./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_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/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 [2020-11-29 19:09:59,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:09:59,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:09:59,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:09:59,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:09:59,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:09:59,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:09:59,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:09:59,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:09:59,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:09:59,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:09:59,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:09:59,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:09:59,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:09:59,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:09:59,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:09:59,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:09:59,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:09:59,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:09:59,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:09:59,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:09:59,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:09:59,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:09:59,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:09:59,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:09:59,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:09:59,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:09:59,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:09:59,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:10:00,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:10:00,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:10:00,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:10:00,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:10:00,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:10:00,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:10:00,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:10:00,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:10:00,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:10:00,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:10:00,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:10:00,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:10:00,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 19:10:00,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:10:00,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:10:00,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:10:00,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:10:00,045 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:10:00,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:10:00,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:10:00,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:10:00,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:10:00,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:10:00,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:10:00,048 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:10:00,048 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:10:00,048 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:10:00,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:10:00,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 19:10:00,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:10:00,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:10:00,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:10:00,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:10:00,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:10:00,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:10:00,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:10:00,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:10:00,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:10:00,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:10:00,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:10:00,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:10:00,054 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_195ede4b-409c-4774-9987-3aecf5149994/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50bdaf600d03af0a677a59daf6a875dbe69c10b2 [2020-11-29 19:10:00,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:10:00,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:10:00,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:10:00,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:10:00,365 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:10:00,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2020-11-29 19:10:00,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/data/5c7084929/99dc0545aaaf4e80bd0310cfcb9f058f/FLAG5268650d9 [2020-11-29 19:10:01,153 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:10:01,165 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2020-11-29 19:10:01,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/data/5c7084929/99dc0545aaaf4e80bd0310cfcb9f058f/FLAG5268650d9 [2020-11-29 19:10:01,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/data/5c7084929/99dc0545aaaf4e80bd0310cfcb9f058f [2020-11-29 19:10:01,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:10:01,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 19:10:01,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:10:01,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:10:01,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:10:01,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:10:01" (1/1) ... [2020-11-29 19:10:01,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1e7039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:01, skipping insertion in model container [2020-11-29 19:10:01,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:10:01" (1/1) ... [2020-11-29 19:10:01,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:10:01,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:10:01,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:10:01,928 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:10:01,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:10:02,072 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:10:02,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02 WrapperNode [2020-11-29 19:10:02,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:10:02,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:10:02,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:10:02,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:10:02,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (1/1) ... [2020-11-29 19:10:02,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (1/1) ... [2020-11-29 19:10:02,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (1/1) ... [2020-11-29 19:10:02,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (1/1) ... [2020-11-29 19:10:02,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (1/1) ... [2020-11-29 19:10:02,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (1/1) ... [2020-11-29 19:10:02,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (1/1) ... [2020-11-29 19:10:02,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:10:02,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:10:02,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:10:02,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:10:02,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:10:02,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 19:10:02,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:10:02,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 19:10:02,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 19:10:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 19:10:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 19:10:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 19:10:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrreplace [2020-11-29 19:10:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 19:10:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 19:10:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 19:10:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 19:10:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 19:10:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 19:10:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 19:10:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 19:10:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 19:10:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 19:10:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 19:10:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 19:10:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 19:10:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 19:10:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 19:10:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 19:10:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 19:10:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 19:10:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 19:10:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 19:10:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 19:10:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 19:10:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 19:10:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 19:10:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 19:10:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 19:10:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 19:10:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 19:10:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 19:10:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 19:10:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 19:10:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 19:10:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 19:10:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 19:10:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 19:10:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 19:10:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 19:10:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 19:10:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 19:10:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 19:10:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 19:10:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 19:10:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 19:10:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 19:10:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 19:10:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 19:10:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 19:10:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 19:10:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 19:10:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 19:10:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 19:10:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 19:10:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 19:10:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 19:10:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 19:10:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 19:10:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 19:10:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 19:10:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 19:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 19:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 19:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 19:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 19:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 19:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 19:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 19:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 19:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 19:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 19:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 19:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 19:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 19:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 19:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 19:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 19:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 19:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 19:10:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 19:10:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 19:10:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 19:10:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 19:10:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 19:10:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 19:10:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 19:10:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 19:10:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 19:10:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 19:10:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 19:10:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 19:10:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 19:10:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 19:10:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 19:10:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 19:10:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-29 19:10:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure cstrreplace [2020-11-29 19:10:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:10:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:10:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 19:10:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:10:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:10:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 19:10:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:10:03,022 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:10:03,022 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-29 19:10:03,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:03 BoogieIcfgContainer [2020-11-29 19:10:03,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:10:03,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:10:03,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:10:03,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:10:03,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:10:01" (1/3) ... [2020-11-29 19:10:03,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8faef1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:10:03, skipping insertion in model container [2020-11-29 19:10:03,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:02" (2/3) ... [2020-11-29 19:10:03,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8faef1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:10:03, skipping insertion in model container [2020-11-29 19:10:03,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:03" (3/3) ... [2020-11-29 19:10:03,043 INFO L111 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2020-11-29 19:10:03,059 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:10:03,066 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-29 19:10:03,080 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-29 19:10:03,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:10:03,112 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 19:10:03,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:10:03,119 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:10:03,119 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:10:03,144 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:10:03,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:10:03,145 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:10:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-11-29 19:10:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:10:03,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:03,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:03,183 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]=== [2020-11-29 19:10:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:03,192 INFO L82 PathProgramCache]: Analyzing trace with hash -610270170, now seen corresponding path program 1 times [2020-11-29 19:10:03,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:03,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475166829] [2020-11-29 19:10:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:03,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475166829] [2020-11-29 19:10:03,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:03,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:10:03,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163442357] [2020-11-29 19:10:03,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:10:03,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:03,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:10:03,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:10:03,521 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-11-29 19:10:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:03,686 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-11-29 19:10:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:10:03,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:10:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:03,711 INFO L225 Difference]: With dead ends: 40 [2020-11-29 19:10:03,712 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 19:10:03,718 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 [2020-11-29 19:10:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 19:10:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 19:10:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 19:10:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-29 19:10:03,757 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2020-11-29 19:10:03,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:03,757 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-29 19:10:03,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:10:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-29 19:10:03,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:10:03,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:03,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:03,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:10:03,759 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]=== [2020-11-29 19:10:03,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash -610270169, now seen corresponding path program 1 times [2020-11-29 19:10:03,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:03,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282393632] [2020-11-29 19:10:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:03,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282393632] [2020-11-29 19:10:03,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:03,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:10:03,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897626214] [2020-11-29 19:10:03,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:10:03,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:03,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:10:03,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:10:03,924 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2020-11-29 19:10:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:04,052 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-11-29 19:10:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:10:04,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 19:10:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:04,054 INFO L225 Difference]: With dead ends: 36 [2020-11-29 19:10:04,054 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 19:10:04,055 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 [2020-11-29 19:10:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 19:10:04,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-29 19:10:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 19:10:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-29 19:10:04,062 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2020-11-29 19:10:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:04,063 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-29 19:10:04,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:10:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-29 19:10:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:10:04,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:04,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:04,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:10:04,065 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]=== [2020-11-29 19:10:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash -610270116, now seen corresponding path program 1 times [2020-11-29 19:10:04,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:04,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46357846] [2020-11-29 19:10:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:04,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46357846] [2020-11-29 19:10:04,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:04,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:10:04,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238625237] [2020-11-29 19:10:04,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:10:04,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:04,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:10:04,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:10:04,191 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2020-11-29 19:10:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:04,334 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-29 19:10:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:10:04,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 19:10:04,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:04,337 INFO L225 Difference]: With dead ends: 44 [2020-11-29 19:10:04,337 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 19:10:04,338 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 [2020-11-29 19:10:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 19:10:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-11-29 19:10:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:10:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-29 19:10:04,349 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2020-11-29 19:10:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:04,349 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-29 19:10:04,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:10:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-29 19:10:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:10:04,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:04,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:04,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:10:04,351 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]=== [2020-11-29 19:10:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:04,352 INFO L82 PathProgramCache]: Analyzing trace with hash -610210534, now seen corresponding path program 1 times [2020-11-29 19:10:04,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:04,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446116704] [2020-11-29 19:10:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:04,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:04,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446116704] [2020-11-29 19:10:04,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:04,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:10:04,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895349689] [2020-11-29 19:10:04,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:10:04,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:04,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:10:04,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:10:04,477 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2020-11-29 19:10:04,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:04,674 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-11-29 19:10:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:10:04,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 19:10:04,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:04,676 INFO L225 Difference]: With dead ends: 48 [2020-11-29 19:10:04,676 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 19:10:04,677 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 [2020-11-29 19:10:04,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 19:10:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-11-29 19:10:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 19:10:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-29 19:10:04,688 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 10 [2020-11-29 19:10:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:04,688 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-29 19:10:04,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:10:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-29 19:10:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:10:04,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:04,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:04,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:10:04,690 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]=== [2020-11-29 19:10:04,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:04,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041719, now seen corresponding path program 1 times [2020-11-29 19:10:04,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:04,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057768744] [2020-11-29 19:10:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:04,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057768744] [2020-11-29 19:10:04,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:04,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:10:04,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971599385] [2020-11-29 19:10:04,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:10:04,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:04,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:10:04,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:10:04,800 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2020-11-29 19:10:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:04,987 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-11-29 19:10:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:10:04,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 19:10:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:04,989 INFO L225 Difference]: With dead ends: 37 [2020-11-29 19:10:04,989 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 19:10:04,989 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 [2020-11-29 19:10:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 19:10:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 19:10:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 19:10:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-29 19:10:04,995 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 14 [2020-11-29 19:10:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:04,996 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-29 19:10:04,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:10:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-29 19:10:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:10:04,997 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:04,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:04,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:10:04,998 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]=== [2020-11-29 19:10:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:04,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041720, now seen corresponding path program 1 times [2020-11-29 19:10:04,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:04,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445707853] [2020-11-29 19:10:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:05,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445707853] [2020-11-29 19:10:05,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:05,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:10:05,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074746508] [2020-11-29 19:10:05,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:10:05,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:05,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:10:05,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:10:05,184 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-11-29 19:10:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:05,463 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-11-29 19:10:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:10:05,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-29 19:10:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:05,466 INFO L225 Difference]: With dead ends: 47 [2020-11-29 19:10:05,466 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 19:10:05,467 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 [2020-11-29 19:10:05,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 19:10:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2020-11-29 19:10:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 19:10:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-11-29 19:10:05,474 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 14 [2020-11-29 19:10:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:05,474 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-29 19:10:05,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:10:05,475 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-11-29 19:10:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:10:05,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:05,476 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:05,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:10:05,476 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]=== [2020-11-29 19:10:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:05,477 INFO L82 PathProgramCache]: Analyzing trace with hash 415323869, now seen corresponding path program 1 times [2020-11-29 19:10:05,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:05,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155652399] [2020-11-29 19:10:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:05,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:05,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155652399] [2020-11-29 19:10:05,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638268204] [2020-11-29 19:10:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:05,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:10:05,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:05,907 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 [2020-11-29 19:10:05,908 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:05,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:05,918 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:10:05,919 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-29 19:10:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:06,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:06,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-11-29 19:10:06,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107280391] [2020-11-29 19:10:06,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:10:06,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:06,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:10:06,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:10:06,110 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2020-11-29 19:10:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:06,290 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-11-29 19:10:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:10:06,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-29 19:10:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:06,292 INFO L225 Difference]: With dead ends: 49 [2020-11-29 19:10:06,292 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 19:10:06,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:10:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 19:10:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-11-29 19:10:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 19:10:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-11-29 19:10:06,297 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2020-11-29 19:10:06,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:06,298 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-11-29 19:10:06,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:10:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-11-29 19:10:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:10:06,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:06,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:06,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 19:10:06,500 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]=== [2020-11-29 19:10:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:06,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1580673573, now seen corresponding path program 1 times [2020-11-29 19:10:06,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:06,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575589146] [2020-11-29 19:10:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:06,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:06,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575589146] [2020-11-29 19:10:06,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:06,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 19:10:06,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88930283] [2020-11-29 19:10:06,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:10:06,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:06,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:10:06,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:10:06,781 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-11-29 19:10:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:07,060 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-29 19:10:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:10:07,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-11-29 19:10:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:07,062 INFO L225 Difference]: With dead ends: 51 [2020-11-29 19:10:07,062 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 19:10:07,062 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 [2020-11-29 19:10:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 19:10:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-11-29 19:10:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 19:10:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-11-29 19:10:07,068 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19 [2020-11-29 19:10:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:07,068 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-11-29 19:10:07,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:10:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-11-29 19:10:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:10:07,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:07,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:07,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:10:07,070 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]=== [2020-11-29 19:10:07,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:07,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2127487709, now seen corresponding path program 1 times [2020-11-29 19:10:07,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:07,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091065273] [2020-11-29 19:10:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:07,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091065273] [2020-11-29 19:10:07,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:07,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 19:10:07,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094732318] [2020-11-29 19:10:07,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:10:07,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:07,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:10:07,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:10:07,351 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 10 states. [2020-11-29 19:10:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:07,702 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-11-29 19:10:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:10:07,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-29 19:10:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:07,703 INFO L225 Difference]: With dead ends: 64 [2020-11-29 19:10:07,704 INFO L226 Difference]: Without dead ends: 64 [2020-11-29 19:10:07,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:10:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-29 19:10:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-11-29 19:10:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 19:10:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-11-29 19:10:07,710 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2020-11-29 19:10:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:07,711 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-11-29 19:10:07,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:10:07,711 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-11-29 19:10:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:10:07,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:07,712 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] [2020-11-29 19:10:07,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:10:07,712 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]=== [2020-11-29 19:10:07,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:07,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1797581199, now seen corresponding path program 1 times [2020-11-29 19:10:07,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:07,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863074226] [2020-11-29 19:10:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:07,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-29 19:10:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:07,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863074226] [2020-11-29 19:10:07,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:07,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:10:07,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414720741] [2020-11-29 19:10:07,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:10:07,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:07,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:10:07,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:10:07,875 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 6 states. [2020-11-29 19:10:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:08,024 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-11-29 19:10:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:10:08,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 19:10:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:08,026 INFO L225 Difference]: With dead ends: 61 [2020-11-29 19:10:08,026 INFO L226 Difference]: Without dead ends: 42 [2020-11-29 19:10:08,026 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 [2020-11-29 19:10:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-29 19:10:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-11-29 19:10:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 19:10:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-11-29 19:10:08,030 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2020-11-29 19:10:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:08,030 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-11-29 19:10:08,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:10:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-11-29 19:10:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:10:08,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:08,031 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] [2020-11-29 19:10:08,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:10:08,032 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]=== [2020-11-29 19:10:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash 956679290, now seen corresponding path program 1 times [2020-11-29 19:10:08,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:08,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458753087] [2020-11-29 19:10:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:08,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458753087] [2020-11-29 19:10:08,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002763878] [2020-11-29 19:10:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:08,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 19:10:08,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:08,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:08,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-29 19:10:08,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261037189] [2020-11-29 19:10:08,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 19:10:08,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:08,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 19:10:08,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:10:08,621 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 14 states. [2020-11-29 19:10:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:08,982 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-29 19:10:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:10:08,982 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-11-29 19:10:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:08,983 INFO L225 Difference]: With dead ends: 44 [2020-11-29 19:10:08,983 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 19:10:08,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:10:08,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 19:10:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-11-29 19:10:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 19:10:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-11-29 19:10:08,990 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 23 [2020-11-29 19:10:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:08,991 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-11-29 19:10:08,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 19:10:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-11-29 19:10:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 19:10:08,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:08,994 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] [2020-11-29 19:10:09,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:09,206 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]=== [2020-11-29 19:10:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:09,206 INFO L82 PathProgramCache]: Analyzing trace with hash -403117159, now seen corresponding path program 2 times [2020-11-29 19:10:09,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:09,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992048240] [2020-11-29 19:10:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:09,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:09,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992048240] [2020-11-29 19:10:09,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754567036] [2020-11-29 19:10:09,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:09,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:10:09,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:09,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 19:10:09,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:09,967 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 [2020-11-29 19:10:09,968 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:09,984 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:09,987 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. [2020-11-29 19:10:09,987 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-11-29 19:10:10,283 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 [2020-11-29 19:10:10,284 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:10,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:10,287 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:10:10,287 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-11-29 19:10:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:10,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:10,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-11-29 19:10:10,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391527312] [2020-11-29 19:10:10,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 19:10:10,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:10,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 19:10:10,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:10:10,294 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 19 states. [2020-11-29 19:10:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:11,010 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-11-29 19:10:11,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:10:11,010 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-11-29 19:10:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:11,011 INFO L225 Difference]: With dead ends: 59 [2020-11-29 19:10:11,011 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 19:10:11,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2020-11-29 19:10:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 19:10:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-11-29 19:10:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 19:10:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-11-29 19:10:11,016 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 28 [2020-11-29 19:10:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:11,016 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-11-29 19:10:11,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 19:10:11,017 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-11-29 19:10:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 19:10:11,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:11,018 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] [2020-11-29 19:10:11,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 19:10:11,230 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]=== [2020-11-29 19:10:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:11,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1476818276, now seen corresponding path program 3 times [2020-11-29 19:10:11,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:11,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717865128] [2020-11-29 19:10:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:11,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717865128] [2020-11-29 19:10:11,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196864951] [2020-11-29 19:10:11,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:11,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 19:10:11,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:11,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 19:10:11,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:11,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:11,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-11-29 19:10:11,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275104781] [2020-11-29 19:10:11,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 19:10:11,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:11,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 19:10:11,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:10:11,819 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 19 states. [2020-11-29 19:10:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:12,368 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-11-29 19:10:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:10:12,369 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2020-11-29 19:10:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:12,370 INFO L225 Difference]: With dead ends: 52 [2020-11-29 19:10:12,370 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 19:10:12,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:10:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 19:10:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-11-29 19:10:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 19:10:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-11-29 19:10:12,376 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 32 [2020-11-29 19:10:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:12,377 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-11-29 19:10:12,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 19:10:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-11-29 19:10:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 19:10:12,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:12,379 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] [2020-11-29 19:10:12,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:12,598 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]=== [2020-11-29 19:10:12,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash -227169609, now seen corresponding path program 4 times [2020-11-29 19:10:12,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:12,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501439867] [2020-11-29 19:10:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:12,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501439867] [2020-11-29 19:10:12,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386416760] [2020-11-29 19:10:12,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:13,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:10:13,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:13,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-29 19:10:13,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:13,113 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 [2020-11-29 19:10:13,113 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:13,122 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:13,122 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:10:13,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-29 19:10:13,302 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 [2020-11-29 19:10:13,303 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:13,308 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:13,309 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:10:13,309 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-11-29 19:10:13,599 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 [2020-11-29 19:10:13,601 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 19:10:13,616 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:13,622 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:10:13,624 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:13,625 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 [2020-11-29 19:10:13,625 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:13,650 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:13,652 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. [2020-11-29 19:10:13,652 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2020-11-29 19:10:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:13,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:13,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-11-29 19:10:13,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531156234] [2020-11-29 19:10:13,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 19:10:13,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:13,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 19:10:13,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:10:13,661 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 24 states. [2020-11-29 19:10:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:15,194 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2020-11-29 19:10:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 19:10:15,194 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 37 [2020-11-29 19:10:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:15,195 INFO L225 Difference]: With dead ends: 89 [2020-11-29 19:10:15,195 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 19:10:15,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 19:10:15,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 19:10:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-11-29 19:10:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 19:10:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-29 19:10:15,201 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 37 [2020-11-29 19:10:15,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:15,201 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-29 19:10:15,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 19:10:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-29 19:10:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 19:10:15,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:15,203 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] [2020-11-29 19:10:15,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 19:10:15,418 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]=== [2020-11-29 19:10:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1399570668, now seen corresponding path program 5 times [2020-11-29 19:10:15,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:15,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060739351] [2020-11-29 19:10:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:15,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060739351] [2020-11-29 19:10:15,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481448530] [2020-11-29 19:10:15,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:15,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-29 19:10:15,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:15,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-29 19:10:15,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:15,861 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 [2020-11-29 19:10:15,861 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:15,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:15,868 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:10:15,868 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-29 19:10:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:16,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:16,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-11-29 19:10:16,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140951382] [2020-11-29 19:10:16,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 19:10:16,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:16,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 19:10:16,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:10:16,024 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 16 states. [2020-11-29 19:10:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:16,578 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-29 19:10:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:10:16,578 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-11-29 19:10:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:16,579 INFO L225 Difference]: With dead ends: 63 [2020-11-29 19:10:16,579 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 19:10:16,579 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 [2020-11-29 19:10:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 19:10:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-11-29 19:10:16,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 19:10:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-11-29 19:10:16,584 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 41 [2020-11-29 19:10:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:16,585 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-11-29 19:10:16,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 19:10:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-11-29 19:10:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 19:10:16,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:16,587 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] [2020-11-29 19:10:16,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:16,806 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]=== [2020-11-29 19:10:16,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:16,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1288634049, now seen corresponding path program 6 times [2020-11-29 19:10:16,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:16,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364127843] [2020-11-29 19:10:16,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:17,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364127843] [2020-11-29 19:10:17,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8935697] [2020-11-29 19:10:17,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:17,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-29 19:10:17,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:17,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-29 19:10:17,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:17,604 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 [2020-11-29 19:10:17,605 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:17,614 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:17,615 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. [2020-11-29 19:10:17,615 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-11-29 19:10:17,854 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 [2020-11-29 19:10:17,855 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:17,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:17,866 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:10:17,866 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-29 19:10:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:17,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:17,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2020-11-29 19:10:17,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61117453] [2020-11-29 19:10:17,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-29 19:10:17,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:17,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-29 19:10:17,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-11-29 19:10:17,874 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 25 states. [2020-11-29 19:10:18,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:18,824 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-11-29 19:10:18,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 19:10:18,825 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-11-29 19:10:18,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:18,825 INFO L225 Difference]: With dead ends: 104 [2020-11-29 19:10:18,826 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 19:10:18,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 19:10:18,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 19:10:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-11-29 19:10:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 19:10:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-11-29 19:10:18,832 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 46 [2020-11-29 19:10:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:18,832 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-11-29 19:10:18,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-29 19:10:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-11-29 19:10:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-29 19:10:18,834 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:18,835 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] [2020-11-29 19:10:19,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 19:10:19,050 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]=== [2020-11-29 19:10:19,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1360591486, now seen corresponding path program 7 times [2020-11-29 19:10:19,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:19,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164975113] [2020-11-29 19:10:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:19,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164975113] [2020-11-29 19:10:19,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346535550] [2020-11-29 19:10:19,407 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:19,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 19:10:19,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:19,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:19,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2020-11-29 19:10:19,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726595593] [2020-11-29 19:10:19,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-29 19:10:19,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:19,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-29 19:10:19,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-11-29 19:10:19,898 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 23 states. [2020-11-29 19:10:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:20,867 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-29 19:10:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 19:10:20,868 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-11-29 19:10:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:20,868 INFO L225 Difference]: With dead ends: 74 [2020-11-29 19:10:20,869 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 19:10:20,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2020-11-29 19:10:20,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 19:10:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-11-29 19:10:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 19:10:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-11-29 19:10:20,873 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 50 [2020-11-29 19:10:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:20,873 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-11-29 19:10:20,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-29 19:10:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-11-29 19:10:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-29 19:10:20,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:20,875 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] [2020-11-29 19:10:21,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 19:10:21,075 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]=== [2020-11-29 19:10:21,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:21,076 INFO L82 PathProgramCache]: Analyzing trace with hash -278982767, now seen corresponding path program 8 times [2020-11-29 19:10:21,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:21,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164968885] [2020-11-29 19:10:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:21,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164968885] [2020-11-29 19:10:21,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687862348] [2020-11-29 19:10:21,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:21,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:10:21,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:21,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 19:10:21,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:21,995 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 [2020-11-29 19:10:21,996 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:22,005 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:22,006 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. [2020-11-29 19:10:22,006 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-11-29 19:10:22,286 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 [2020-11-29 19:10:22,286 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:22,299 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:22,299 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:10:22,299 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-29 19:10:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:22,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:22,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 28 [2020-11-29 19:10:22,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712652457] [2020-11-29 19:10:22,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 19:10:22,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:22,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 19:10:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-11-29 19:10:22,313 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 28 states. [2020-11-29 19:10:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:24,048 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-11-29 19:10:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 19:10:24,049 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2020-11-29 19:10:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:24,050 INFO L225 Difference]: With dead ends: 128 [2020-11-29 19:10:24,050 INFO L226 Difference]: Without dead ends: 79 [2020-11-29 19:10:24,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 19:10:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-29 19:10:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-11-29 19:10:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-29 19:10:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-11-29 19:10:24,055 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 55 [2020-11-29 19:10:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:24,056 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-11-29 19:10:24,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 19:10:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-11-29 19:10:24,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 19:10:24,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:24,057 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] [2020-11-29 19:10:24,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 19:10:24,270 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]=== [2020-11-29 19:10:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:24,270 INFO L82 PathProgramCache]: Analyzing trace with hash -714725714, now seen corresponding path program 9 times [2020-11-29 19:10:24,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:24,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286843367] [2020-11-29 19:10:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:10:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:24,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286843367] [2020-11-29 19:10:24,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838004579] [2020-11-29 19:10:24,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:24,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-29 19:10:24,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:24,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-29 19:10:24,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:24,803 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 [2020-11-29 19:10:24,804 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:24,808 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:24,809 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:10:24,809 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 19:10:24,857 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 [2020-11-29 19:10:24,858 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:10:24,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:24,866 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. [2020-11-29 19:10:24,866 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2020-11-29 19:10:25,075 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:25,076 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 [2020-11-29 19:10:25,077 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-29 19:10:25,092 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:10:25,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:10:25,097 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-11-29 19:10:25,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-11-29 19:10:25,135 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 19:10:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-11-29 19:10:25,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:10:25,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 23 [2020-11-29 19:10:25,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250246564] [2020-11-29 19:10:25,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 19:10:25,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:25,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 19:10:25,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:10:25,285 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 24 states. [2020-11-29 19:10:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:26,618 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-11-29 19:10:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 19:10:26,619 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 59 [2020-11-29 19:10:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:26,619 INFO L225 Difference]: With dead ends: 75 [2020-11-29 19:10:26,619 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:10:26,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 19:10:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:10:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:10:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:10:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:10:26,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2020-11-29 19:10:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:26,621 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:10:26,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 19:10:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:10:26,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:10:26,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:26,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:10:26 BoogieIcfgContainer [2020-11-29 19:10:26,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:10:26,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:10:26,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:10:26,835 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:10:26,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:03" (3/4) ... [2020-11-29 19:10:26,846 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:10:26,854 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 19:10:26,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrreplace [2020-11-29 19:10:26,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-29 19:10:26,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-29 19:10:26,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-29 19:10:26,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-29 19:10:26,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 19:10:26,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-29 19:10:26,867 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 19:10:26,868 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 19:10:26,868 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:10:26,868 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:10:26,916 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_195ede4b-409c-4774-9987-3aecf5149994/bin/uautomizer/witness.graphml [2020-11-29 19:10:26,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:10:26,918 INFO L168 Benchmark]: Toolchain (without parser) took 25550.56 ms. Allocated memory was 113.2 MB in the beginning and 343.9 MB in the end (delta: 230.7 MB). Free memory was 82.5 MB in the beginning and 306.4 MB in the end (delta: -223.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:26,919 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 38.3 MB in the beginning and 38.3 MB in the end (delta: 38.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:10:26,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.01 ms. Allocated memory is still 113.2 MB. Free memory was 82.5 MB in the beginning and 79.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:26,920 INFO L168 Benchmark]: Boogie Preprocessor took 114.37 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 77.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:26,921 INFO L168 Benchmark]: RCFGBuilder took 833.24 ms. Allocated memory is still 113.2 MB. Free memory was 77.8 MB in the beginning and 38.7 MB in the end (delta: 39.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:26,921 INFO L168 Benchmark]: TraceAbstraction took 23803.51 ms. Allocated memory was 113.2 MB in the beginning and 343.9 MB in the end (delta: 230.7 MB). Free memory was 38.0 MB in the beginning and 310.0 MB in the end (delta: -272.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:10:26,922 INFO L168 Benchmark]: Witness Printer took 82.59 ms. Allocated memory is still 343.9 MB. Free memory was 310.0 MB in the beginning and 306.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:26,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 38.3 MB in the beginning and 38.3 MB in the end (delta: 38.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 707.01 ms. Allocated memory is still 113.2 MB. Free memory was 82.5 MB in the beginning and 79.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 114.37 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 77.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 833.24 ms. Allocated memory is still 113.2 MB. Free memory was 77.8 MB in the beginning and 38.7 MB in the end (delta: 39.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23803.51 ms. Allocated memory was 113.2 MB in the beginning and 343.9 MB in the end (delta: 230.7 MB). Free memory was 38.0 MB in the beginning and 310.0 MB in the end (delta: -272.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 82.59 ms. Allocated memory is still 343.9 MB. Free memory was 310.0 MB in the beginning and 306.4 MB in the end (delta: 3.6 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: 23.7s, OverallIterations: 19, TraceHistogramMax: 5, AutomataDifference: 10.8s, 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, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 679 GetRequests, 341 SyntacticMatches, 9 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 9.2s 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, 0.8s SatisfiabilityAnalysisTime, 7.8s 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...