./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --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_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/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 0adf73b7dd596c46d6accaa4759d997d536c99cf .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/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 0adf73b7dd596c46d6accaa4759d997d536c99cf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:36,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:36,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:36,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:36,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:36,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:36,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:36,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:36,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:36,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:36,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:36,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:36,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:36,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:36,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:36,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:36,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:36,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:36,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:36,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:36,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:36,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:36,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:36,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:36,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:36,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:36,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:36,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:36,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:36,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:36,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:36,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:36,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:36,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:36,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:36,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:36,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:36,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:36,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:36,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:36,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:36,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:58:36,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:36,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:36,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:36,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:36,936 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:36,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:36,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:36,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:58:36,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:36,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:36,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:36,938 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:58:36,939 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:58:36,939 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:58:36,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:36,939 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:58:36,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:36,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:36,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:36,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:36,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:36,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:36,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:36,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:36,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:36,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:36,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:36,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:36,942 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_ad9666b5-e27e-40bb-826a-1d899e3e72e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2020-11-28 02:58:37,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:37,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:37,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:37,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:37,293 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:37,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-28 02:58:37,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data/560b82a21/3470c21363664ecfa4ef0919781e1a88/FLAG7cccfb7ff [2020-11-28 02:58:37,998 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:37,999 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-28 02:58:38,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data/560b82a21/3470c21363664ecfa4ef0919781e1a88/FLAG7cccfb7ff [2020-11-28 02:58:38,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data/560b82a21/3470c21363664ecfa4ef0919781e1a88 [2020-11-28 02:58:38,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:38,307 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:58:38,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:38,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:38,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:38,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66836524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38, skipping insertion in model container [2020-11-28 02:58:38,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:38,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:38,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:38,699 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:38,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:38,841 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:38,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38 WrapperNode [2020-11-28 02:58:38,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:38,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:38,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:38,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:38,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (1/1) ... [2020-11-28 02:58:38,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:38,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:38,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:38,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:38,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:58:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 02:58:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:58:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:58:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:58:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:58:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:58:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:58:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:58:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:58:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:58:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:58:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:58:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:58:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:58:39,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:58:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:58:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:58:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:58:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:58:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:58:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:58:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:58:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:58:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:58:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:58:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:58:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:58:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:58:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:58:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:58:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:58:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:58:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:58:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:58:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:58:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:58:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:58:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:58:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:58:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:58:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:58:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:58:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:58:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:58:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:58:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:58:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:58:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:58:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:58:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:58:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:58:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:58:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:58:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:58:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:58:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:58:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-28 02:58:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:58:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:58:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:58:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:58:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:58:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:58:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:58:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:58:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:58:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:58:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:58:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:58:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:58:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:58:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:58:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:58:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:58:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:58:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:58:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:58:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:58:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:58:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:58:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:58:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:58:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:58:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:58:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:58:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:58:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:58:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:58:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:58:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:58:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:58:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:58:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:58:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:58:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:58:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:58:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:58:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:58:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:58:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:58:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:58:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:58:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:58:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:58:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:58:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:58:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 02:58:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 02:58:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 02:58:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 02:58:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:58:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 02:58:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 02:58:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:58:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 02:58:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:58:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:58:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:39,905 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:39,905 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 02:58:39,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:39 BoogieIcfgContainer [2020-11-28 02:58:39,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:39,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:39,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:39,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:39,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:38" (1/3) ... [2020-11-28 02:58:39,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d77cebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:39, skipping insertion in model container [2020-11-28 02:58:39,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:38" (2/3) ... [2020-11-28 02:58:39,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d77cebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:39, skipping insertion in model container [2020-11-28 02:58:39,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:39" (3/3) ... [2020-11-28 02:58:39,921 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-11-28 02:58:39,932 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:39,937 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 53 error locations. [2020-11-28 02:58:39,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2020-11-28 02:58:39,979 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:39,980 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:58:39,980 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:39,980 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:39,981 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:39,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:39,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:39,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-11-28 02:58:40,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:58:40,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:40,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:40,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:40,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:40,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1473888481, now seen corresponding path program 1 times [2020-11-28 02:58:40,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:40,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132694820] [2020-11-28 02:58:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:40,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132694820] [2020-11-28 02:58:40,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:40,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:40,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146340011] [2020-11-28 02:58:40,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:40,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:40,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:40,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:40,350 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 4 states. [2020-11-28 02:58:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:40,833 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-11-28 02:58:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:40,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 02:58:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:40,853 INFO L225 Difference]: With dead ends: 125 [2020-11-28 02:58:40,854 INFO L226 Difference]: Without dead ends: 121 [2020-11-28 02:58:40,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-28 02:58:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2020-11-28 02:58:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-28 02:58:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-11-28 02:58:40,923 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 7 [2020-11-28 02:58:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:40,923 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-11-28 02:58:40,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-11-28 02:58:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:58:40,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:40,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:40,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:40,928 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:40,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:40,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1473888482, now seen corresponding path program 1 times [2020-11-28 02:58:40,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:40,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321171782] [2020-11-28 02:58:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321171782] [2020-11-28 02:58:41,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:41,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361536406] [2020-11-28 02:58:41,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:41,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:41,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:41,079 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 4 states. [2020-11-28 02:58:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,471 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-11-28 02:58:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:41,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 02:58:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,473 INFO L225 Difference]: With dead ends: 135 [2020-11-28 02:58:41,473 INFO L226 Difference]: Without dead ends: 135 [2020-11-28 02:58:41,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-28 02:58:41,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-11-28 02:58:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 02:58:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2020-11-28 02:58:41,484 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 7 [2020-11-28 02:58:41,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,485 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions. [2020-11-28 02:58:41,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:41,485 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions. [2020-11-28 02:58:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:58:41,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:41,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,487 INFO L82 PathProgramCache]: Analyzing trace with hash -916999114, now seen corresponding path program 1 times [2020-11-28 02:58:41,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183227044] [2020-11-28 02:58:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183227044] [2020-11-28 02:58:41,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:41,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906815824] [2020-11-28 02:58:41,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:41,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:41,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:41,591 INFO L87 Difference]: Start difference. First operand 122 states and 131 transitions. Second operand 5 states. [2020-11-28 02:58:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,977 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-11-28 02:58:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:41,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 02:58:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,978 INFO L225 Difference]: With dead ends: 129 [2020-11-28 02:58:41,979 INFO L226 Difference]: Without dead ends: 129 [2020-11-28 02:58:41,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-28 02:58:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2020-11-28 02:58:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-28 02:58:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2020-11-28 02:58:41,987 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 12 [2020-11-28 02:58:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,987 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2020-11-28 02:58:41,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2020-11-28 02:58:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:58:41,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:41,989 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash -916999113, now seen corresponding path program 1 times [2020-11-28 02:58:41,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650590775] [2020-11-28 02:58:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:42,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650590775] [2020-11-28 02:58:42,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:42,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:42,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526629368] [2020-11-28 02:58:42,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:42,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:42,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:42,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:42,134 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand 5 states. [2020-11-28 02:58:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:42,525 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2020-11-28 02:58:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:42,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 02:58:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:42,528 INFO L225 Difference]: With dead ends: 151 [2020-11-28 02:58:42,528 INFO L226 Difference]: Without dead ends: 151 [2020-11-28 02:58:42,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:42,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-28 02:58:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 123. [2020-11-28 02:58:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-28 02:58:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2020-11-28 02:58:42,537 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 12 [2020-11-28 02:58:42,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:42,540 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2020-11-28 02:58:42,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2020-11-28 02:58:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:58:42,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:42,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:42,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:42,542 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash 808964045, now seen corresponding path program 1 times [2020-11-28 02:58:42,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:42,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84767723] [2020-11-28 02:58:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:42,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:42,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84767723] [2020-11-28 02:58:42,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:42,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:42,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319916389] [2020-11-28 02:58:42,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:42,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:42,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:42,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:42,637 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand 5 states. [2020-11-28 02:58:42,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:42,913 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2020-11-28 02:58:42,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:42,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 02:58:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:42,914 INFO L225 Difference]: With dead ends: 137 [2020-11-28 02:58:42,915 INFO L226 Difference]: Without dead ends: 137 [2020-11-28 02:58:42,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-28 02:58:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2020-11-28 02:58:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 02:58:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2020-11-28 02:58:42,922 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 16 [2020-11-28 02:58:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:42,922 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2020-11-28 02:58:42,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2020-11-28 02:58:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:58:42,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:42,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:42,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:42,923 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:42,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1966366765, now seen corresponding path program 1 times [2020-11-28 02:58:42,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:42,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093366787] [2020-11-28 02:58:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:43,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:43,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093366787] [2020-11-28 02:58:43,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:43,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:43,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149704421] [2020-11-28 02:58:43,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:43,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:43,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:43,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:43,026 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 7 states. [2020-11-28 02:58:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:43,553 INFO L93 Difference]: Finished difference Result 175 states and 192 transitions. [2020-11-28 02:58:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:43,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-28 02:58:43,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:43,556 INFO L225 Difference]: With dead ends: 175 [2020-11-28 02:58:43,556 INFO L226 Difference]: Without dead ends: 175 [2020-11-28 02:58:43,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-28 02:58:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 121. [2020-11-28 02:58:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-28 02:58:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-11-28 02:58:43,563 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 15 [2020-11-28 02:58:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:43,563 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-11-28 02:58:43,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-11-28 02:58:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:58:43,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:43,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:43,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:58:43,572 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1966366766, now seen corresponding path program 1 times [2020-11-28 02:58:43,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:43,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794354674] [2020-11-28 02:58:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:43,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794354674] [2020-11-28 02:58:43,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:43,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:43,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662905483] [2020-11-28 02:58:43,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:43,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:43,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:43,725 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 7 states. [2020-11-28 02:58:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:44,309 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2020-11-28 02:58:44,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:44,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-28 02:58:44,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:44,311 INFO L225 Difference]: With dead ends: 201 [2020-11-28 02:58:44,311 INFO L226 Difference]: Without dead ends: 201 [2020-11-28 02:58:44,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:44,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-11-28 02:58:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 116. [2020-11-28 02:58:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-28 02:58:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2020-11-28 02:58:44,317 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 15 [2020-11-28 02:58:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:44,318 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2020-11-28 02:58:44,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2020-11-28 02:58:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:44,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:44,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:44,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:58:44,319 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:44,320 INFO L82 PathProgramCache]: Analyzing trace with hash 611018003, now seen corresponding path program 1 times [2020-11-28 02:58:44,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:44,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759597893] [2020-11-28 02:58:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:44,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:44,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759597893] [2020-11-28 02:58:44,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:44,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:58:44,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088287363] [2020-11-28 02:58:44,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:44,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:44,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:44,399 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand 7 states. [2020-11-28 02:58:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:44,733 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2020-11-28 02:58:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:44,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 02:58:44,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:44,735 INFO L225 Difference]: With dead ends: 177 [2020-11-28 02:58:44,735 INFO L226 Difference]: Without dead ends: 177 [2020-11-28 02:58:44,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-28 02:58:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 123. [2020-11-28 02:58:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-28 02:58:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2020-11-28 02:58:44,741 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 19 [2020-11-28 02:58:44,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:44,741 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2020-11-28 02:58:44,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2020-11-28 02:58:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:58:44,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:44,742 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, 1, 1] [2020-11-28 02:58:44,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:58:44,742 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:44,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:44,743 INFO L82 PathProgramCache]: Analyzing trace with hash 655601984, now seen corresponding path program 1 times [2020-11-28 02:58:44,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:44,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445076141] [2020-11-28 02:58:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:44,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:44,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445076141] [2020-11-28 02:58:44,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:44,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:44,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483852659] [2020-11-28 02:58:44,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:44,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:44,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:44,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:44,930 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand 6 states. [2020-11-28 02:58:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:45,183 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-11-28 02:58:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:45,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-28 02:58:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:45,184 INFO L225 Difference]: With dead ends: 127 [2020-11-28 02:58:45,184 INFO L226 Difference]: Without dead ends: 127 [2020-11-28 02:58:45,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-28 02:58:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2020-11-28 02:58:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 02:58:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2020-11-28 02:58:45,189 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 23 [2020-11-28 02:58:45,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:45,190 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2020-11-28 02:58:45,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:45,190 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2020-11-28 02:58:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:58:45,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:45,191 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, 1, 1] [2020-11-28 02:58:45,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:58:45,191 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:45,192 INFO L82 PathProgramCache]: Analyzing trace with hash 83488924, now seen corresponding path program 1 times [2020-11-28 02:58:45,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:45,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760339782] [2020-11-28 02:58:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:45,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760339782] [2020-11-28 02:58:45,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:45,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:45,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519029271] [2020-11-28 02:58:45,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:45,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:45,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:45,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:45,293 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 7 states. [2020-11-28 02:58:45,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:45,858 INFO L93 Difference]: Finished difference Result 186 states and 204 transitions. [2020-11-28 02:58:45,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:45,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 02:58:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:45,860 INFO L225 Difference]: With dead ends: 186 [2020-11-28 02:58:45,860 INFO L226 Difference]: Without dead ends: 186 [2020-11-28 02:58:45,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:45,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-28 02:58:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 121. [2020-11-28 02:58:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-28 02:58:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-11-28 02:58:45,865 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 23 [2020-11-28 02:58:45,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:45,866 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-11-28 02:58:45,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:45,866 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-11-28 02:58:45,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:58:45,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:45,867 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, 1, 1] [2020-11-28 02:58:45,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:58:45,868 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:45,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:45,868 INFO L82 PathProgramCache]: Analyzing trace with hash 83488925, now seen corresponding path program 1 times [2020-11-28 02:58:45,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:45,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783220242] [2020-11-28 02:58:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:45,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783220242] [2020-11-28 02:58:45,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:45,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:45,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426161668] [2020-11-28 02:58:45,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:45,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:45,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:45,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:45,969 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 7 states. [2020-11-28 02:58:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:46,603 INFO L93 Difference]: Finished difference Result 208 states and 229 transitions. [2020-11-28 02:58:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:46,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 02:58:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:46,606 INFO L225 Difference]: With dead ends: 208 [2020-11-28 02:58:46,606 INFO L226 Difference]: Without dead ends: 208 [2020-11-28 02:58:46,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-28 02:58:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 113. [2020-11-28 02:58:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-28 02:58:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-11-28 02:58:46,611 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 23 [2020-11-28 02:58:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:46,611 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-11-28 02:58:46,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-11-28 02:58:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:58:46,616 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:46,616 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, 1, 1, 1, 1] [2020-11-28 02:58:46,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 02:58:46,617 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:46,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:46,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1027853199, now seen corresponding path program 1 times [2020-11-28 02:58:46,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:46,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057771769] [2020-11-28 02:58:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:46,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:46,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:46,696 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:46,697 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:46,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 02:58:46,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:46 BoogieIcfgContainer [2020-11-28 02:58:46,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:46,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:46,742 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:46,742 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:46,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:39" (3/4) ... [2020-11-28 02:58:46,746 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:58:46,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:46,749 INFO L168 Benchmark]: Toolchain (without parser) took 8440.17 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 60.9 MB in the beginning and 83.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:46,750 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 92.3 MB. Free memory was 48.7 MB in the beginning and 48.7 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:46,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.80 ms. Allocated memory is still 92.3 MB. Free memory was 60.7 MB in the beginning and 58.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:46,757 INFO L168 Benchmark]: Boogie Preprocessor took 95.42 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 55.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:46,758 INFO L168 Benchmark]: RCFGBuilder took 967.39 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.1 MB in the beginning and 53.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:46,758 INFO L168 Benchmark]: TraceAbstraction took 6830.51 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 53.5 MB in the beginning and 83.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:46,759 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 161.5 MB. Free memory is still 83.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:46,769 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 92.3 MB. Free memory was 48.7 MB in the beginning and 48.7 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 533.80 ms. Allocated memory is still 92.3 MB. Free memory was 60.7 MB in the beginning and 58.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.42 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 55.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 967.39 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.1 MB in the beginning and 53.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6830.51 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 53.5 MB in the beginning and 83.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 161.5 MB. Free memory is still 83.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 993. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1049] COND TRUE !(end->next) [L1049] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 53 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 972 SDtfs, 1249 SDslu, 1553 SDs, 0 SdLazy, 3545 SolverSat, 159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 433 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 12018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:49,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:49,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:49,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:49,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:49,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:49,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:49,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:49,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:49,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:49,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:49,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:49,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:49,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:49,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:49,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:49,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:49,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:49,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:49,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:49,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:49,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:49,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:49,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:49,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:49,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:49,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:49,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:49,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:49,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:49,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:49,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:49,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:49,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:49,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:49,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:49,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:49,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:49,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:49,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:49,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:49,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-28 02:58:49,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:49,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:49,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:49,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:49,502 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:49,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:49,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:49,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:58:49,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:49,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:49,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:49,504 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:58:49,504 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:58:49,505 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:58:49,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:49,505 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:58:49,505 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 02:58:49,506 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 02:58:49,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:49,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:49,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:49,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:49,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:49,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:49,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:49,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:49,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:49,508 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 02:58:49,508 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 02:58:49,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:49,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 02:58:49,509 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ad9666b5-e27e-40bb-826a-1d899e3e72e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2020-11-28 02:58:49,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:49,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:49,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:49,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:49,910 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:49,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-28 02:58:49,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data/7c040aeef/a72ae8d34c6449b8b43d26bd1aeae284/FLAG6b4ae2560 [2020-11-28 02:58:50,585 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:50,586 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-28 02:58:50,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data/7c040aeef/a72ae8d34c6449b8b43d26bd1aeae284/FLAG6b4ae2560 [2020-11-28 02:58:50,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/data/7c040aeef/a72ae8d34c6449b8b43d26bd1aeae284 [2020-11-28 02:58:50,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:50,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:58:50,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:50,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:50,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:50,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:50" (1/1) ... [2020-11-28 02:58:50,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcf545d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:50, skipping insertion in model container [2020-11-28 02:58:50,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:50" (1/1) ... [2020-11-28 02:58:50,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:50,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:51,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:51,311 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:51,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:51,431 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:51,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51 WrapperNode [2020-11-28 02:58:51,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:51,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:51,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:51,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:51,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (1/1) ... [2020-11-28 02:58:51,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (1/1) ... [2020-11-28 02:58:51,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (1/1) ... [2020-11-28 02:58:51,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (1/1) ... [2020-11-28 02:58:51,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (1/1) ... [2020-11-28 02:58:51,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (1/1) ... [2020-11-28 02:58:51,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (1/1) ... [2020-11-28 02:58:51,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:51,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:51,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:51,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:51,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:58:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 02:58:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 02:58:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:58:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:58:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:58:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:58:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:58:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:58:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:58:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:58:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:58:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:58:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:58:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:58:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:58:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:58:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:58:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:58:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:58:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:58:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:58:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:58:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:58:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:58:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:58:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:58:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:58:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:58:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:58:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:58:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:58:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:58:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:58:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:58:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:58:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:58:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:58:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:58:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:58:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:58:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:58:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:58:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:58:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:58:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:58:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:58:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:58:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:58:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:58:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:58:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:58:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:58:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:58:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:58:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:58:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:58:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:58:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-28 02:58:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:58:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:58:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:58:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:58:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:58:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:58:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:58:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:58:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:58:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:58:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:58:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:58:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:58:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:58:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:58:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:58:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:58:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:58:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:58:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:58:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:58:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:58:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:58:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:58:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:58:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:58:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:58:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:58:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:58:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:58:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:58:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 02:58:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 02:58:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 02:58:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 02:58:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:58:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 02:58:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 02:58:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 02:58:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 02:58:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 02:58:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:58:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 02:58:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 02:58:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-28 02:58:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-28 02:58:52,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:52,644 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 02:58:52,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:52 BoogieIcfgContainer [2020-11-28 02:58:52,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:52,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:52,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:52,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:52,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:50" (1/3) ... [2020-11-28 02:58:52,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ae197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:52, skipping insertion in model container [2020-11-28 02:58:52,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:51" (2/3) ... [2020-11-28 02:58:52,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ae197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:52, skipping insertion in model container [2020-11-28 02:58:52,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:52" (3/3) ... [2020-11-28 02:58:52,655 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-11-28 02:58:52,666 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:52,671 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 53 error locations. [2020-11-28 02:58:52,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2020-11-28 02:58:52,709 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:52,709 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:58:52,710 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:52,710 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:52,710 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:52,710 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:52,710 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:52,710 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-11-28 02:58:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:58:52,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:52,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:52,738 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:52,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1600099851, now seen corresponding path program 1 times [2020-11-28 02:58:52,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:52,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316669762] [2020-11-28 02:58:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 02:58:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:52,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:58:52,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:53,052 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:53,053 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:53,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:53,061 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:53,061 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 02:58:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:53,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:53,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316669762] [2020-11-28 02:58:53,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:53,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 02:58:53,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198403730] [2020-11-28 02:58:53,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:58:53,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:53,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:53,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:53,125 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-11-28 02:58:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:53,495 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2020-11-28 02:58:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:53,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 02:58:53,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:53,510 INFO L225 Difference]: With dead ends: 123 [2020-11-28 02:58:53,510 INFO L226 Difference]: Without dead ends: 119 [2020-11-28 02:58:53,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-28 02:58:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2020-11-28 02:58:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-28 02:58:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2020-11-28 02:58:53,560 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 7 [2020-11-28 02:58:53,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:53,561 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2020-11-28 02:58:53,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:58:53,561 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2020-11-28 02:58:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:58:53,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:53,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:53,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 02:58:53,769 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:53,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1600099850, now seen corresponding path program 1 times [2020-11-28 02:58:53,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:53,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39673778] [2020-11-28 02:58:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 02:58:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:53,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:58:53,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:53,984 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:53,984 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:53,992 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:53,993 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:53,993 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:58:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:54,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:54,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39673778] [2020-11-28 02:58:54,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:54,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-28 02:58:54,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146499153] [2020-11-28 02:58:54,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:54,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:54,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:54,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:54,072 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand 4 states. [2020-11-28 02:58:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:54,502 INFO L93 Difference]: Finished difference Result 133 states and 141 transitions. [2020-11-28 02:58:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:54,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 02:58:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:54,506 INFO L225 Difference]: With dead ends: 133 [2020-11-28 02:58:54,506 INFO L226 Difference]: Without dead ends: 133 [2020-11-28 02:58:54,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-28 02:58:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 120. [2020-11-28 02:58:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 02:58:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2020-11-28 02:58:54,534 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 7 [2020-11-28 02:58:54,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:54,535 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2020-11-28 02:58:54,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2020-11-28 02:58:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:58:54,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:54,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:54,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 02:58:54,760 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:54,762 INFO L82 PathProgramCache]: Analyzing trace with hash 633585145, now seen corresponding path program 1 times [2020-11-28 02:58:54,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:54,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002933680] [2020-11-28 02:58:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 02:58:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:54,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:58:54,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:54,992 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:54,992 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:54,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:54,997 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:54,997 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 02:58:55,047 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:55,048 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-11-28 02:58:55,049 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:55,074 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-11-28 02:58:55,075 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. [2020-11-28 02:58:55,075 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-11-28 02:58:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:55,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:55,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002933680] [2020-11-28 02:58:55,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:55,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 02:58:55,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624847419] [2020-11-28 02:58:55,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:55,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:55,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:55,123 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 4 states. [2020-11-28 02:58:55,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:55,589 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-11-28 02:58:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:55,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:58:55,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:55,592 INFO L225 Difference]: With dead ends: 127 [2020-11-28 02:58:55,592 INFO L226 Difference]: Without dead ends: 127 [2020-11-28 02:58:55,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:55,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-28 02:58:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2020-11-28 02:58:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 02:58:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2020-11-28 02:58:55,602 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 11 [2020-11-28 02:58:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:55,602 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2020-11-28 02:58:55,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2020-11-28 02:58:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:58:55,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:55,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:55,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 02:58:55,804 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash 633585146, now seen corresponding path program 1 times [2020-11-28 02:58:55,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:55,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901278970] [2020-11-28 02:58:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 02:58:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:55,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:58:55,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:56,005 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:56,006 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:56,013 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:56,013 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:56,013 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:58:56,057 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:56,057 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-28 02:58:56,058 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:56,082 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-11-28 02:58:56,083 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. [2020-11-28 02:58:56,083 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-11-28 02:58:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:56,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:56,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901278970] [2020-11-28 02:58:56,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:56,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-11-28 02:58:56,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582308192] [2020-11-28 02:58:56,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:56,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:56,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:56,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:56,409 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand 7 states. [2020-11-28 02:58:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:57,633 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2020-11-28 02:58:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:57,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-28 02:58:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:57,636 INFO L225 Difference]: With dead ends: 159 [2020-11-28 02:58:57,636 INFO L226 Difference]: Without dead ends: 159 [2020-11-28 02:58:57,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-28 02:58:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 113. [2020-11-28 02:58:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-28 02:58:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2020-11-28 02:58:57,643 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 11 [2020-11-28 02:58:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:57,643 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2020-11-28 02:58:57,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2020-11-28 02:58:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:57,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:57,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:57,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 02:58:57,854 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:57,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1246188289, now seen corresponding path program 1 times [2020-11-28 02:58:57,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:57,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315633712] [2020-11-28 02:58:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 02:58:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:58,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:58:58,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:58,081 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:58,081 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:58,084 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:58,084 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:58,085 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 02:58:58,098 INFO L384 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 [2020-11-28 02:58:58,098 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:58,114 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:58,114 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:58,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-28 02:58:58,138 INFO L384 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 19 treesize of output 11 [2020-11-28 02:58:58,138 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:58,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:58,141 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:58,141 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-11-28 02:58:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:58,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:58,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315633712] [2020-11-28 02:58:58,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:58,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 02:58:58,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679607699] [2020-11-28 02:58:58,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:58,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:58,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:58,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:58,183 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand 6 states. [2020-11-28 02:58:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:58,948 INFO L93 Difference]: Finished difference Result 186 states and 208 transitions. [2020-11-28 02:58:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:58,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 02:58:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:58,950 INFO L225 Difference]: With dead ends: 186 [2020-11-28 02:58:58,950 INFO L226 Difference]: Without dead ends: 186 [2020-11-28 02:58:58,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-28 02:58:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 112. [2020-11-28 02:58:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 02:58:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2020-11-28 02:58:58,979 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 14 [2020-11-28 02:58:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:58,980 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2020-11-28 02:58:58,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2020-11-28 02:58:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:58,982 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:58,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:59,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 02:58:59,184 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:58:59,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:59,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1246188288, now seen corresponding path program 1 times [2020-11-28 02:58:59,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:59,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502446964] [2020-11-28 02:58:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 02:58:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:59,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:58:59,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:59,391 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:58:59,391 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:59,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:59,396 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:59,397 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:58:59,423 INFO L384 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 [2020-11-28 02:58:59,423 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:59,440 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:59,443 INFO L384 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 [2020-11-28 02:58:59,443 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:59,451 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:59,452 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:59,452 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-11-28 02:58:59,510 INFO L384 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 [2020-11-28 02:58:59,510 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:59,525 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:59,528 INFO L384 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 19 treesize of output 11 [2020-11-28 02:58:59,529 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:59,534 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:59,534 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:59,535 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-11-28 02:58:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:59,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:59,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502446964] [2020-11-28 02:58:59,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:59,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-28 02:58:59,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047101224] [2020-11-28 02:58:59,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:59,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:59,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:59,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:59,799 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand 10 states. [2020-11-28 02:59:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:01,821 INFO L93 Difference]: Finished difference Result 217 states and 244 transitions. [2020-11-28 02:59:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:59:01,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 02:59:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:01,823 INFO L225 Difference]: With dead ends: 217 [2020-11-28 02:59:01,823 INFO L226 Difference]: Without dead ends: 217 [2020-11-28 02:59:01,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-11-28 02:59:01,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-28 02:59:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 108. [2020-11-28 02:59:01,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-28 02:59:01,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2020-11-28 02:59:01,833 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 14 [2020-11-28 02:59:01,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:01,833 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2020-11-28 02:59:01,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:59:01,834 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2020-11-28 02:59:01,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:59:01,834 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:01,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:02,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 02:59:02,050 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:59:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:02,051 INFO L82 PathProgramCache]: Analyzing trace with hash 3050255, now seen corresponding path program 1 times [2020-11-28 02:59:02,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:59:02,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113738747] [2020-11-28 02:59:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 02:59:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:59:02,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:02,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:59:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:02,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113738747] [2020-11-28 02:59:02,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:02,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 02:59:02,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901585507] [2020-11-28 02:59:02,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:02,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:59:02,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:02,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:02,214 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand 4 states. [2020-11-28 02:59:02,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:02,517 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-11-28 02:59:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:02,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 02:59:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:02,518 INFO L225 Difference]: With dead ends: 128 [2020-11-28 02:59:02,518 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 02:59:02,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 02:59:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 107. [2020-11-28 02:59:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-28 02:59:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2020-11-28 02:59:02,526 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 15 [2020-11-28 02:59:02,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:02,526 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2020-11-28 02:59:02,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2020-11-28 02:59:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:59:02,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:02,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:02,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 02:59:02,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:59:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:02,740 INFO L82 PathProgramCache]: Analyzing trace with hash 519570213, now seen corresponding path program 1 times [2020-11-28 02:59:02,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:59:02,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769923193] [2020-11-28 02:59:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 02:59:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:02,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:02,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:02,882 INFO L384 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 13 treesize of output 9 [2020-11-28 02:59:02,882 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:02,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:02,885 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:02,885 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-28 02:59:02,907 INFO L384 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 19 treesize of output 7 [2020-11-28 02:59:02,908 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:02,910 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:02,910 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:02,911 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-28 02:59:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:02,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:59:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:02,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769923193] [2020-11-28 02:59:02,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:02,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 02:59:02,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534144270] [2020-11-28 02:59:02,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:02,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:59:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:02,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:02,949 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand 5 states. [2020-11-28 02:59:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:03,477 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2020-11-28 02:59:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:03,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 02:59:03,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:03,479 INFO L225 Difference]: With dead ends: 166 [2020-11-28 02:59:03,479 INFO L226 Difference]: Without dead ends: 166 [2020-11-28 02:59:03,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-28 02:59:03,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 113. [2020-11-28 02:59:03,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-28 02:59:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-11-28 02:59:03,487 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 18 [2020-11-28 02:59:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:03,487 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-11-28 02:59:03,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-11-28 02:59:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:59:03,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:03,488 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] [2020-11-28 02:59:03,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 02:59:03,696 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:59:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:03,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1758607283, now seen corresponding path program 1 times [2020-11-28 02:59:03,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:59:03,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155472921] [2020-11-28 02:59:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-28 02:59:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:03,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:03,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:03,923 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:59:03,923 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:03,926 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:03,927 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:03,927 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 02:59:03,944 INFO L384 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 [2020-11-28 02:59:03,944 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:03,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:03,958 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:03,958 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-28 02:59:03,977 INFO L384 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 19 treesize of output 11 [2020-11-28 02:59:03,977 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:03,984 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:03,984 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:03,984 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-11-28 02:59:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:04,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:59:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:04,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155472921] [2020-11-28 02:59:04,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:04,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 02:59:04,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964876163] [2020-11-28 02:59:04,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:04,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:59:04,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:04,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:04,027 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 6 states. [2020-11-28 02:59:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:04,928 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-11-28 02:59:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:59:04,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-28 02:59:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:04,930 INFO L225 Difference]: With dead ends: 172 [2020-11-28 02:59:04,930 INFO L226 Difference]: Without dead ends: 172 [2020-11-28 02:59:04,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:59:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-28 02:59:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 112. [2020-11-28 02:59:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 02:59:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-11-28 02:59:04,935 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 21 [2020-11-28 02:59:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:04,935 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-11-28 02:59:04,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-11-28 02:59:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:59:04,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:04,936 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] [2020-11-28 02:59:05,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 02:59:05,137 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:59:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:05,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1758607282, now seen corresponding path program 1 times [2020-11-28 02:59:05,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:59:05,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538309878] [2020-11-28 02:59:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-28 02:59:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:59:05,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:05,307 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:59:05,307 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:05,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:05,313 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:05,313 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:59:05,333 INFO L384 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 [2020-11-28 02:59:05,333 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:05,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:05,352 INFO L384 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 [2020-11-28 02:59:05,352 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:05,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:05,371 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:05,371 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-11-28 02:59:05,419 INFO L384 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 [2020-11-28 02:59:05,419 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:05,443 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:05,446 INFO L384 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 19 treesize of output 11 [2020-11-28 02:59:05,447 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:05,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:05,455 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:05,455 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-11-28 02:59:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:05,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:59:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:05,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538309878] [2020-11-28 02:59:05,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:05,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-28 02:59:05,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419300170] [2020-11-28 02:59:05,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:59:05,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:59:05,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:59:05,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:59:05,678 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 10 states. [2020-11-28 02:59:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:07,961 INFO L93 Difference]: Finished difference Result 224 states and 247 transitions. [2020-11-28 02:59:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:59:07,962 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-28 02:59:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:07,964 INFO L225 Difference]: With dead ends: 224 [2020-11-28 02:59:07,964 INFO L226 Difference]: Without dead ends: 224 [2020-11-28 02:59:07,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:59:07,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-28 02:59:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 107. [2020-11-28 02:59:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-28 02:59:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2020-11-28 02:59:07,968 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 21 [2020-11-28 02:59:07,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:07,969 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2020-11-28 02:59:07,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:59:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2020-11-28 02:59:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:59:07,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:07,970 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, 1] [2020-11-28 02:59:08,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-28 02:59:08,180 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:59:08,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:08,180 INFO L82 PathProgramCache]: Analyzing trace with hash -765256239, now seen corresponding path program 1 times [2020-11-28 02:59:08,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:59:08,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693275670] [2020-11-28 02:59:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-28 02:59:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:08,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:08,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:08,326 INFO L384 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 13 treesize of output 9 [2020-11-28 02:59:08,326 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:08,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:08,329 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:08,329 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-28 02:59:08,350 INFO L384 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 19 treesize of output 7 [2020-11-28 02:59:08,351 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:08,352 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:08,353 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:08,353 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-28 02:59:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:08,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:59:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:08,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693275670] [2020-11-28 02:59:08,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:08,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 02:59:08,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764139785] [2020-11-28 02:59:08,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:59:08,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:59:08,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:59:08,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:59:08,445 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand 8 states. [2020-11-28 02:59:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:09,046 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2020-11-28 02:59:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:09,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-11-28 02:59:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:09,047 INFO L225 Difference]: With dead ends: 158 [2020-11-28 02:59:09,047 INFO L226 Difference]: Without dead ends: 158 [2020-11-28 02:59:09,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:59:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-28 02:59:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 111. [2020-11-28 02:59:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-28 02:59:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-11-28 02:59:09,052 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 22 [2020-11-28 02:59:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:09,052 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-11-28 02:59:09,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:59:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-11-28 02:59:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:59:09,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:09,053 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, 1, 1, 1] [2020-11-28 02:59:09,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-28 02:59:09,254 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 02:59:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:09,254 INFO L82 PathProgramCache]: Analyzing trace with hash -673004413, now seen corresponding path program 1 times [2020-11-28 02:59:09,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:59:09,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634559161] [2020-11-28 02:59:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad9666b5-e27e-40bb-826a-1d899e3e72e1/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-28 02:59:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:09,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:09,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:09,479 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 02:59:09,480 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:59:09,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-28 02:59:09,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:59:09 BoogieIcfgContainer [2020-11-28 02:59:09,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:59:09,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:09,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:09,707 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:09,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:52" (3/4) ... [2020-11-28 02:59:09,711 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:59:09,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:09,712 INFO L168 Benchmark]: Toolchain (without parser) took 18848.97 ms. Allocated memory was 48.2 MB in the beginning and 111.1 MB in the end (delta: 62.9 MB). Free memory was 22.2 MB in the beginning and 52.1 MB in the end (delta: -30.0 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:09,713 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 18.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:09,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.70 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 22.0 MB in the beginning and 33.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:09,714 INFO L168 Benchmark]: Boogie Preprocessor took 111.03 ms. Allocated memory is still 62.9 MB. Free memory was 33.5 MB in the beginning and 44.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:09,714 INFO L168 Benchmark]: RCFGBuilder took 1103.15 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 44.4 MB in the beginning and 53.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:09,715 INFO L168 Benchmark]: TraceAbstraction took 17058.10 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 53.1 MB in the beginning and 53.2 MB in the end (delta: -72.8 kB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:09,715 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 111.1 MB. Free memory was 53.2 MB in the beginning and 52.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:09,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 18.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 554.70 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 22.0 MB in the beginning and 33.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.03 ms. Allocated memory is still 62.9 MB. Free memory was 33.5 MB in the beginning and 44.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1103.15 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 44.4 MB in the beginning and 53.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17058.10 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 53.1 MB in the beginning and 53.2 MB in the end (delta: -72.8 kB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.18 ms. Allocated memory is still 111.1 MB. Free memory was 53.2 MB in the beginning and 52.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 993. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1007] list->next = ((void*)0) VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1049] COND TRUE !(end->next) [L1049] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 133 locations, 53 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.9s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 951 SDtfs, 1594 SDslu, 2014 SDs, 0 SdLazy, 2869 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 262 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 559 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 300 ConstructedInterpolants, 4 QuantifiedInterpolants, 17791 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1018 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...