./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.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_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/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 32d9f155778c5c4efaa55d37fdad329bb0d271b5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:36:54,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:36:54,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:36:54,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:36:54,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:36:54,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:36:54,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:36:54,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:36:54,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:36:54,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:36:54,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:36:54,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:36:54,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:36:54,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:36:54,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:36:54,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:36:54,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:36:54,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:36:54,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:36:54,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:36:54,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:36:54,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:36:54,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:36:54,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:36:54,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:36:54,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:36:54,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:36:54,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:36:54,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:36:54,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:36:54,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:36:54,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:36:54,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:36:54,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:36:54,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:36:54,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:36:54,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:36:54,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:36:54,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:36:54,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:36:54,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:36:54,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 22:36:54,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:36:54,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:36:54,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:36:54,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:36:54,982 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:36:54,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:36:54,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:36:54,983 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:36:54,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:36:54,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:36:54,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:36:54,984 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 22:36:54,985 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 22:36:54,985 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 22:36:54,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:36:54,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 22:36:54,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:36:54,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:36:54,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:36:54,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:36:54,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:36:54,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:36:54,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:36:54,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:36:54,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:36:54,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:36:54,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:36:54,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:36:54,992 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_61a9007c-5239-4473-b5fd-eb678e3667bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32d9f155778c5c4efaa55d37fdad329bb0d271b5 [2020-11-29 22:36:55,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:36:55,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:36:55,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:36:55,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:36:55,386 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:36:55,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2020-11-29 22:36:55,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/data/262524976/36a81256c07c4905aaa8db894e059b87/FLAG76ed8cbb3 [2020-11-29 22:36:55,927 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:36:55,928 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2020-11-29 22:36:55,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/data/262524976/36a81256c07c4905aaa8db894e059b87/FLAG76ed8cbb3 [2020-11-29 22:36:56,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/data/262524976/36a81256c07c4905aaa8db894e059b87 [2020-11-29 22:36:56,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:36:56,294 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 22:36:56,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:36:56,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:36:56,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:36:56,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369efc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56, skipping insertion in model container [2020-11-29 22:36:56,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:36:56,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:36:56,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:36:56,460 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:36:56,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:36:56,489 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:36:56,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56 WrapperNode [2020-11-29 22:36:56,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:36:56,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:36:56,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:36:56,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:36:56,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (1/1) ... [2020-11-29 22:36:56,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:36:56,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:36:56,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:36:56,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:36:56,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:36:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 22:36:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:36:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-29 22:36:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 22:36:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-29 22:36:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:36:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 22:36:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:36:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:36:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:36:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 22:36:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:36:56,974 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:36:56,974 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-29 22:36:56,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:36:56 BoogieIcfgContainer [2020-11-29 22:36:56,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:36:56,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:36:56,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:36:56,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:36:56,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:36:56" (1/3) ... [2020-11-29 22:36:56,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22304756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:36:56, skipping insertion in model container [2020-11-29 22:36:56,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:36:56" (2/3) ... [2020-11-29 22:36:56,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22304756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:36:56, skipping insertion in model container [2020-11-29 22:36:56,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:36:56" (3/3) ... [2020-11-29 22:36:57,000 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5.c [2020-11-29 22:36:57,029 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:36:57,040 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 22:36:57,055 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 22:36:57,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:36:57,076 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 22:36:57,076 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:36:57,076 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:36:57,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:36:57,077 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:36:57,077 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:36:57,077 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:36:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-29 22:36:57,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:36:57,098 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:36:57,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:36:57,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:36:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:36:57,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-11-29 22:36:57,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:36:57,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325602821] [2020-11-29 22:36:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:36:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:36:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:57,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325602821] [2020-11-29 22:36:57,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:36:57,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:36:57,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097508637] [2020-11-29 22:36:57,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:36:57,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:36:57,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:36:57,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:36:57,330 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-11-29 22:36:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:36:57,569 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-11-29 22:36:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:36:57,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 22:36:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:36:57,588 INFO L225 Difference]: With dead ends: 58 [2020-11-29 22:36:57,589 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 22:36:57,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:36:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 22:36:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-11-29 22:36:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 22:36:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-29 22:36:57,649 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-11-29 22:36:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:36:57,650 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-29 22:36:57,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:36:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-29 22:36:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:36:57,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:36:57,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:36:57,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:36:57,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:36:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:36:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-11-29 22:36:57,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:36:57,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825682490] [2020-11-29 22:36:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:36:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:36:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:57,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825682490] [2020-11-29 22:36:57,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:36:57,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:36:57,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098269824] [2020-11-29 22:36:57,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:36:57,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:36:57,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:36:57,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:36:57,809 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-11-29 22:36:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:36:58,044 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-11-29 22:36:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:36:58,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 22:36:58,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:36:58,047 INFO L225 Difference]: With dead ends: 59 [2020-11-29 22:36:58,047 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 22:36:58,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:36:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 22:36:58,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2020-11-29 22:36:58,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 22:36:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-29 22:36:58,057 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2020-11-29 22:36:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:36:58,058 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-29 22:36:58,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:36:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-29 22:36:58,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:36:58,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:36:58,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:36:58,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:36:58,061 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:36:58,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:36:58,067 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2020-11-29 22:36:58,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:36:58,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939731614] [2020-11-29 22:36:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:36:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:36:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:36:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:58,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939731614] [2020-11-29 22:36:58,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:36:58,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:36:58,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106854392] [2020-11-29 22:36:58,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:36:58,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:36:58,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:36:58,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:36:58,196 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2020-11-29 22:36:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:36:58,303 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-11-29 22:36:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:36:58,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 22:36:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:36:58,306 INFO L225 Difference]: With dead ends: 43 [2020-11-29 22:36:58,306 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 22:36:58,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:36:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 22:36:58,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-29 22:36:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 22:36:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-11-29 22:36:58,319 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2020-11-29 22:36:58,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:36:58,319 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-11-29 22:36:58,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:36:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-11-29 22:36:58,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:36:58,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:36:58,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:36:58,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:36:58,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:36:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:36:58,323 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2020-11-29 22:36:58,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:36:58,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364319141] [2020-11-29 22:36:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:36:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:36:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:36:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:58,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364319141] [2020-11-29 22:36:58,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:36:58,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:36:58,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86050634] [2020-11-29 22:36:58,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:36:58,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:36:58,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:36:58,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:36:58,457 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-11-29 22:36:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:36:58,564 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-11-29 22:36:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:36:58,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 22:36:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:36:58,566 INFO L225 Difference]: With dead ends: 47 [2020-11-29 22:36:58,566 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 22:36:58,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:36:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 22:36:58,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-29 22:36:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 22:36:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-29 22:36:58,578 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2020-11-29 22:36:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:36:58,578 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-29 22:36:58,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:36:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-29 22:36:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:36:58,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:36:58,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:36:58,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:36:58,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:36:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:36:58,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2020-11-29 22:36:58,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:36:58,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201688203] [2020-11-29 22:36:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:36:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:36:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:36:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:58,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201688203] [2020-11-29 22:36:58,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903706201] [2020-11-29 22:36:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:36:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:58,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:36:58,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:36:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:58,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:36:58,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-11-29 22:36:58,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116952454] [2020-11-29 22:36:58,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:36:58,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:36:58,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:36:58,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:36:58,850 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2020-11-29 22:36:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:36:59,057 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-11-29 22:36:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:36:59,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-29 22:36:59,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:36:59,059 INFO L225 Difference]: With dead ends: 69 [2020-11-29 22:36:59,059 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 22:36:59,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:36:59,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 22:36:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-11-29 22:36:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 22:36:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-29 22:36:59,074 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2020-11-29 22:36:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:36:59,075 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-29 22:36:59,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:36:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-29 22:36:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:36:59,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:36:59,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:36:59,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:36:59,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:36:59,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:36:59,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2020-11-29 22:36:59,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:36:59,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50505966] [2020-11-29 22:36:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:36:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:36:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:59,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:36:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 22:36:59,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50505966] [2020-11-29 22:36:59,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:36:59,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:36:59,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915656912] [2020-11-29 22:36:59,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:36:59,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:36:59,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:36:59,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:36:59,385 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 4 states. [2020-11-29 22:36:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:36:59,517 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-11-29 22:36:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:36:59,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 22:36:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:36:59,518 INFO L225 Difference]: With dead ends: 62 [2020-11-29 22:36:59,519 INFO L226 Difference]: Without dead ends: 62 [2020-11-29 22:36:59,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:36:59,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-29 22:36:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-11-29 22:36:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 22:36:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-11-29 22:36:59,525 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2020-11-29 22:36:59,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:36:59,525 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-11-29 22:36:59,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:36:59,525 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-11-29 22:36:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:36:59,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:36:59,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:36:59,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:36:59,532 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:36:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:36:59,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2020-11-29 22:36:59,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:36:59,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793978071] [2020-11-29 22:36:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:36:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:36:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:36:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:36:59,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793978071] [2020-11-29 22:36:59,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412924194] [2020-11-29 22:36:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:36:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:59,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:36:59,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:36:59,738 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-29 22:36:59,738 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-11-29 22:36:59,739 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:36:59,744 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:36:59,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:36:59,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-11-29 22:36:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:36:59,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:36:59,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 22:36:59,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473052275] [2020-11-29 22:36:59,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:36:59,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:36:59,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:36:59,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:36:59,822 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 8 states. [2020-11-29 22:36:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:36:59,991 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-11-29 22:36:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:36:59,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-29 22:36:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:36:59,993 INFO L225 Difference]: With dead ends: 53 [2020-11-29 22:36:59,993 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 22:36:59,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:36:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 22:36:59,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-29 22:36:59,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 22:36:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-11-29 22:36:59,999 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2020-11-29 22:36:59,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:00,000 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-11-29 22:37:00,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:37:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-11-29 22:37:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:37:00,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:00,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:00,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:00,207 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:00,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:00,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2020-11-29 22:37:00,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:00,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206704522] [2020-11-29 22:37:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:00,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:37:00,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206704522] [2020-11-29 22:37:00,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496157188] [2020-11-29 22:37:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:00,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 22:37:00,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:00,439 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:00,440 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-29 22:37:00,440 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:00,468 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-11-29 22:37:00,470 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:37:00,470 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-11-29 22:37:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:37:00,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:00,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 22:37:00,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894996545] [2020-11-29 22:37:00,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:37:00,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:00,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:37:00,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:37:00,524 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2020-11-29 22:37:00,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:00,764 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-11-29 22:37:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:37:00,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-29 22:37:00,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:00,766 INFO L225 Difference]: With dead ends: 59 [2020-11-29 22:37:00,766 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 22:37:00,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:37:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 22:37:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-11-29 22:37:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 22:37:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-11-29 22:37:00,779 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 23 [2020-11-29 22:37:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:00,781 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-11-29 22:37:00,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:37:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-11-29 22:37:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:37:00,783 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:00,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:01,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:01,003 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:01,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:01,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2020-11-29 22:37:01,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:01,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708028279] [2020-11-29 22:37:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:37:01,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708028279] [2020-11-29 22:37:01,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297410808] [2020-11-29 22:37:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:37:01,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:37:01,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:37:01,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2020-11-29 22:37:01,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697151568] [2020-11-29 22:37:01,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:37:01,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:01,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:37:01,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:37:01,249 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 6 states. [2020-11-29 22:37:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:01,382 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-11-29 22:37:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:37:01,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-29 22:37:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:01,384 INFO L225 Difference]: With dead ends: 63 [2020-11-29 22:37:01,384 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 22:37:01,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:37:01,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 22:37:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-11-29 22:37:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 22:37:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-29 22:37:01,392 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 26 [2020-11-29 22:37:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:01,393 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-29 22:37:01,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:37:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-29 22:37:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 22:37:01,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:01,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:01,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:01,615 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:01,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2020-11-29 22:37:01,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:01,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345139097] [2020-11-29 22:37:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:37:01,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345139097] [2020-11-29 22:37:01,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146963039] [2020-11-29 22:37:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:01,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:37:01,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:37:01,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:01,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-29 22:37:01,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365069142] [2020-11-29 22:37:01,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:37:01,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:01,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:37:01,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:37:01,935 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 11 states. [2020-11-29 22:37:02,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:02,345 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-11-29 22:37:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:37:02,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-11-29 22:37:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:02,346 INFO L225 Difference]: With dead ends: 81 [2020-11-29 22:37:02,346 INFO L226 Difference]: Without dead ends: 81 [2020-11-29 22:37:02,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:37:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-29 22:37:02,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2020-11-29 22:37:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 22:37:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-11-29 22:37:02,356 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 27 [2020-11-29 22:37:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:02,357 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-11-29 22:37:02,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:37:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-11-29 22:37:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:37:02,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:02,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:02,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 22:37:02,575 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash -790766996, now seen corresponding path program 1 times [2020-11-29 22:37:02,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:02,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134859937] [2020-11-29 22:37:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:02,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:02,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 22:37:02,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134859937] [2020-11-29 22:37:02,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117736185] [2020-11-29 22:37:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:02,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 22:37:02,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:02,809 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2020-11-29 22:37:02,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:37:02,833 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-11-29 22:37:02,834 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:02,875 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:02,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:37:02,883 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-11-29 22:37:02,884 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:02,894 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:02,895 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:37:02,895 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2020-11-29 22:37:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 22:37:03,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:03,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 9 [2020-11-29 22:37:03,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424054119] [2020-11-29 22:37:03,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:37:03,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:03,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:37:03,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:37:03,164 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2020-11-29 22:37:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:03,444 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-11-29 22:37:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:37:03,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-11-29 22:37:03,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:03,445 INFO L225 Difference]: With dead ends: 69 [2020-11-29 22:37:03,445 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 22:37:03,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:37:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 22:37:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-11-29 22:37:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 22:37:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-11-29 22:37:03,451 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 31 [2020-11-29 22:37:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:03,451 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-11-29 22:37:03,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:37:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-11-29 22:37:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 22:37:03,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:03,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:03,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:03,653 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:03,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:03,654 INFO L82 PathProgramCache]: Analyzing trace with hash 894123677, now seen corresponding path program 1 times [2020-11-29 22:37:03,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:03,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902328383] [2020-11-29 22:37:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:03,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-29 22:37:03,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902328383] [2020-11-29 22:37:03,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240216181] [2020-11-29 22:37:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:03,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:37:03,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 22:37:03,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:03,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-29 22:37:03,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345394452] [2020-11-29 22:37:03,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:37:03,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:03,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:37:03,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:37:03,907 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 9 states. [2020-11-29 22:37:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:04,133 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-11-29 22:37:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:37:04,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-11-29 22:37:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:04,135 INFO L225 Difference]: With dead ends: 94 [2020-11-29 22:37:04,135 INFO L226 Difference]: Without dead ends: 94 [2020-11-29 22:37:04,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:37:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-29 22:37:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 74. [2020-11-29 22:37:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 22:37:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-11-29 22:37:04,151 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 37 [2020-11-29 22:37:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:04,151 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-11-29 22:37:04,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:37:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-11-29 22:37:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 22:37:04,153 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:04,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:04,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:04,367 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:04,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:04,367 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 2 times [2020-11-29 22:37:04,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:04,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80180070] [2020-11-29 22:37:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:04,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:04,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-29 22:37:04,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80180070] [2020-11-29 22:37:04,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841251979] [2020-11-29 22:37:04,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:04,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:37:04,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:37:04,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:37:04,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 22:37:04,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:04,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 10 [2020-11-29 22:37:04,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530112479] [2020-11-29 22:37:04,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:37:04,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:37:04,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:37:04,704 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 11 states. [2020-11-29 22:37:05,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:05,153 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-11-29 22:37:05,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:37:05,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-11-29 22:37:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:05,155 INFO L225 Difference]: With dead ends: 124 [2020-11-29 22:37:05,155 INFO L226 Difference]: Without dead ends: 124 [2020-11-29 22:37:05,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:37:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-29 22:37:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 91. [2020-11-29 22:37:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-29 22:37:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-11-29 22:37:05,162 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 43 [2020-11-29 22:37:05,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:05,162 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-11-29 22:37:05,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:37:05,163 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-11-29 22:37:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 22:37:05,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:05,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:05,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 22:37:05,398 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:05,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:05,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1104126516, now seen corresponding path program 1 times [2020-11-29 22:37:05,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:05,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990062274] [2020-11-29 22:37:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 22:37:05,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990062274] [2020-11-29 22:37:05,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178727240] [2020-11-29 22:37:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:05,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-29 22:37:05,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:05,725 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:05,725 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-29 22:37:05,726 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:05,751 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-11-29 22:37:05,752 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:37:05,752 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-11-29 22:37:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 22:37:05,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:05,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2020-11-29 22:37:05,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111760248] [2020-11-29 22:37:05,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:37:05,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:05,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:37:05,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:37:05,890 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 12 states. [2020-11-29 22:37:06,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:06,235 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-11-29 22:37:06,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:37:06,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-11-29 22:37:06,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:06,237 INFO L225 Difference]: With dead ends: 116 [2020-11-29 22:37:06,237 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 22:37:06,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:37:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 22:37:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93. [2020-11-29 22:37:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 22:37:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-11-29 22:37:06,244 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 44 [2020-11-29 22:37:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:06,244 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-11-29 22:37:06,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:37:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-11-29 22:37:06,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-29 22:37:06,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:06,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:06,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:06,479 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:06,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2073773289, now seen corresponding path program 2 times [2020-11-29 22:37:06,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:06,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466047863] [2020-11-29 22:37:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:06,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:06,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:37:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 22:37:06,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466047863] [2020-11-29 22:37:06,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134872748] [2020-11-29 22:37:06,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:06,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:37:06,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:37:06,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:37:06,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 22:37:06,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:06,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2020-11-29 22:37:06,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875632954] [2020-11-29 22:37:06,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:37:06,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:06,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:37:06,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:37:06,731 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 12 states. [2020-11-29 22:37:07,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:07,159 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-11-29 22:37:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:37:07,159 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-11-29 22:37:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:07,160 INFO L225 Difference]: With dead ends: 115 [2020-11-29 22:37:07,161 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 22:37:07,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:37:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 22:37:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-11-29 22:37:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-29 22:37:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-11-29 22:37:07,166 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 47 [2020-11-29 22:37:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:07,166 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-11-29 22:37:07,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:37:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-11-29 22:37:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-29 22:37:07,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:07,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:07,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 22:37:07,377 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:07,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1381084076, now seen corresponding path program 3 times [2020-11-29 22:37:07,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:07,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522984178] [2020-11-29 22:37:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:37:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-29 22:37:07,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522984178] [2020-11-29 22:37:07,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064051219] [2020-11-29 22:37:07,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:07,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 22:37:07,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:37:07,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:37:07,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:07,637 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_26|]} [2020-11-29 22:37:07,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:37:07,643 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-11-29 22:37:07,643 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:07,656 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:07,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:37:07,663 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-11-29 22:37:07,664 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:07,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:07,676 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:37:07,676 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2020-11-29 22:37:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-29 22:37:07,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:07,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2020-11-29 22:37:07,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876228132] [2020-11-29 22:37:07,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:37:07,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:07,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:37:07,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:37:07,985 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 12 states. [2020-11-29 22:37:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:08,825 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-11-29 22:37:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 22:37:08,826 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-11-29 22:37:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:08,827 INFO L225 Difference]: With dead ends: 116 [2020-11-29 22:37:08,828 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 22:37:08,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2020-11-29 22:37:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 22:37:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2020-11-29 22:37:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-29 22:37:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-11-29 22:37:08,833 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 52 [2020-11-29 22:37:08,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:08,834 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-11-29 22:37:08,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:37:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-11-29 22:37:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-29 22:37:08,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:08,835 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:09,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 22:37:09,036 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1868655978, now seen corresponding path program 3 times [2020-11-29 22:37:09,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:09,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895775456] [2020-11-29 22:37:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:09,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:37:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 35 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-29 22:37:09,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895775456] [2020-11-29 22:37:09,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505330152] [2020-11-29 22:37:09,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:09,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 22:37:09,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:37:09,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:37:09,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-11-29 22:37:09,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:09,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2020-11-29 22:37:09,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083729935] [2020-11-29 22:37:09,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 22:37:09,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:09,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 22:37:09,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:37:09,430 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 18 states. [2020-11-29 22:37:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:10,058 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2020-11-29 22:37:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 22:37:10,058 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2020-11-29 22:37:10,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:10,059 INFO L225 Difference]: With dead ends: 154 [2020-11-29 22:37:10,059 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 22:37:10,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2020-11-29 22:37:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 22:37:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2020-11-29 22:37:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 22:37:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2020-11-29 22:37:10,064 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 74 [2020-11-29 22:37:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:10,071 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2020-11-29 22:37:10,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 22:37:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2020-11-29 22:37:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 22:37:10,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:10,072 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:10,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 22:37:10,283 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:10,283 INFO L82 PathProgramCache]: Analyzing trace with hash 241209475, now seen corresponding path program 1 times [2020-11-29 22:37:10,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:10,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161469264] [2020-11-29 22:37:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:10,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:37:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-29 22:37:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-11-29 22:37:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 97 proven. 49 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-11-29 22:37:10,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161469264] [2020-11-29 22:37:10,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119425161] [2020-11-29 22:37:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:10,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:37:10,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 194 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-11-29 22:37:10,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:10,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-11-29 22:37:10,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920664679] [2020-11-29 22:37:10,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 22:37:10,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:10,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 22:37:10,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:37:10,708 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 15 states. [2020-11-29 22:37:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:11,084 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-11-29 22:37:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 22:37:11,085 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2020-11-29 22:37:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:11,085 INFO L225 Difference]: With dead ends: 161 [2020-11-29 22:37:11,086 INFO L226 Difference]: Without dead ends: 155 [2020-11-29 22:37:11,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-11-29 22:37:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-29 22:37:11,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 139. [2020-11-29 22:37:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-29 22:37:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2020-11-29 22:37:11,092 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 103 [2020-11-29 22:37:11,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:11,092 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2020-11-29 22:37:11,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 22:37:11,092 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2020-11-29 22:37:11,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-29 22:37:11,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:11,094 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:11,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 22:37:11,309 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:11,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:11,310 INFO L82 PathProgramCache]: Analyzing trace with hash -311092151, now seen corresponding path program 2 times [2020-11-29 22:37:11,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:11,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174797375] [2020-11-29 22:37:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:11,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:37:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:11,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-29 22:37:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:11,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-29 22:37:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-11-29 22:37:11,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174797375] [2020-11-29 22:37:11,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807118553] [2020-11-29 22:37:11,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:11,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 22:37:11,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:37:11,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:37:11,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:11,564 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 22:37:11,565 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2020-11-29 22:37:11,566 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:11,574 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:11,577 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 22:37:11,577 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-11-29 22:37:11,716 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 22:37:11,716 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2020-11-29 22:37:11,718 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:11,726 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:11,727 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 22:37:11,728 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-11-29 22:37:11,842 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 22:37:11,842 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2020-11-29 22:37:11,843 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:11,850 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:11,851 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 22:37:11,852 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-11-29 22:37:12,001 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 22:37:12,002 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2020-11-29 22:37:12,003 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:12,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:12,011 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 22:37:12,011 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-11-29 22:37:12,173 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 22:37:12,173 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2020-11-29 22:37:12,175 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:12,182 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:12,183 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 22:37:12,183 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-11-29 22:37:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2020-11-29 22:37:12,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:37:12,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2020-11-29 22:37:12,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121047916] [2020-11-29 22:37:12,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:37:12,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:12,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:37:12,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:37:12,396 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 6 states. [2020-11-29 22:37:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:12,485 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2020-11-29 22:37:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:37:12,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-11-29 22:37:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:12,487 INFO L225 Difference]: With dead ends: 138 [2020-11-29 22:37:12,487 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 22:37:12,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 112 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:37:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 22:37:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2020-11-29 22:37:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-29 22:37:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2020-11-29 22:37:12,493 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 113 [2020-11-29 22:37:12,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:12,493 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2020-11-29 22:37:12,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:37:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2020-11-29 22:37:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-29 22:37:12,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:12,495 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:12,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:12,696 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:12,696 INFO L82 PathProgramCache]: Analyzing trace with hash 419498507, now seen corresponding path program 1 times [2020-11-29 22:37:12,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:12,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851885563] [2020-11-29 22:37:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:12,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:12,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:37:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:12,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-29 22:37:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-29 22:37:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2020-11-29 22:37:12,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851885563] [2020-11-29 22:37:12,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371508252] [2020-11-29 22:37:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:12,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:37:12,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 189 proven. 18 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-11-29 22:37:13,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:13,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2020-11-29 22:37:13,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647740932] [2020-11-29 22:37:13,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 22:37:13,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:13,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 22:37:13,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-11-29 22:37:13,211 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand 19 states. [2020-11-29 22:37:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:14,020 INFO L93 Difference]: Finished difference Result 170 states and 175 transitions. [2020-11-29 22:37:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 22:37:14,021 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 126 [2020-11-29 22:37:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:14,022 INFO L225 Difference]: With dead ends: 170 [2020-11-29 22:37:14,022 INFO L226 Difference]: Without dead ends: 167 [2020-11-29 22:37:14,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 22:37:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-29 22:37:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 143. [2020-11-29 22:37:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 22:37:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2020-11-29 22:37:14,028 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 126 [2020-11-29 22:37:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:14,029 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2020-11-29 22:37:14,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 22:37:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2020-11-29 22:37:14,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-29 22:37:14,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:14,032 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:14,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:14,255 INFO L429 AbstractCegarLoop]: === Iteration 21 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:14,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1289574162, now seen corresponding path program 2 times [2020-11-29 22:37:14,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:14,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621725408] [2020-11-29 22:37:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:37:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-29 22:37:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-29 22:37:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-11-29 22:37:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2020-11-29 22:37:14,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621725408] [2020-11-29 22:37:14,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186803599] [2020-11-29 22:37:14,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:14,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:37:14,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:37:14,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 22:37:14,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 346 proven. 34 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-11-29 22:37:14,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:37:14,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 22 [2020-11-29 22:37:14,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963433902] [2020-11-29 22:37:14,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 22:37:14,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:14,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 22:37:14,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-11-29 22:37:14,847 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand 22 states. [2020-11-29 22:37:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:15,790 INFO L93 Difference]: Finished difference Result 220 states and 228 transitions. [2020-11-29 22:37:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 22:37:15,790 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 162 [2020-11-29 22:37:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:15,792 INFO L225 Difference]: With dead ends: 220 [2020-11-29 22:37:15,792 INFO L226 Difference]: Without dead ends: 220 [2020-11-29 22:37:15,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 22:37:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-29 22:37:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 179. [2020-11-29 22:37:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-29 22:37:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 185 transitions. [2020-11-29 22:37:15,799 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 185 transitions. Word has length 162 [2020-11-29 22:37:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:15,799 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 185 transitions. [2020-11-29 22:37:15,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 22:37:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 185 transitions. [2020-11-29 22:37:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-11-29 22:37:15,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:37:15,802 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:37:16,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:16,023 INFO L429 AbstractCegarLoop]: === Iteration 22 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 22:37:16,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:37:16,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1415289466, now seen corresponding path program 3 times [2020-11-29 22:37:16,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:37:16,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100387439] [2020-11-29 22:37:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:37:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:37:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-29 22:37:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 22:37:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-29 22:37:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-29 22:37:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-29 22:37:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-11-29 22:37:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-11-29 22:37:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:37:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2020-11-29 22:37:16,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100387439] [2020-11-29 22:37:16,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844919656] [2020-11-29 22:37:16,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:37:16,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 22:37:16,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:37:16,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:37:16,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:37:16,347 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_16|], 1=[|v_#valid_29|]} [2020-11-29 22:37:16,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:37:16,354 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-11-29 22:37:16,354 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:16,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:16,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:37:16,377 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-11-29 22:37:16,378 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:37:16,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:37:16,387 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:37:16,387 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-11-29 22:37:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2020-11-29 22:37:17,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:37:17,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2020-11-29 22:37:17,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120087446] [2020-11-29 22:37:17,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:37:17,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:37:17,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:37:17,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:37:17,149 INFO L87 Difference]: Start difference. First operand 179 states and 185 transitions. Second operand 7 states. [2020-11-29 22:37:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:37:17,237 INFO L93 Difference]: Finished difference Result 178 states and 184 transitions. [2020-11-29 22:37:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:37:17,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-11-29 22:37:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:37:17,241 INFO L225 Difference]: With dead ends: 178 [2020-11-29 22:37:17,241 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:37:17,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 201 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:37:17,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:37:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:37:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:37:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:37:17,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 203 [2020-11-29 22:37:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:37:17,242 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:37:17,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:37:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:37:17,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:37:17,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 22:37:17,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:37:17 BoogieIcfgContainer [2020-11-29 22:37:17,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:37:17,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:37:17,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:37:17,447 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:37:17,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:36:56" (3/4) ... [2020-11-29 22:37:17,450 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:37:17,455 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 22:37:17,455 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-11-29 22:37:17,456 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 22:37:17,460 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-29 22:37:17,460 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-29 22:37:17,460 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-29 22:37:17,461 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:37:17,502 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_61a9007c-5239-4473-b5fd-eb678e3667bc/bin/uautomizer/witness.graphml [2020-11-29 22:37:17,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:37:17,504 INFO L168 Benchmark]: Toolchain (without parser) took 21209.20 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 48.7 MB in the beginning and 112.1 MB in the end (delta: -63.4 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:37:17,504 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 65.6 MB in the beginning and 65.5 MB in the end (delta: 74.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:37:17,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.66 ms. Allocated memory is still 88.1 MB. Free memory was 48.5 MB in the beginning and 39.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:37:17,506 INFO L168 Benchmark]: Boogie Preprocessor took 33.54 ms. Allocated memory is still 88.1 MB. Free memory was 39.6 MB in the beginning and 38.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:37:17,507 INFO L168 Benchmark]: RCFGBuilder took 450.62 ms. Allocated memory is still 88.1 MB. Free memory was 38.0 MB in the beginning and 53.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:37:17,507 INFO L168 Benchmark]: TraceAbstraction took 20468.39 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 53.1 MB in the beginning and 114.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:37:17,508 INFO L168 Benchmark]: Witness Printer took 55.90 ms. Allocated memory is still 188.7 MB. Free memory was 114.9 MB in the beginning and 112.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:37:17,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 65.6 MB in the beginning and 65.5 MB in the end (delta: 74.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 194.66 ms. Allocated memory is still 88.1 MB. Free memory was 48.5 MB in the beginning and 39.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.54 ms. Allocated memory is still 88.1 MB. Free memory was 39.6 MB in the beginning and 38.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 450.62 ms. Allocated memory is still 88.1 MB. Free memory was 38.0 MB in the beginning and 53.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20468.39 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 53.1 MB in the beginning and 114.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. * Witness Printer took 55.90 ms. Allocated memory is still 188.7 MB. Free memory was 114.9 MB in the beginning and 112.1 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: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.3s, OverallIterations: 22, TraceHistogramMax: 20, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 524 SDtfs, 1946 SDslu, 1229 SDs, 0 SdLazy, 4271 SolverSat, 461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1529 GetRequests, 1202 SyntacticMatches, 35 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 285 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 2383 NumberOfCodeBlocks, 2037 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 2344 ConstructedInterpolants, 342 QuantifiedInterpolants, 1217238 SizeOfPredicates, 50 NumberOfNonLiveVariables, 2879 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 39 InterpolantComputations, 8 PerfectInterpolantSequences, 6271/6862 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...