,742 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 476.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 714.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7022.72 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 185.6 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -128.4 MB). Peak memory consumption was 57.2 MB. Max. memory is 11.5 GB. * Witness Printer took 53.65 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 517]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND TRUE N < 1 [L530] N = 1 VAL [M=0, N=1] [L532] COND TRUE M < 1 [L533] M = 1 VAL [M=1, N=1] [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, best={-2:0}, cost={1:0}, i=0, M=1, N=1, size={-3:0}, val={-1:0}] [L540] COND TRUE i < N [L542] size[i] = __VERIFIER_nondet_int() VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, __VERIFIER_nondet_int()=1, best={-2:0}, cost={1:0}, i=0, M=1, N=1, size={-3:0}, val={-1:0}] [L543] val[i] = __VERIFIER_nondet_int() VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, __VERIFIER_nondet_int()=1, best={-2:0}, cost={1:0}, i=0, M=1, N=1, size={-3:0}, val={-1:0}] [L540] i++ VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, best={-2:0}, cost={1:0}, i=1, M=1, N=1, size={-3:0}, val={-1:0}] [L540] COND FALSE !(i < N) VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, best={-2:0}, cost={1:0}, i=1, M=1, N=1, size={-3:0}, val={-1:0}] [L546] int i = 0; VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, best={-2:0}, cost={1:0}, i=0, i=1, M=1, N=1, size={-3:0}, val={-1:0}] [L546] COND TRUE i < M [L548] cost[i] = __VERIFIER_nondet_int() VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, __VERIFIER_nondet_int()=1, best={-2:0}, cost={1:0}, i=0, i=1, M=1, N=1, size={-3:0}, val={-1:0}] [L546] i++ VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, best={-2:0}, cost={1:0}, i=1, i=1, M=1, N=1, size={-3:0}, val={-1:0}] [L546] COND FALSE !(i < M) VAL [__builtin_alloca (M * sizeof(int))={-2:0}, __builtin_alloca (M * sizeof(int))={1:0}, __builtin_alloca (N * sizeof(int))={-1:0}, __builtin_alloca (N * sizeof(int))={-3:0}, best={-2:0}, cost={1:0}, i=1, i=1, M=1, N=1, size={-3:0}, val={-1:0}] [L551] CALL knapsack(size, val, N, cost, best, M) VAL [\old(M)=1, \old(N)=1, best={-2:0}, cost={1:0}, size={-3:0}, val={-1:0}] [L514] int i, j; [L515] j = 1 VAL [\old(M)=1, \old(N)=1, best={-2:0}, best={-2:0}, cost={1:0}, cost={1:0}, j=1, M=1, N=1, size={-3:0}, size={-3:0}, val={-1:0}, val={-1:0}] [L515] COND TRUE j <= N [L516] i = 1 VAL [\old(M)=1, \old(N)=1, best={-2:0}, best={-2:0}, cost={1:0}, cost={1:0}, i=1, j=1, M=1, N=1, size={-3:0}, size={-3:0}, val={-1:0}, val={-1:0}] [L516] COND TRUE i <= M VAL [\old(M)=1, \old(N)=1, best={-2:0}, best={-2:0}, cost={1:0}, cost={1:0}, i=1, j=1, M=1, N=1, size={-3:0}, size={-3:0}, val={-1:0}, val={-1:0}] [L517] size[j] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 88 locations, 27 error locations. Result: UNSAFE, OverallTime: 6.9s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 590 SDtfs, 967 SDslu, 491 SDs, 0 SdLazy, 1657 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=10, 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, 12 MinimizatonAttempts, 36 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 294 ConstructedInterpolants, 32 QuantifiedInterpolants, 59278 SizeOfPredicates, 26 NumberOfNonLiveVariables, 564 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 20/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...