./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/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 60fa12f4a8e344f82de5faf31b8f2cbfbaaacd93 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:02:24,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:25,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:25,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:25,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:25,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:25,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:25,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:25,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:25,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:25,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:25,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:25,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:25,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:25,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:25,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:25,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:25,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:25,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:25,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:25,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:25,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:25,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:25,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:25,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:25,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:25,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:25,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:25,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:25,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:25,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:25,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:25,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:25,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:25,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:25,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:25,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:25,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:25,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:25,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:25,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:25,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:02:25,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:25,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:25,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:25,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:25,154 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:25,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:25,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:02:25,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:02:25,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:02:25,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:02:25,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:25,156 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:02:25,156 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:02:25,156 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:02:25,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:02:25,157 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:02:25,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:02:25,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:25,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:25,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:25,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:02:25,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:02:25,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:25,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:25,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:02:25,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:02:25,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:02:25,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:25,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60fa12f4a8e344f82de5faf31b8f2cbfbaaacd93 [2020-11-28 03:02:25,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:25,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:25,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:25,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:25,493 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:25,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2020-11-28 03:02:25,562 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/data/1a665d16d/7c39141c5c2f4ae2b30f1883d35f9469/FLAGe6dbb45dc [2020-11-28 03:02:26,076 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:26,077 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2020-11-28 03:02:26,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/data/1a665d16d/7c39141c5c2f4ae2b30f1883d35f9469/FLAGe6dbb45dc [2020-11-28 03:02:26,475 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/data/1a665d16d/7c39141c5c2f4ae2b30f1883d35f9469 [2020-11-28 03:02:26,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:26,481 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:02:26,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:26,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:26,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:26,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264c9980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26, skipping insertion in model container [2020-11-28 03:02:26,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:26,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:26,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:26,763 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:26,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:26,799 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:26,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26 WrapperNode [2020-11-28 03:02:26,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:26,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:26,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:26,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:26,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (1/1) ... [2020-11-28 03:02:26,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:26,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:26,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:26,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:26,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:02:26,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:26,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2020-11-28 03:02:26,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:02:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-28 03:02:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2020-11-28 03:02:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:02:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:02:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:02:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:02:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:02:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:27,239 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:27,239 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 03:02:27,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:27 BoogieIcfgContainer [2020-11-28 03:02:27,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:27,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:02:27,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:02:27,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:02:27,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:02:26" (1/3) ... [2020-11-28 03:02:27,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9cc0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:27, skipping insertion in model container [2020-11-28 03:02:27,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:26" (2/3) ... [2020-11-28 03:02:27,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9cc0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:27, skipping insertion in model container [2020-11-28 03:02:27,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:27" (3/3) ... [2020-11-28 03:02:27,267 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-2.c [2020-11-28 03:02:27,277 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:02:27,298 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-28 03:02:27,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 03:02:27,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:02:27,347 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:02:27,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:02:27,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:27,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:27,347 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:02:27,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:27,347 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:02:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-28 03:02:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:02:27,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:27,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:27,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:27,373 INFO L82 PathProgramCache]: Analyzing trace with hash 543879226, now seen corresponding path program 1 times [2020-11-28 03:02:27,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:27,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185137636] [2020-11-28 03:02:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:27,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185137636] [2020-11-28 03:02:27,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:27,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:02:27,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111654059] [2020-11-28 03:02:27,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:02:27,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:27,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:02:27,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:27,743 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-11-28 03:02:28,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:28,003 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-11-28 03:02:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:02:28,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:02:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:28,012 INFO L225 Difference]: With dead ends: 42 [2020-11-28 03:02:28,012 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:02:28,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:02:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2020-11-28 03:02:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:02:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-28 03:02:28,062 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2020-11-28 03:02:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:28,063 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-28 03:02:28,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:02:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-28 03:02:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:02:28,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:28,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:28,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:02:28,065 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:28,066 INFO L82 PathProgramCache]: Analyzing trace with hash 543879227, now seen corresponding path program 1 times [2020-11-28 03:02:28,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:28,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476753251] [2020-11-28 03:02:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:28,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476753251] [2020-11-28 03:02:28,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:28,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:02:28,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725092695] [2020-11-28 03:02:28,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:02:28,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:28,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:02:28,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:28,246 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-11-28 03:02:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:28,476 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-11-28 03:02:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:02:28,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 03:02:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:28,478 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:02:28,478 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 03:02:28,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:02:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 03:02:28,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-11-28 03:02:28,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:02:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-28 03:02:28,483 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2020-11-28 03:02:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:28,485 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-28 03:02:28,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:02:28,485 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-28 03:02:28,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:02:28,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:28,487 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:28,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:02:28,487 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:28,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:28,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2089391026, now seen corresponding path program 1 times [2020-11-28 03:02:28,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:28,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141526745] [2020-11-28 03:02:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:28,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141526745] [2020-11-28 03:02:28,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793594033] [2020-11-28 03:02:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:28,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:02:28,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:28,851 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:02:28,851 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-28 03:02:28,852 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:02:28,881 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-11-28 03:02:28,887 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:02:28,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-11-28 03:02:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:28,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:02:28,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-28 03:02:28,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668891873] [2020-11-28 03:02:28,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:02:28,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:28,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:02:28,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:02:28,925 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-11-28 03:02:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:29,136 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-28 03:02:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:02:29,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-28 03:02:29,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:29,138 INFO L225 Difference]: With dead ends: 27 [2020-11-28 03:02:29,138 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:02:29,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:02:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:02:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-11-28 03:02:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:02:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-11-28 03:02:29,142 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2020-11-28 03:02:29,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:29,143 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-11-28 03:02:29,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:02:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-11-28 03:02:29,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:02:29,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:29,144 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:29,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:02:29,366 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:29,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:29,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1912985381, now seen corresponding path program 2 times [2020-11-28 03:02:29,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:29,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209790273] [2020-11-28 03:02:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:29,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209790273] [2020-11-28 03:02:29,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438141166] [2020-11-28 03:02:29,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:29,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:02:29,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:02:29,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:02:29,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:29,776 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-28 03:02:29,776 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:02:29,777 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-28 03:02:29,777 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:02:29,803 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-11-28 03:02:29,809 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:02:29,809 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-11-28 03:02:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:29,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:02:29,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2020-11-28 03:02:29,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74088476] [2020-11-28 03:02:29,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:02:29,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:29,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:02:29,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:02:29,949 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-11-28 03:02:30,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:30,010 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-11-28 03:02:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:02:30,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-28 03:02:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:30,012 INFO L225 Difference]: With dead ends: 26 [2020-11-28 03:02:30,012 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 03:02:30,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:02:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 03:02:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-11-28 03:02:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:02:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-28 03:02:30,016 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2020-11-28 03:02:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:30,016 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-28 03:02:30,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:02:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-28 03:02:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:02:30,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:30,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:30,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:30,230 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2027302431, now seen corresponding path program 1 times [2020-11-28 03:02:30,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:30,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209291638] [2020-11-28 03:02:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:02:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:02:30,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209291638] [2020-11-28 03:02:30,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:30,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:02:30,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292462455] [2020-11-28 03:02:30,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:02:30,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:30,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:02:30,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:02:30,376 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-11-28 03:02:30,511 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-28 03:02:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:30,691 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-11-28 03:02:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:02:30,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-11-28 03:02:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:30,692 INFO L225 Difference]: With dead ends: 23 [2020-11-28 03:02:30,692 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:02:30,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:02:30,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:02:30,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 03:02:30,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:02:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-28 03:02:30,696 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2020-11-28 03:02:30,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:30,697 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-28 03:02:30,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:02:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-28 03:02:30,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:02:30,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:30,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:30,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:02:30,702 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:30,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:30,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2027302432, now seen corresponding path program 1 times [2020-11-28 03:02:30,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:30,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993927456] [2020-11-28 03:02:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:30,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:02:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:30,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993927456] [2020-11-28 03:02:30,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446759247] [2020-11-28 03:02:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:30,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:02:30,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:30,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:02:30,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-11-28 03:02:30,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399690393] [2020-11-28 03:02:30,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:02:30,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:30,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:02:30,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:02:30,935 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-11-28 03:02:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:31,042 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-28 03:02:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:02:31,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-28 03:02:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:31,043 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:02:31,043 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 03:02:31,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:02:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 03:02:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-11-28 03:02:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:02:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-11-28 03:02:31,047 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2020-11-28 03:02:31,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:31,048 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-11-28 03:02:31,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:02:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-11-28 03:02:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:02:31,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:31,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:31,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:31,262 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:31,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:31,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1378383287, now seen corresponding path program 2 times [2020-11-28 03:02:31,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:31,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930192241] [2020-11-28 03:02:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:31,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:02:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:31,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930192241] [2020-11-28 03:02:31,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558624799] [2020-11-28 03:02:31,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:31,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:02:31,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:02:31,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 03:02:31,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:31,504 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:02:31,504 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-28 03:02:31,505 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:02:31,536 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-11-28 03:02:31,538 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:02:31,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-11-28 03:02:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-28 03:02:31,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:02:31,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-11-28 03:02:31,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230669182] [2020-11-28 03:02:31,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:02:31,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:31,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:02:31,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:02:31,630 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2020-11-28 03:02:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:31,726 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-11-28 03:02:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:02:31,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-28 03:02:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:31,728 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:02:31,728 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:02:31,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:02:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:02:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-11-28 03:02:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:02:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-28 03:02:31,732 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2020-11-28 03:02:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:31,732 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-28 03:02:31,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:02:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-28 03:02:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:02:31,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:31,733 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:31,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:31,934 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:31,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:31,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2030859700, now seen corresponding path program 1 times [2020-11-28 03:02:31,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:31,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104497932] [2020-11-28 03:02:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:02:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:02:32,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104497932] [2020-11-28 03:02:32,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112823579] [2020-11-28 03:02:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:32,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:02:32,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:02:32,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:02:32,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2020-11-28 03:02:32,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146705731] [2020-11-28 03:02:32,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:02:32,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:32,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:02:32,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:02:32,146 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-11-28 03:02:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:32,250 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-11-28 03:02:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:02:32,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-11-28 03:02:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:32,252 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:02:32,252 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:02:32,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:02:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:02:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-28 03:02:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:02:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-28 03:02:32,256 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-11-28 03:02:32,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:32,257 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-28 03:02:32,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:02:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-28 03:02:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:02:32,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:32,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:32,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:32,474 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:32,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:32,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1845681667, now seen corresponding path program 2 times [2020-11-28 03:02:32,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:32,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245646757] [2020-11-28 03:02:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:32,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:32,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:02:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:02:32,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245646757] [2020-11-28 03:02:32,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131137715] [2020-11-28 03:02:32,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:32,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:02:32,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:02:32,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:02:32,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:02:32,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:02:32,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-11-28 03:02:32,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297990355] [2020-11-28 03:02:32,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:02:32,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:32,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:02:32,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:02:32,694 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-11-28 03:02:32,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:32,816 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-11-28 03:02:32,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:02:32,816 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-11-28 03:02:32,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:32,817 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:02:32,817 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:02:32,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:02:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:02:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-11-28 03:02:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 03:02:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-11-28 03:02:32,825 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 30 [2020-11-28 03:02:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:32,825 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-11-28 03:02:32,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:02:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-11-28 03:02:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:02:32,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:32,827 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:33,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:33,038 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2020-11-28 03:02:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:33,039 INFO L82 PathProgramCache]: Analyzing trace with hash 513923820, now seen corresponding path program 3 times [2020-11-28 03:02:33,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:33,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318058303] [2020-11-28 03:02:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:02:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:02:33,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318058303] [2020-11-28 03:02:33,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790287074] [2020-11-28 03:02:33,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:33,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 03:02:33,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:02:33,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-28 03:02:33,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:33,257 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:02:33,257 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-28 03:02:33,257 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:02:33,281 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-11-28 03:02:33,283 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:02:33,283 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-11-28 03:02:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 03:02:33,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:02:33,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2020-11-28 03:02:33,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697121229] [2020-11-28 03:02:33,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:02:33,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:33,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:02:33,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:02:33,445 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 8 states. [2020-11-28 03:02:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:33,617 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-11-28 03:02:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:02:33,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-11-28 03:02:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:33,618 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:02:33,618 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:02:33,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:02:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:02:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:02:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:02:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:02:33,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-11-28 03:02:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:33,620 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:02:33,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:02:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:02:33,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:02:33,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:02:33,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:02:33 BoogieIcfgContainer [2020-11-28 03:02:33,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:02:33,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:33,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:33,824 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:33,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:27" (3/4) ... [2020-11-28 03:02:33,828 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:02:33,834 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 03:02:33,835 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 03:02:33,835 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers [2020-11-28 03:02:33,839 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 03:02:33,839 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:02:33,840 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:02:33,840 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:02:33,873 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_72d74188-cf19-4289-8bc7-b6b2142cbbee/bin/uautomizer/witness.graphml [2020-11-28 03:02:33,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:33,874 INFO L168 Benchmark]: Toolchain (without parser) took 7392.94 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 76.9 MB in the beginning and 49.1 MB in the end (delta: 27.8 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:33,875 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 35.2 MB in the beginning and 35.1 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:33,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.18 ms. Allocated memory is still 109.1 MB. Free memory was 76.7 MB in the beginning and 86.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:33,875 INFO L168 Benchmark]: Boogie Preprocessor took 56.53 ms. Allocated memory is still 109.1 MB. Free memory was 86.4 MB in the beginning and 84.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:33,876 INFO L168 Benchmark]: RCFGBuilder took 381.00 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 71.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:33,876 INFO L168 Benchmark]: TraceAbstraction took 6569.61 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 71.1 MB in the beginning and 51.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 71.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:33,877 INFO L168 Benchmark]: Witness Printer took 48.96 ms. Allocated memory is still 159.4 MB. Free memory was 51.9 MB in the beginning and 49.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:33,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 35.2 MB in the beginning and 35.1 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.18 ms. Allocated memory is still 109.1 MB. Free memory was 76.7 MB in the beginning and 86.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.53 ms. Allocated memory is still 109.1 MB. Free memory was 86.4 MB in the beginning and 84.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 381.00 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 71.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6569.61 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 71.1 MB in the beginning and 51.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 71.9 MB. Max. memory is 16.1 GB. * Witness Printer took 48.96 ms. Allocated memory is still 159.4 MB. Free memory was 51.9 MB in the beginning and 49.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 178 SDslu, 312 SDs, 0 SdLazy, 431 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 161 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 25 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 358 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 40545 SizeOfPredicates, 11 NumberOfNonLiveVariables, 725 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 71/207 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...