./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-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_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/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 50bdaf600d03af0a677a59daf6a875dbe69c10b2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:59,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:59,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:59,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:59,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:59,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:59,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:59,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:59,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:59,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:59,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:59,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:59,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:59,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:59,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:59,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:59,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:59,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:59,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:59,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:59,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:59,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:59,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:59,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:59,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:59,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:59,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:59,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:59,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:59,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:59,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:59,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:59,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:59,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:59,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:59,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:59,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:59,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:59,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:59,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:59,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:59,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:57:59,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:59,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:59,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:59,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:59,956 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:59,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:59,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:59,957 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:57:59,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:59,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:59,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:59,958 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:57:59,958 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:57:59,958 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:57:59,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:59,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:57:59,959 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:59,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:59,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:59,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:59,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:59,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:59,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:59,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:59,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:59,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:59,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:59,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:59,962 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_92fa253e-c3f0-4c34-9781-2c33d48fc252/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50bdaf600d03af0a677a59daf6a875dbe69c10b2 [2020-11-28 02:58:00,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:00,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:00,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:00,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:00,260 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:00,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2020-11-28 02:58:00,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/data/4e0f1354c/1539881c87d4411db6077fad420538ca/FLAG311a46c9d [2020-11-28 02:58:00,996 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:01,002 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2020-11-28 02:58:01,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/data/4e0f1354c/1539881c87d4411db6077fad420538ca/FLAG311a46c9d [2020-11-28 02:58:01,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/data/4e0f1354c/1539881c87d4411db6077fad420538ca [2020-11-28 02:58:01,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:01,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:58:01,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:01,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:01,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:01,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b14199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01, skipping insertion in model container [2020-11-28 02:58:01,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:01,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:01,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:01,756 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:01,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:01,841 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:01,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01 WrapperNode [2020-11-28 02:58:01,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:01,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:01,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:01,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:01,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (1/1) ... [2020-11-28 02:58:01,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:01,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:01,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:01,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:01,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/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 02:58:01,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:58:01,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:01,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 02:58:01,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 02:58:01,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 02:58:01,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 02:58:01,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 02:58:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrreplace [2020-11-28 02:58:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:58:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:58:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:58:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:58:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:58:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:58:01,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:58:01,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:58:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 02:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 02:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 02:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 02:58:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 02:58:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:58:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:58:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:58:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:58:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:58:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:58:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:58:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:58:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:58:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:58:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:58:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:58:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:58:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:58:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:58:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:58:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:58:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:58:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:58:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:58:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:58:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:58:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:58:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:58:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:58:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:58:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:58:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:58:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:58:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:58:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:58:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:58:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:58:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:58:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:58:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:58:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:58:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:58:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:58:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:58:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:58:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:58:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:58:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:58:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:58:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:58:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-28 02:58:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure cstrreplace [2020-11-28 02:58:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:58:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:58:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:58:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:58:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:02,650 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:02,650 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 02:58:02,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:02 BoogieIcfgContainer [2020-11-28 02:58:02,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:02,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:02,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:02,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:02,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:01" (1/3) ... [2020-11-28 02:58:02,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bac354d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:02, skipping insertion in model container [2020-11-28 02:58:02,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:01" (2/3) ... [2020-11-28 02:58:02,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bac354d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:02, skipping insertion in model container [2020-11-28 02:58:02,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:02" (3/3) ... [2020-11-28 02:58:02,668 INFO L111 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2020-11-28 02:58:02,681 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:02,687 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-28 02:58:02,700 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-28 02:58:02,733 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:02,734 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:58:02,739 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:02,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:02,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:02,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:02,740 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:02,740 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-11-28 02:58:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:58:02,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:02,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:02,778 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:02,788 INFO L82 PathProgramCache]: Analyzing trace with hash -610270170, now seen corresponding path program 1 times [2020-11-28 02:58:02,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:02,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981519963] [2020-11-28 02:58:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,086 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 02:58:03,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981519963] [2020-11-28 02:58:03,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:03,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:03,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146402237] [2020-11-28 02:58:03,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:03,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:03,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:03,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:03,118 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-11-28 02:58:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:03,296 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-11-28 02:58:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:03,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 02:58:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:03,316 INFO L225 Difference]: With dead ends: 40 [2020-11-28 02:58:03,316 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 02:58:03,318 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 02:58:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 02:58:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 02:58:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 02:58:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-28 02:58:03,365 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2020-11-28 02:58:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:03,366 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-28 02:58:03,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-28 02:58:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:58:03,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:03,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:03,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:03,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash -610270169, now seen corresponding path program 1 times [2020-11-28 02:58:03,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:03,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153846101] [2020-11-28 02:58:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,509 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 02:58:03,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153846101] [2020-11-28 02:58:03,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:03,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:03,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963475123] [2020-11-28 02:58:03,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:03,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:03,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:03,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:03,517 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2020-11-28 02:58:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:03,677 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-11-28 02:58:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:03,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 02:58:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:03,679 INFO L225 Difference]: With dead ends: 36 [2020-11-28 02:58:03,680 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 02:58:03,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 02:58:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 02:58:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:58:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-28 02:58:03,686 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2020-11-28 02:58:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:03,686 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-28 02:58:03,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:03,686 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-28 02:58:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:58:03,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:03,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:03,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:03,690 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:03,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:03,690 INFO L82 PathProgramCache]: Analyzing trace with hash -610270116, now seen corresponding path program 1 times [2020-11-28 02:58:03,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:03,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775468505] [2020-11-28 02:58:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,781 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 02:58:03,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775468505] [2020-11-28 02:58:03,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:03,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:03,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644008581] [2020-11-28 02:58:03,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:03,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:03,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:03,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:03,791 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2020-11-28 02:58:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:03,927 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-28 02:58:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:03,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 02:58:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:03,930 INFO L225 Difference]: With dead ends: 44 [2020-11-28 02:58:03,931 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 02:58:03,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 02:58:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-11-28 02:58:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 02:58:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-28 02:58:03,947 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2020-11-28 02:58:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:03,947 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-28 02:58:03,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-28 02:58:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:58:03,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:03,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:03,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:03,953 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:03,954 INFO L82 PathProgramCache]: Analyzing trace with hash -610210534, now seen corresponding path program 1 times [2020-11-28 02:58:03,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:03,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800770746] [2020-11-28 02:58:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,045 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 02:58:04,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800770746] [2020-11-28 02:58:04,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:04,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:04,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796137554] [2020-11-28 02:58:04,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:04,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:04,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:04,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:04,051 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2020-11-28 02:58:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:04,209 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-11-28 02:58:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:04,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 02:58:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:04,211 INFO L225 Difference]: With dead ends: 48 [2020-11-28 02:58:04,212 INFO L226 Difference]: Without dead ends: 48 [2020-11-28 02:58:04,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-28 02:58:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-11-28 02:58:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 02:58:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-28 02:58:04,217 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 10 [2020-11-28 02:58:04,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:04,218 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-28 02:58:04,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-28 02:58:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:04,218 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:04,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:04,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:04,219 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:04,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041719, now seen corresponding path program 1 times [2020-11-28 02:58:04,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:04,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378441353] [2020-11-28 02:58:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,307 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 02:58:04,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378441353] [2020-11-28 02:58:04,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:04,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:04,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286015428] [2020-11-28 02:58:04,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:04,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:04,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:04,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:04,310 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2020-11-28 02:58:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:04,483 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-11-28 02:58:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:04,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 02:58:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:04,484 INFO L225 Difference]: With dead ends: 37 [2020-11-28 02:58:04,484 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 02:58:04,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 02:58:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 02:58:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 02:58:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-28 02:58:04,489 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 14 [2020-11-28 02:58:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:04,490 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-28 02:58:04,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-28 02:58:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:04,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:04,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:04,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:04,491 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:04,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041720, now seen corresponding path program 1 times [2020-11-28 02:58:04,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:04,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934112744] [2020-11-28 02:58:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,631 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 02:58:04,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934112744] [2020-11-28 02:58:04,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:04,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:04,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323695559] [2020-11-28 02:58:04,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:04,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:04,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:04,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:04,634 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-11-28 02:58:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:04,840 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-11-28 02:58:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:04,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-28 02:58:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:04,843 INFO L225 Difference]: With dead ends: 47 [2020-11-28 02:58:04,843 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 02:58:04,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:58:04,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 02:58:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2020-11-28 02:58:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 02:58:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-11-28 02:58:04,848 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 14 [2020-11-28 02:58:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:04,848 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-28 02:58:04,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-11-28 02:58:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:04,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:04,849 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:04,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:58:04,850 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:04,850 INFO L82 PathProgramCache]: Analyzing trace with hash 415323869, now seen corresponding path program 1 times [2020-11-28 02:58:04,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:04,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096863486] [2020-11-28 02:58:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:04,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096863486] [2020-11-28 02:58:04,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053260652] [2020-11-28 02:58:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:05,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:58:05,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:05,207 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 02:58:05,208 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:05,216 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:05,216 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:05,216 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-28 02:58:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:05,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:05,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-11-28 02:58:05,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688967229] [2020-11-28 02:58:05,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:05,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:05,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:05,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:05,346 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2020-11-28 02:58:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:05,509 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-11-28 02:58:05,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:05,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-28 02:58:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:05,510 INFO L225 Difference]: With dead ends: 49 [2020-11-28 02:58:05,511 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 02:58:05,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 02:58:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-11-28 02:58:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 02:58:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-11-28 02:58:05,515 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2020-11-28 02:58:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:05,518 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-11-28 02:58:05,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-11-28 02:58:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:05,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:05,520 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 02:58:05,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 02:58:05,732 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:05,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1580673573, now seen corresponding path program 1 times [2020-11-28 02:58:05,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:05,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797303008] [2020-11-28 02:58:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:05,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797303008] [2020-11-28 02:58:05,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:05,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 02:58:05,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518977908] [2020-11-28 02:58:05,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:58:05,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:05,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:58:05,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:05,935 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-11-28 02:58:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:06,204 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-28 02:58:06,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:06,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-11-28 02:58:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:06,205 INFO L225 Difference]: With dead ends: 51 [2020-11-28 02:58:06,205 INFO L226 Difference]: Without dead ends: 51 [2020-11-28 02:58:06,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:58:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-28 02:58:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-11-28 02:58:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 02:58:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-11-28 02:58:06,211 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19 [2020-11-28 02:58:06,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:06,211 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-11-28 02:58:06,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:58:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-11-28 02:58:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:06,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:06,212 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 02:58:06,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:58:06,212 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:06,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:06,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2127487709, now seen corresponding path program 1 times [2020-11-28 02:58:06,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:06,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613599204] [2020-11-28 02:58:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:06,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:06,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613599204] [2020-11-28 02:58:06,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:06,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-28 02:58:06,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706417572] [2020-11-28 02:58:06,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:06,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:06,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:06,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:06,431 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 10 states. [2020-11-28 02:58:06,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:06,723 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-11-28 02:58:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:58:06,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-28 02:58:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:06,725 INFO L225 Difference]: With dead ends: 64 [2020-11-28 02:58:06,725 INFO L226 Difference]: Without dead ends: 64 [2020-11-28 02:58:06,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:58:06,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-28 02:58:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-11-28 02:58:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 02:58:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-11-28 02:58:06,730 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2020-11-28 02:58:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:06,731 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-11-28 02:58:06,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-11-28 02:58:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:58:06,732 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:06,732 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] [2020-11-28 02:58:06,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:58:06,733 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:06,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:06,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1797581199, now seen corresponding path program 1 times [2020-11-28 02:58:06,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:06,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059064883] [2020-11-28 02:58:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:06,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-28 02:58:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:06,810 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 02:58:06,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059064883] [2020-11-28 02:58:06,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:06,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:06,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914954450] [2020-11-28 02:58:06,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:06,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:06,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:06,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:06,812 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 6 states. [2020-11-28 02:58:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:06,944 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-11-28 02:58:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:06,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-28 02:58:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:06,945 INFO L225 Difference]: With dead ends: 61 [2020-11-28 02:58:06,945 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 02:58:06,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 02:58:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-11-28 02:58:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 02:58:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-11-28 02:58:06,947 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2020-11-28 02:58:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:06,948 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-11-28 02:58:06,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:06,948 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-11-28 02:58:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:58:06,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:06,949 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 02:58:06,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:58:06,949 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:06,949 INFO L82 PathProgramCache]: Analyzing trace with hash 956679290, now seen corresponding path program 1 times [2020-11-28 02:58:06,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:06,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772860467] [2020-11-28 02:58:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:07,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:07,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772860467] [2020-11-28 02:58:07,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801484492] [2020-11-28 02:58:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:07,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 02:58:07,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:07,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:07,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-28 02:58:07,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654594131] [2020-11-28 02:58:07,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 02:58:07,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:07,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 02:58:07,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:58:07,447 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 14 states. [2020-11-28 02:58:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:07,780 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-28 02:58:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:07,780 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-11-28 02:58:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:07,781 INFO L225 Difference]: With dead ends: 44 [2020-11-28 02:58:07,781 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 02:58:07,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-11-28 02:58:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 02:58:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-11-28 02:58:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 02:58:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-11-28 02:58:07,785 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 23 [2020-11-28 02:58:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:07,785 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-11-28 02:58:07,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 02:58:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-11-28 02:58:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 02:58:07,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:07,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:07,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:08,000 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash -403117159, now seen corresponding path program 2 times [2020-11-28 02:58:08,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:08,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407456330] [2020-11-28 02:58:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:08,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407456330] [2020-11-28 02:58:08,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095762706] [2020-11-28 02:58:08,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:08,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:58:08,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:08,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-28 02:58:08,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:08,551 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 14 treesize of output 10 [2020-11-28 02:58:08,551 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:08,558 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:08,560 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 02:58:08,560 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-11-28 02:58:08,849 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 02:58:08,850 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:08,852 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:08,852 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 02:58:08,852 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-11-28 02:58:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:08,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:08,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-11-28 02:58:08,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378433489] [2020-11-28 02:58:08,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-28 02:58:08,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:08,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-28 02:58:08,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-11-28 02:58:08,858 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 19 states. [2020-11-28 02:58:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:09,424 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-11-28 02:58:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:58:09,424 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-11-28 02:58:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:09,425 INFO L225 Difference]: With dead ends: 59 [2020-11-28 02:58:09,425 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 02:58:09,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2020-11-28 02:58:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 02:58:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-11-28 02:58:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 02:58:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-11-28 02:58:09,429 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 28 [2020-11-28 02:58:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:09,430 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-11-28 02:58:09,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-28 02:58:09,430 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-11-28 02:58:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 02:58:09,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:09,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:09,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 02:58:09,640 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:09,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1476818276, now seen corresponding path program 3 times [2020-11-28 02:58:09,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:09,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399789570] [2020-11-28 02:58:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:09,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399789570] [2020-11-28 02:58:09,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295718539] [2020-11-28 02:58:09,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:09,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 02:58:09,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:09,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-28 02:58:09,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:10,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:10,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-11-28 02:58:10,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303519220] [2020-11-28 02:58:10,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-28 02:58:10,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:10,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-28 02:58:10,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-11-28 02:58:10,241 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 19 states. [2020-11-28 02:58:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:10,655 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-11-28 02:58:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:58:10,656 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2020-11-28 02:58:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:10,656 INFO L225 Difference]: With dead ends: 52 [2020-11-28 02:58:10,656 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 02:58:10,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-11-28 02:58:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 02:58:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-11-28 02:58:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 02:58:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-11-28 02:58:10,663 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 32 [2020-11-28 02:58:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:10,664 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-11-28 02:58:10,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-28 02:58:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-11-28 02:58:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 02:58:10,665 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:10,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:10,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:10,866 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:10,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:10,866 INFO L82 PathProgramCache]: Analyzing trace with hash -227169609, now seen corresponding path program 4 times [2020-11-28 02:58:10,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:10,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224458493] [2020-11-28 02:58:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:11,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224458493] [2020-11-28 02:58:11,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366457722] [2020-11-28 02:58:11,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:11,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 02:58:11,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:11,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-28 02:58:11,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:11,287 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 02:58:11,288 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:11,293 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:11,293 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:11,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-28 02:58:11,430 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 15 treesize of output 11 [2020-11-28 02:58:11,430 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:11,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:11,435 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:11,435 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-11-28 02:58:11,664 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2020-11-28 02:58:11,666 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 02:58:11,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:11,687 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-28 02:58:11,690 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:11,690 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-11-28 02:58:11,691 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:11,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:11,704 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:11,704 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2020-11-28 02:58:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:11,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:11,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-11-28 02:58:11,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117654007] [2020-11-28 02:58:11,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-28 02:58:11,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:11,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-28 02:58:11,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-11-28 02:58:11,711 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 24 states. [2020-11-28 02:58:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:12,901 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2020-11-28 02:58:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-28 02:58:12,902 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 37 [2020-11-28 02:58:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:12,902 INFO L225 Difference]: With dead ends: 89 [2020-11-28 02:58:12,903 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 02:58:12,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2020-11-28 02:58:12,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 02:58:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-11-28 02:58:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 02:58:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-28 02:58:12,907 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 37 [2020-11-28 02:58:12,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:12,908 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-28 02:58:12,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-28 02:58:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-28 02:58:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 02:58:12,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:12,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:13,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 02:58:13,116 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1399570668, now seen corresponding path program 5 times [2020-11-28 02:58:13,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:13,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156113578] [2020-11-28 02:58:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:13,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:13,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156113578] [2020-11-28 02:58:13,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837044663] [2020-11-28 02:58:13,358 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:13,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-28 02:58:13,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:13,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-28 02:58:13,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:13,510 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 02:58:13,511 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:13,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:13,520 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:13,520 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-28 02:58:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:13,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:13,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-11-28 02:58:13,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85645511] [2020-11-28 02:58:13,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-28 02:58:13,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:13,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-28 02:58:13,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-11-28 02:58:13,631 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 16 states. [2020-11-28 02:58:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:14,190 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-28 02:58:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:58:14,191 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-11-28 02:58:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:14,192 INFO L225 Difference]: With dead ends: 63 [2020-11-28 02:58:14,192 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 02:58:14,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-11-28 02:58:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 02:58:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-11-28 02:58:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 02:58:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-11-28 02:58:14,197 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 41 [2020-11-28 02:58:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:14,197 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-11-28 02:58:14,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-28 02:58:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-11-28 02:58:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 02:58:14,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:14,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:14,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:14,408 INFO L429 AbstractCegarLoop]: === Iteration 16 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:14,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1288634049, now seen corresponding path program 6 times [2020-11-28 02:58:14,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:14,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038778521] [2020-11-28 02:58:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:14,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:14,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038778521] [2020-11-28 02:58:14,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836940475] [2020-11-28 02:58:14,721 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:14,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-28 02:58:14,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:14,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-28 02:58:14,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:15,040 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 14 treesize of output 10 [2020-11-28 02:58:15,041 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:15,047 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:15,048 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 02:58:15,048 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-11-28 02:58:15,213 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 02:58:15,213 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:15,216 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:15,216 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 02:58:15,216 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-28 02:58:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:15,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:15,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2020-11-28 02:58:15,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948735783] [2020-11-28 02:58:15,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-28 02:58:15,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:15,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-28 02:58:15,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-11-28 02:58:15,223 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 25 states. [2020-11-28 02:58:16,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:16,282 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-11-28 02:58:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-28 02:58:16,282 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-11-28 02:58:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:16,283 INFO L225 Difference]: With dead ends: 104 [2020-11-28 02:58:16,283 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 02:58:16,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2020-11-28 02:58:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 02:58:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-11-28 02:58:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 02:58:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-11-28 02:58:16,288 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 46 [2020-11-28 02:58:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:16,288 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-11-28 02:58:16,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-28 02:58:16,288 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-11-28 02:58:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 02:58:16,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:16,289 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:16,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-28 02:58:16,512 INFO L429 AbstractCegarLoop]: === Iteration 17 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:16,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1360591486, now seen corresponding path program 7 times [2020-11-28 02:58:16,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:16,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140057415] [2020-11-28 02:58:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:16,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140057415] [2020-11-28 02:58:16,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691599956] [2020-11-28 02:58:16,742 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:16,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-28 02:58:16,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:17,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:17,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2020-11-28 02:58:17,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661152155] [2020-11-28 02:58:17,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-28 02:58:17,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:17,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-28 02:58:17,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-11-28 02:58:17,138 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 23 states. [2020-11-28 02:58:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:17,787 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-28 02:58:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 02:58:17,788 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-11-28 02:58:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:17,789 INFO L225 Difference]: With dead ends: 74 [2020-11-28 02:58:17,789 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 02:58:17,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2020-11-28 02:58:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 02:58:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-11-28 02:58:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 02:58:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-11-28 02:58:17,801 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 50 [2020-11-28 02:58:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:17,801 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-11-28 02:58:17,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-28 02:58:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-11-28 02:58:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-28 02:58:17,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:17,808 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:18,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 02:58:18,009 INFO L429 AbstractCegarLoop]: === Iteration 18 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,009 INFO L82 PathProgramCache]: Analyzing trace with hash -278982767, now seen corresponding path program 8 times [2020-11-28 02:58:18,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:18,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238974771] [2020-11-28 02:58:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:18,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238974771] [2020-11-28 02:58:18,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794212064] [2020-11-28 02:58:18,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:18,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:58:18,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:18,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-28 02:58:18,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:18,702 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 14 treesize of output 10 [2020-11-28 02:58:18,702 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:18,709 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 02:58:18,709 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-11-28 02:58:18,890 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 02:58:18,891 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:18,892 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 02:58:18,892 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-28 02:58:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:18,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:18,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 28 [2020-11-28 02:58:18,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017043645] [2020-11-28 02:58:18,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-28 02:58:18,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:18,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-28 02:58:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-11-28 02:58:18,906 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 28 states. [2020-11-28 02:58:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:20,245 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-11-28 02:58:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-28 02:58:20,246 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2020-11-28 02:58:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:20,247 INFO L225 Difference]: With dead ends: 128 [2020-11-28 02:58:20,247 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 02:58:20,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2020-11-28 02:58:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 02:58:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-11-28 02:58:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-28 02:58:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-11-28 02:58:20,252 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 55 [2020-11-28 02:58:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:20,252 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-11-28 02:58:20,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-28 02:58:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-11-28 02:58:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-28 02:58:20,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:20,254 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:20,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 02:58:20,464 INFO L429 AbstractCegarLoop]: === Iteration 19 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:20,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:20,464 INFO L82 PathProgramCache]: Analyzing trace with hash -714725714, now seen corresponding path program 9 times [2020-11-28 02:58:20,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:20,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24320007] [2020-11-28 02:58:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:20,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24320007] [2020-11-28 02:58:20,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120060231] [2020-11-28 02:58:20,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:20,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-28 02:58:20,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:20,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-28 02:58:20,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:21,007 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 02:58:21,007 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:21,011 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:21,012 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:21,012 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:58:21,036 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 16 treesize of output 12 [2020-11-28 02:58:21,036 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:21,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:21,043 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 02:58:21,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2020-11-28 02:58:21,267 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:21,267 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2020-11-28 02:58:21,268 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-28 02:58:21,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:21,279 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 02:58:21,285 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-11-28 02:58:21,285 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-11-28 02:58:21,362 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-28 02:58:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-11-28 02:58:21,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:21,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 23 [2020-11-28 02:58:21,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050192577] [2020-11-28 02:58:21,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-28 02:58:21,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:21,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-28 02:58:21,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-11-28 02:58:21,495 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 24 states. [2020-11-28 02:58:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:22,602 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-11-28 02:58:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 02:58:22,602 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 59 [2020-11-28 02:58:22,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:22,602 INFO L225 Difference]: With dead ends: 75 [2020-11-28 02:58:22,603 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:22,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2020-11-28 02:58:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:22,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:22,603 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2020-11-28 02:58:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:22,604 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:22,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-28 02:58:22,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:22,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:22,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:22,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:22 BoogieIcfgContainer [2020-11-28 02:58:22,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:22,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:22,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:22,808 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:22,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:02" (3/4) ... [2020-11-28 02:58:22,812 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:22,819 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 02:58:22,819 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrreplace [2020-11-28 02:58:22,819 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-28 02:58:22,820 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-28 02:58:22,820 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-28 02:58:22,820 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-28 02:58:22,820 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 02:58:22,820 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-28 02:58:22,824 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 02:58:22,825 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 02:58:22,825 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:22,825 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:22,880 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_92fa253e-c3f0-4c34-9781-2c33d48fc252/bin/uautomizer/witness.graphml [2020-11-28 02:58:22,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:22,881 INFO L168 Benchmark]: Toolchain (without parser) took 21576.11 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 60.8 MB in the beginning and 57.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 78.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,883 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:22,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.23 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 62.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,884 INFO L168 Benchmark]: Boogie Preprocessor took 68.73 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 60.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,884 INFO L168 Benchmark]: RCFGBuilder took 739.57 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 60.2 MB in the beginning and 81.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,885 INFO L168 Benchmark]: TraceAbstraction took 20153.67 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 80.4 MB in the beginning and 60.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 76.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,885 INFO L168 Benchmark]: Witness Printer took 72.12 ms. Allocated memory is still 172.0 MB. Free memory was 60.4 MB in the beginning and 57.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 536.23 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 62.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.73 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 60.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 739.57 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 60.2 MB in the beginning and 81.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20153.67 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 80.4 MB in the beginning and 60.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 76.1 MB. Max. memory is 16.1 GB. * Witness Printer took 72.12 ms. Allocated memory is still 172.0 MB. Free memory was 60.4 MB in the beginning and 57.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 57 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.0s, OverallIterations: 19, TraceHistogramMax: 5, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 488 SDtfs, 1586 SDslu, 1178 SDs, 0 SdLazy, 6251 SolverSat, 317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 679 GetRequests, 341 SyntacticMatches, 9 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=18, 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, 19 MinimizatonAttempts, 80 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 896 NumberOfCodeBlocks, 896 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 867 ConstructedInterpolants, 44 QuantifiedInterpolants, 278416 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1597 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 221/754 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...