./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/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 cf7af2f20e563d03f4a81a8dac054ded849cb34c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 11:19:53,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:19:53,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:19:53,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:19:53,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:19:53,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:19:53,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:19:53,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:19:53,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:19:53,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:19:53,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:19:53,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:19:53,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:19:53,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:19:53,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:19:53,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:19:53,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:19:53,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:19:53,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:19:53,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:19:53,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:19:53,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:19:53,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:19:53,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:19:53,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:19:53,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:19:53,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:19:53,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:19:53,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:19:53,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:19:53,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:19:53,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:19:53,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:19:53,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:19:53,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:19:53,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:19:53,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:19:53,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:19:53,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:19:53,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:19:53,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:19:53,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 11:19:53,617 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:19:53,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:19:53,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:19:53,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:19:53,624 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:19:53,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:19:53,625 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:19:53,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 11:19:53,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:19:53,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:19:53,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:19:53,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 11:19:53,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 11:19:53,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 11:19:53,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:19:53,628 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 11:19:53,628 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 11:19:53,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:19:53,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:19:53,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:19:53,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:19:53,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:19:53,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:19:53,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:19:53,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:19:53,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:19:53,630 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 11:19:53,630 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 11:19:53,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 11:19:53,631 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_1dc6f588-441c-4838-a915-3573b34d35df/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 -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2019-11-20 11:19:53,853 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:19:53,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:19:53,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:19:53,869 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:19:53,870 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:19:53,870 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2019-11-20 11:19:53,941 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/data/157ed3845/0d8ca802f86e4ebbbdfcbc0d138905ab/FLAG10da87295 [2019-11-20 11:19:54,501 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:19:54,502 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2019-11-20 11:19:54,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/data/157ed3845/0d8ca802f86e4ebbbdfcbc0d138905ab/FLAG10da87295 [2019-11-20 11:19:54,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/data/157ed3845/0d8ca802f86e4ebbbdfcbc0d138905ab [2019-11-20 11:19:54,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:19:54,760 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 11:19:54,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:19:54,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:19:54,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:19:54,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:19:54" (1/1) ... [2019-11-20 11:19:54,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f97bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:54, skipping insertion in model container [2019-11-20 11:19:54,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:19:54" (1/1) ... [2019-11-20 11:19:54,777 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:19:54,816 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:19:55,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:19:55,217 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:19:55,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:19:55,316 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:19:55,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55 WrapperNode [2019-11-20 11:19:55,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:19:55,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:19:55,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:19:55,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:19:55,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (1/1) ... [2019-11-20 11:19:55,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (1/1) ... [2019-11-20 11:19:55,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (1/1) ... [2019-11-20 11:19:55,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (1/1) ... [2019-11-20 11:19:55,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (1/1) ... [2019-11-20 11:19:55,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (1/1) ... [2019-11-20 11:19:55,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (1/1) ... [2019-11-20 11:19:55,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:19:55,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:19:55,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:19:55,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:19:55,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:19:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 11:19:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:19:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 11:19:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 11:19:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 11:19:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2019-11-20 11:19:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 11:19:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 11:19:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 11:19:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 11:19:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 11:19:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 11:19:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 11:19:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 11:19:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 11:19:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 11:19:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 11:19:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 11:19:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 11:19:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 11:19:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 11:19:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 11:19:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 11:19:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 11:19:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 11:19:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 11:19:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 11:19:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 11:19:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 11:19:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 11:19:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 11:19:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 11:19:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 11:19:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 11:19:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 11:19:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 11:19:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 11:19:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 11:19:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 11:19:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 11:19:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 11:19:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 11:19:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 11:19:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 11:19:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 11:19:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 11:19:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 11:19:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 11:19:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 11:19:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 11:19:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 11:19:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 11:19:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 11:19:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 11:19:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 11:19:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 11:19:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 11:19:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 11:19:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 11:19:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 11:19:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 11:19:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 11:19:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 11:19:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 11:19:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 11:19:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 11:19:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 11:19:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 11:19:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 11:19:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 11:19:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 11:19:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 11:19:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 11:19:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 11:19:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 11:19:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 11:19:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 11:19:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 11:19:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 11:19:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 11:19:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 11:19:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 11:19:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 11:19:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 11:19:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 11:19:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 11:19:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 11:19:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 11:19:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 11:19:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 11:19:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 11:19:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 11:19:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 11:19:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 11:19:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 11:19:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 11:19:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 11:19:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 11:19:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 11:19:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 11:19:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 11:19:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 11:19:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 11:19:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 11:19:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 11:19:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 11:19:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 11:19:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 11:19:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 11:19:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 11:19:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 11:19:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 11:19:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 11:19:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2019-11-20 11:19:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 11:19:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 11:19:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 11:19:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 11:19:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 11:19:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 11:19:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:19:55,911 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 11:19:56,094 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:19:56,094 INFO L285 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-20 11:19:56,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:56 BoogieIcfgContainer [2019-11-20 11:19:56,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:19:56,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:19:56,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:19:56,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:19:56,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:19:54" (1/3) ... [2019-11-20 11:19:56,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2819cfa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:56, skipping insertion in model container [2019-11-20 11:19:56,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:55" (2/3) ... [2019-11-20 11:19:56,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2819cfa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:56, skipping insertion in model container [2019-11-20 11:19:56,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:56" (3/3) ... [2019-11-20 11:19:56,103 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2019-11-20 11:19:56,112 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:19:56,119 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-11-20 11:19:56,131 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-11-20 11:19:56,153 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:19:56,153 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 11:19:56,154 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:19:56,154 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:19:56,154 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:19:56,154 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:19:56,155 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:19:56,155 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:19:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-20 11:19:56,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 11:19:56,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:19:56,184 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:19:56,184 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:19:56,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:19:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1296135611, now seen corresponding path program 1 times [2019-11-20 11:19:56,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:19:56,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [169292809] [2019-11-20 11:19:56,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:19:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:19:56,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 11:19:56,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:19:56,536 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:19:56,537 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:19:56,545 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:19:56,546 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:19:56,546 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:19:56,702 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:19:56,703 INFO L377 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 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-20 11:19:56,707 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:19:56,752 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 11:19:56,753 INFO L496 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. [2019-11-20 11:19:56,753 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2019-11-20 11:19:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:19:56,814 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:20:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:20:01,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [169292809] [2019-11-20 11:20:01,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:20:01,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-20 11:20:01,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560197045] [2019-11-20 11:20:01,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 11:20:01,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:20:01,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 11:20:01,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=172, Unknown=1, NotChecked=0, Total=210 [2019-11-20 11:20:01,420 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 15 states. [2019-11-20 11:20:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:20:12,372 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-11-20 11:20:12,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 11:20:12,373 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2019-11-20 11:20:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:20:12,381 INFO L225 Difference]: With dead ends: 37 [2019-11-20 11:20:12,381 INFO L226 Difference]: Without dead ends: 31 [2019-11-20 11:20:12,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=75, Invalid=304, Unknown=1, NotChecked=0, Total=380 [2019-11-20 11:20:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-20 11:20:12,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-20 11:20:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 11:20:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-11-20 11:20:12,422 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2019-11-20 11:20:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:20:12,425 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-11-20 11:20:12,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 11:20:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-11-20 11:20:12,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 11:20:12,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:20:12,427 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:20:12,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:20:12,636 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:20:12,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:20:12,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1296135612, now seen corresponding path program 1 times [2019-11-20 11:20:12,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:20:12,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [880415769] [2019-11-20 11:20:12,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:20:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:20:12,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 11:20:12,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:20:12,889 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:20:12,890 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:20:12,901 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:20:12,907 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:20:12,907 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:20:12,918 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:20:12,918 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:20:12,918 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 11:20:13,112 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:20:13,112 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-20 11:20:13,114 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:20:13,127 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:20:13,135 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-20 11:20:13,136 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:20:13,147 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:20:13,148 INFO L496 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. [2019-11-20 11:20:13,148 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:18 [2019-11-20 11:20:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:20:13,191 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:20:13,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 11:20:13,526 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:20:13,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:20:13,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 11:20:13,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 11:20:13,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:20:13,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 11:20:13,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 11:20:15,373 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2019-11-20 11:20:15,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:20:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:20:16,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [880415769] [2019-11-20 11:20:16,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:20:16,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-20 11:20:16,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384814903] [2019-11-20 11:20:16,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 11:20:16,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:20:16,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 11:20:16,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-11-20 11:20:16,461 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2019-11-20 11:20:24,346 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-11-20 11:20:34,452 WARN L191 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 56 [2019-11-20 11:20:39,587 WARN L191 SmtUtils]: Spent 2.45 s on a formula simplification that was a NOOP. DAG size: 51 [2019-11-20 11:20:49,604 WARN L191 SmtUtils]: Spent 4.22 s on a formula simplification that was a NOOP. DAG size: 51 [2019-11-20 11:21:01,726 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-11-20 11:21:07,209 WARN L191 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-11-20 11:21:34,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:21:34,434 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-20 11:21:34,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 11:21:34,435 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2019-11-20 11:21:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:21:34,436 INFO L225 Difference]: With dead ends: 27 [2019-11-20 11:21:34,437 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 11:21:34,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=86, Invalid=371, Unknown=5, NotChecked=0, Total=462 [2019-11-20 11:21:34,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 11:21:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-20 11:21:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 11:21:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-20 11:21:34,444 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2019-11-20 11:21:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:21:34,445 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-20 11:21:34,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 11:21:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-20 11:21:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 11:21:34,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:21:34,447 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:21:34,656 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:34,656 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:21:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:21:34,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1419991331, now seen corresponding path program 1 times [2019-11-20 11:21:34,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:21:34,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [416487542] [2019-11-20 11:21:34,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:21:34,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 11:21:34,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:21:34,869 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:21:34,869 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:21:34,872 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:21:34,872 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:21:34,873 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:21:34,900 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 11:21:34,901 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:21:34,913 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:21:34,914 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:21:34,914 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:15 [2019-11-20 11:21:34,936 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 9 [2019-11-20 11:21:34,936 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:21:34,947 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:21:34,947 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 11:21:34,947 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:13 [2019-11-20 11:21:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:21:34,976 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:21:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:21:35,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [416487542] [2019-11-20 11:21:35,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:21:35,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-20 11:21:35,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216971032] [2019-11-20 11:21:35,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 11:21:35,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:21:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 11:21:35,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-20 11:21:35,152 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2019-11-20 11:21:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:21:35,446 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-20 11:21:35,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 11:21:35,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-11-20 11:21:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:21:35,449 INFO L225 Difference]: With dead ends: 26 [2019-11-20 11:21:35,449 INFO L226 Difference]: Without dead ends: 26 [2019-11-20 11:21:35,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-11-20 11:21:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-20 11:21:35,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-20 11:21:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 11:21:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-20 11:21:35,453 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2019-11-20 11:21:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:21:35,454 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-20 11:21:35,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 11:21:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-20 11:21:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 11:21:35,455 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:21:35,455 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:21:35,655 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:35,656 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:21:35,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:21:35,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1419991332, now seen corresponding path program 1 times [2019-11-20 11:21:35,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:21:35,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [120243122] [2019-11-20 11:21:35,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:21:35,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 11:21:35,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:21:35,841 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 11:21:35,842 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:21:35,847 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:21:35,847 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:21:35,847 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 11:21:35,877 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 11:21:35,878 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:21:35,893 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:21:35,897 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 11:21:35,898 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:21:35,907 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:21:35,908 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:21:35,908 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2019-11-20 11:21:35,942 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 9 [2019-11-20 11:21:35,943 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:21:35,960 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:21:35,965 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2019-11-20 11:21:35,966 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:21:35,977 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:21:35,977 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:21:35,977 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:11 [2019-11-20 11:21:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:21:35,996 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:21:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:21:36,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [120243122] [2019-11-20 11:21:36,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:21:36,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-20 11:21:36,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702425919] [2019-11-20 11:21:36,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 11:21:36,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:21:36,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 11:21:36,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-20 11:21:36,529 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2019-11-20 11:21:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:21:36,875 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-20 11:21:36,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 11:21:36,876 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2019-11-20 11:21:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:21:36,877 INFO L225 Difference]: With dead ends: 25 [2019-11-20 11:21:36,877 INFO L226 Difference]: Without dead ends: 25 [2019-11-20 11:21:36,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-20 11:21:36,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-20 11:21:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-20 11:21:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-20 11:21:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-20 11:21:36,882 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2019-11-20 11:21:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:21:36,883 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-20 11:21:36,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 11:21:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-20 11:21:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 11:21:36,884 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:21:36,884 INFO L410 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] [2019-11-20 11:21:37,085 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:37,085 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:21:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:21:37,086 INFO L82 PathProgramCache]: Analyzing trace with hash 859638790, now seen corresponding path program 1 times [2019-11-20 11:21:37,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:21:37,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1634626272] [2019-11-20 11:21:37,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:21:37,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 11:21:37,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:21:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:21:37,428 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:21:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:21:37,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1634626272] [2019-11-20 11:21:37,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:21:37,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2019-11-20 11:21:37,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355516753] [2019-11-20 11:21:37,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 11:21:37,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:21:37,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 11:21:37,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 11:21:37,534 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 11 states. [2019-11-20 11:21:37,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:21:37,697 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-20 11:21:37,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 11:21:37,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-20 11:21:37,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:21:37,699 INFO L225 Difference]: With dead ends: 24 [2019-11-20 11:21:37,699 INFO L226 Difference]: Without dead ends: 24 [2019-11-20 11:21:37,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-20 11:21:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-20 11:21:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-20 11:21:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 11:21:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-20 11:21:37,705 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 26 [2019-11-20 11:21:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:21:37,705 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-20 11:21:37,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 11:21:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-20 11:21:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 11:21:37,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:21:37,707 INFO L410 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, 1] [2019-11-20 11:21:37,910 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:37,910 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 11:21:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:21:37,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1479158633, now seen corresponding path program 1 times [2019-11-20 11:21:37,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:21:37,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2009727598] [2019-11-20 11:21:37,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dc6f588-441c-4838-a915-3573b34d35df/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:21:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:21:38,269 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 11:21:38,269 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:21:38,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:21:38,481 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-20 11:21:38,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:21:38 BoogieIcfgContainer [2019-11-20 11:21:38,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:21:38,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:21:38,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:21:38,498 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:21:38,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:56" (3/4) ... [2019-11-20 11:21:38,502 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 11:21:38,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:21:38,504 INFO L168 Benchmark]: Toolchain (without parser) took 103743.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 940.7 MB in the beginning and 872.7 MB in the end (delta: 68.0 MB). Peak memory consumption was 262.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:21:38,505 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:21:38,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:21:38,506 INFO L168 Benchmark]: Boogie Preprocessor took 54.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-20 11:21:38,507 INFO L168 Benchmark]: RCFGBuilder took 722.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2019-11-20 11:21:38,508 INFO L168 Benchmark]: TraceAbstraction took 102400.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.0 GB in the beginning and 872.7 MB in the end (delta: 173.5 MB). Peak memory consumption was 244.8 MB. Max. memory is 11.5 GB. [2019-11-20 11:21:38,508 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 1.2 GB. Free memory is still 872.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:21:38,519 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 556.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 722.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 102400.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.0 GB in the beginning and 872.7 MB in the end (delta: 173.5 MB). Peak memory consumption was 244.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.32 ms. Allocated memory is still 1.2 GB. Free memory is still 872.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={2147483646:0}, temp={2147483646:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={2147483646:0}, temp={2147483646:0}] [L566] return temp; VAL [\result={2147483646:0}, malloc(sizeof(struct node))={2147483646:0}, temp={2147483646:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={2147483646:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L566] return temp; VAL [\result={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={-2147483648:0}, s={2147483646:0}] [L570] s->next = alloc_node() VAL [alloc_node()={-2147483648:0}, s={2147483646:0}] [L571] EXPR s->next VAL [s={2147483646:0}, s->next={-2147483648:0}] [L571] *s = *(s->next) [L572] free(s) VAL [s={2147483646:0}] [L572] free(s) VAL [s={2147483646:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={2147483646:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 12 error locations. Result: UNSAFE, OverallTime: 102.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 89.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 151 SDslu, 340 SDs, 0 SdLazy, 581 SolverSat, 46 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 61.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 36.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 206 ConstructedInterpolants, 37 QuantifiedInterpolants, 33512 SizeOfPredicates, 38 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 26/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...