./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext.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_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/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 0539ac658883b1641a4574e23a99ec21471d0b6a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/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 0539ac658883b1641a4574e23a99ec21471d0b6a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:17:42,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:42,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:43,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:43,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:43,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:43,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:43,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:43,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:43,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:43,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:43,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:43,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:43,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:43,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:43,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:43,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:43,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:43,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:43,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:43,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:43,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:43,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:43,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:43,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:43,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:43,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:43,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:43,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:43,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:43,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:43,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:43,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:43,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:43,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:43,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:43,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:43,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:43,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:43,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:43,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:43,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:17:43,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:43,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:43,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:43,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:43,172 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:43,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:43,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:17:43,172 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:17:43,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:17:43,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:17:43,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:43,175 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:17:43,175 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:17:43,175 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:17:43,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:17:43,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:17:43,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:17:43,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:43,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:43,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:43,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:17:43,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:17:43,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:17:43,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:43,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:17:43,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:17:43,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:17:43,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:43,179 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_cae026fa-978b-4fe7-a909-4212f7b3410d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-11-28 03:17:43,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:43,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:43,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:43,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:43,463 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:43,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-28 03:17:43,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data/25437e8e9/ddbb54bed62c4bd29230b85ccb0091e9/FLAG76a69b708 [2020-11-28 03:17:44,144 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:44,144 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-28 03:17:44,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data/25437e8e9/ddbb54bed62c4bd29230b85ccb0091e9/FLAG76a69b708 [2020-11-28 03:17:44,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data/25437e8e9/ddbb54bed62c4bd29230b85ccb0091e9 [2020-11-28 03:17:44,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:44,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:17:44,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:44,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:44,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:44,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:44,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d32a30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44, skipping insertion in model container [2020-11-28 03:17:44,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:44,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:44,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:44,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:44,858 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:44,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:44,982 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:44,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44 WrapperNode [2020-11-28 03:17:44,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:44,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:44,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:44,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:44,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:44,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:45,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:45,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:45,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:45,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:45,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (1/1) ... [2020-11-28 03:17:45,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:45,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:45,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:45,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:45,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:17:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:17:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:17:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:17:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:17:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:17:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:17:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:17:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:17:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:17:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:17:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:17:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:17:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:17:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:17:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:17:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:17:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:17:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:17:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:17:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:17:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:17:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:17:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:17:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:17:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:17:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:17:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:17:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:17:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:17:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:17:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:17:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:17:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:17:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:17:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:17:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:17:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:17:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:17:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:17:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:17:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:17:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:17:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:17:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:17:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:17:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:17:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:17:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:17:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:17:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:17:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:17:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:17:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:17:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:17:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:17:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:17:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:17:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:17:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:17:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:17:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:17:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:17:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:17:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:17:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:17:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:17:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:17:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:17:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:17:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:17:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:17:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:17:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:17:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:17:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:17:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:17:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:17:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:17:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:17:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:17:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:17:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:17:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:17:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:17:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:17:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:17:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:17:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:17:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:17:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:17:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:17:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:17:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:17:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:17:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:17:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:17:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:17:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:17:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:17:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:17:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:17:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:17:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:17:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:17:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:17:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:17:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:17:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:17:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:17:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:17:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:17:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:17:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:17:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:17:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:17:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:17:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:17:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:17:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:17:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:17:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:17:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:17:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:17:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:17:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:17:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:17:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:17:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:17:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:17:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:17:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:17:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:17:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:45,646 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:17:45,991 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:45,991 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:17:45,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:45 BoogieIcfgContainer [2020-11-28 03:17:45,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:45,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:17:45,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:17:45,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:17:46,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:17:44" (1/3) ... [2020-11-28 03:17:46,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfac231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:46, skipping insertion in model container [2020-11-28 03:17:46,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:44" (2/3) ... [2020-11-28 03:17:46,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfac231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:46, skipping insertion in model container [2020-11-28 03:17:46,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:45" (3/3) ... [2020-11-28 03:17:46,010 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-11-28 03:17:46,021 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:17:46,027 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-28 03:17:46,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-28 03:17:46,057 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:17:46,057 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:17:46,057 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:17:46,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:46,058 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:46,058 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:17:46,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:46,058 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:17:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-11-28 03:17:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:17:46,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:46,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:46,084 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:46,090 INFO L82 PathProgramCache]: Analyzing trace with hash -849411233, now seen corresponding path program 1 times [2020-11-28 03:17:46,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:46,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584287230] [2020-11-28 03:17:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:46,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584287230] [2020-11-28 03:17:46,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:46,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:17:46,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388410360] [2020-11-28 03:17:46,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:17:46,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:46,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:17:46,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:17:46,374 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-11-28 03:17:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:46,675 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-11-28 03:17:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:17:46,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 03:17:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:46,684 INFO L225 Difference]: With dead ends: 100 [2020-11-28 03:17:46,685 INFO L226 Difference]: Without dead ends: 92 [2020-11-28 03:17:46,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:17:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-28 03:17:46,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-11-28 03:17:46,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-28 03:17:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-11-28 03:17:46,723 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 11 [2020-11-28 03:17:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:46,723 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-11-28 03:17:46,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:17:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-11-28 03:17:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:17:46,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:46,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:46,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:17:46,725 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:46,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:46,726 INFO L82 PathProgramCache]: Analyzing trace with hash -562931253, now seen corresponding path program 1 times [2020-11-28 03:17:46,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:46,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533865198] [2020-11-28 03:17:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:46,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533865198] [2020-11-28 03:17:46,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:46,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:17:46,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388486713] [2020-11-28 03:17:46,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:17:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:17:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:17:46,862 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 5 states. [2020-11-28 03:17:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:47,212 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2020-11-28 03:17:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:17:47,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:17:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:47,214 INFO L225 Difference]: With dead ends: 113 [2020-11-28 03:17:47,214 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 03:17:47,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:17:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 03:17:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2020-11-28 03:17:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-28 03:17:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-11-28 03:17:47,226 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 12 [2020-11-28 03:17:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:47,226 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-11-28 03:17:47,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:17:47,226 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-11-28 03:17:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:17:47,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:47,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:47,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:17:47,227 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:47,228 INFO L82 PathProgramCache]: Analyzing trace with hash -562931252, now seen corresponding path program 1 times [2020-11-28 03:17:47,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:47,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004710797] [2020-11-28 03:17:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:47,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004710797] [2020-11-28 03:17:47,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:47,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:17:47,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438941352] [2020-11-28 03:17:47,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:17:47,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:47,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:17:47,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:17:47,351 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 5 states. [2020-11-28 03:17:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:47,743 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-11-28 03:17:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:17:47,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:17:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:47,746 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:17:47,746 INFO L226 Difference]: Without dead ends: 129 [2020-11-28 03:17:47,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:17:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-28 03:17:47,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-11-28 03:17:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-28 03:17:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-11-28 03:17:47,768 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 12 [2020-11-28 03:17:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:47,769 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-11-28 03:17:47,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:17:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-11-28 03:17:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:17:47,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:47,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:47,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:17:47,771 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:47,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887182, now seen corresponding path program 1 times [2020-11-28 03:17:47,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:47,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551656708] [2020-11-28 03:17:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:47,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551656708] [2020-11-28 03:17:47,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:47,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:17:47,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108579852] [2020-11-28 03:17:47,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:17:47,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:47,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:17:47,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:17:47,962 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2020-11-28 03:17:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:48,508 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-11-28 03:17:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:17:48,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-28 03:17:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:48,510 INFO L225 Difference]: With dead ends: 157 [2020-11-28 03:17:48,511 INFO L226 Difference]: Without dead ends: 157 [2020-11-28 03:17:48,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:17:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-28 03:17:48,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2020-11-28 03:17:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-28 03:17:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-11-28 03:17:48,525 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 21 [2020-11-28 03:17:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:48,526 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-11-28 03:17:48,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:17:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-11-28 03:17:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:17:48,529 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:48,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:48,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:17:48,530 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:48,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887181, now seen corresponding path program 1 times [2020-11-28 03:17:48,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:48,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154233636] [2020-11-28 03:17:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:48,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:48,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154233636] [2020-11-28 03:17:48,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:48,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:17:48,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418357563] [2020-11-28 03:17:48,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:17:48,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:48,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:17:48,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:17:48,684 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 7 states. [2020-11-28 03:17:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:49,362 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-11-28 03:17:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:17:49,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-28 03:17:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:49,363 INFO L225 Difference]: With dead ends: 160 [2020-11-28 03:17:49,363 INFO L226 Difference]: Without dead ends: 160 [2020-11-28 03:17:49,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:17:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-28 03:17:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 101. [2020-11-28 03:17:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-28 03:17:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-11-28 03:17:49,374 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 21 [2020-11-28 03:17:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:49,375 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-11-28 03:17:49,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:17:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-11-28 03:17:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:17:49,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:49,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:49,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:17:49,376 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:49,377 INFO L82 PathProgramCache]: Analyzing trace with hash -517016407, now seen corresponding path program 1 times [2020-11-28 03:17:49,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:49,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290415437] [2020-11-28 03:17:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:49,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290415437] [2020-11-28 03:17:49,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:49,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:17:49,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619241295] [2020-11-28 03:17:49,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:17:49,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:49,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:17:49,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:17:49,530 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 8 states. [2020-11-28 03:17:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:49,915 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-11-28 03:17:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:17:49,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-11-28 03:17:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:49,917 INFO L225 Difference]: With dead ends: 190 [2020-11-28 03:17:49,917 INFO L226 Difference]: Without dead ends: 190 [2020-11-28 03:17:49,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:17:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-11-28 03:17:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2020-11-28 03:17:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 03:17:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-11-28 03:17:49,930 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 22 [2020-11-28 03:17:49,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:49,931 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-11-28 03:17:49,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:17:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-11-28 03:17:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:17:49,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:49,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:49,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:17:49,939 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:49,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1315861814, now seen corresponding path program 1 times [2020-11-28 03:17:49,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:49,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68140746] [2020-11-28 03:17:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:50,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68140746] [2020-11-28 03:17:50,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:50,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:17:50,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780418620] [2020-11-28 03:17:50,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:17:50,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:50,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:17:50,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:17:50,073 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 8 states. [2020-11-28 03:17:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:50,420 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2020-11-28 03:17:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:17:50,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-11-28 03:17:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:50,421 INFO L225 Difference]: With dead ends: 176 [2020-11-28 03:17:50,421 INFO L226 Difference]: Without dead ends: 176 [2020-11-28 03:17:50,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:17:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-28 03:17:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 114. [2020-11-28 03:17:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-28 03:17:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-11-28 03:17:50,428 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 24 [2020-11-28 03:17:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:50,428 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-11-28 03:17:50,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:17:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-11-28 03:17:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:17:50,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:50,430 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:50,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:17:50,430 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956336, now seen corresponding path program 1 times [2020-11-28 03:17:50,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:50,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270113274] [2020-11-28 03:17:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:50,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270113274] [2020-11-28 03:17:50,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:50,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:17:50,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899532405] [2020-11-28 03:17:50,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:17:50,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:17:50,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:17:50,532 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 7 states. [2020-11-28 03:17:50,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:50,934 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2020-11-28 03:17:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:17:50,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-28 03:17:50,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:50,935 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:17:50,935 INFO L226 Difference]: Without dead ends: 129 [2020-11-28 03:17:50,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:17:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-28 03:17:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2020-11-28 03:17:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 03:17:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-11-28 03:17:50,940 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 24 [2020-11-28 03:17:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:50,941 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-11-28 03:17:50,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:17:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-11-28 03:17:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:17:50,942 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:50,942 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:50,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:17:50,942 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:50,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:50,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956337, now seen corresponding path program 1 times [2020-11-28 03:17:50,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:50,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375791181] [2020-11-28 03:17:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:17:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:51,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375791181] [2020-11-28 03:17:51,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:51,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:17:51,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595602961] [2020-11-28 03:17:51,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:17:51,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:51,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:17:51,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:17:51,050 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 7 states. [2020-11-28 03:17:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:51,559 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-11-28 03:17:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:17:51,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-28 03:17:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:51,560 INFO L225 Difference]: With dead ends: 127 [2020-11-28 03:17:51,560 INFO L226 Difference]: Without dead ends: 127 [2020-11-28 03:17:51,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:17:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-28 03:17:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2020-11-28 03:17:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:17:51,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-11-28 03:17:51,565 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 24 [2020-11-28 03:17:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:51,565 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-11-28 03:17:51,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:17:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-11-28 03:17:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:17:51,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:51,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:51,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:17:51,567 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1772362976, now seen corresponding path program 1 times [2020-11-28 03:17:51,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:51,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850891012] [2020-11-28 03:17:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:51,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:51,595 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:51,647 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:51,648 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:17:51,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:17:51,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:17:51 BoogieIcfgContainer [2020-11-28 03:17:51,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:17:51,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:51,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:51,696 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:51,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:45" (3/4) ... [2020-11-28 03:17:51,699 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:17:51,699 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:51,702 INFO L168 Benchmark]: Toolchain (without parser) took 7275.29 ms. Allocated memory was 83.9 MB in the beginning and 163.6 MB in the end (delta: 79.7 MB). Free memory was 51.3 MB in the beginning and 79.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:51,703 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 43.5 MB in the beginning and 43.5 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:51,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.69 ms. Allocated memory is still 83.9 MB. Free memory was 51.1 MB in the beginning and 49.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:51,705 INFO L168 Benchmark]: Boogie Preprocessor took 116.41 ms. Allocated memory is still 83.9 MB. Free memory was 49.5 MB in the beginning and 46.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:51,708 INFO L168 Benchmark]: RCFGBuilder took 890.18 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.7 MB in the beginning and 38.5 MB in the end (delta: 8.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:51,712 INFO L168 Benchmark]: TraceAbstraction took 5699.74 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 38.5 MB in the beginning and 80.9 MB in the end (delta: -42.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:51,713 INFO L168 Benchmark]: Witness Printer took 4.31 ms. Allocated memory is still 163.6 MB. Free memory is still 79.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:51,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 43.5 MB in the beginning and 43.5 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 554.69 ms. Allocated memory is still 83.9 MB. Free memory was 51.1 MB in the beginning and 49.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 116.41 ms. Allocated memory is still 83.9 MB. Free memory was 49.5 MB in the beginning and 46.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 890.18 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.7 MB in the beginning and 38.5 MB in the end (delta: 8.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5699.74 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 38.5 MB in the beginning and 80.9 MB in the end (delta: -42.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.31 ms. Allocated memory is still 163.6 MB. Free memory is still 79.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.5s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 637 SDtfs, 920 SDslu, 1186 SDs, 0 SdLazy, 2627 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, 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, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 16064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 16/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:17:54,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:54,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:54,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:54,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:54,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:54,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:54,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:54,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:54,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:54,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:54,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:54,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:54,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:54,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:54,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:54,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:54,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:54,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:54,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:54,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:54,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:54,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:54,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:54,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:54,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:54,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:54,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:54,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:54,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:54,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:54,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:54,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:54,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:54,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:54,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:54,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:54,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:54,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:54,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:54,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:54,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-28 03:17:54,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:54,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:54,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:54,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:54,273 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:54,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:54,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:17:54,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:17:54,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:17:54,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:17:54,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:54,275 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:17:54,275 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:17:54,275 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:17:54,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:17:54,276 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:17:54,276 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:17:54,276 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:17:54,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:17:54,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:54,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:54,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:54,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:17:54,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:17:54,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:17:54,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:54,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:17:54,279 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:17:54,279 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:17:54,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:54,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:17:54,282 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-11-28 03:17:54,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:54,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:54,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:54,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:54,736 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:54,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-28 03:17:54,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data/26aeb83dd/4d099433400b4064a71157ae78da31bd/FLAGc76426a28 [2020-11-28 03:17:55,512 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:55,512 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-28 03:17:55,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data/26aeb83dd/4d099433400b4064a71157ae78da31bd/FLAGc76426a28 [2020-11-28 03:17:55,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/data/26aeb83dd/4d099433400b4064a71157ae78da31bd [2020-11-28 03:17:55,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:55,764 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:17:55,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:55,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:55,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:55,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:55" (1/1) ... [2020-11-28 03:17:55,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5fadb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:55, skipping insertion in model container [2020-11-28 03:17:55,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:55" (1/1) ... [2020-11-28 03:17:55,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:55,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:56,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:56,345 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:56,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:56,535 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:56,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56 WrapperNode [2020-11-28 03:17:56,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:56,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:56,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:56,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:56,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (1/1) ... [2020-11-28 03:17:56,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (1/1) ... [2020-11-28 03:17:56,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (1/1) ... [2020-11-28 03:17:56,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (1/1) ... [2020-11-28 03:17:56,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (1/1) ... [2020-11-28 03:17:56,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (1/1) ... [2020-11-28 03:17:56,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (1/1) ... [2020-11-28 03:17:56,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:56,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:56,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:56,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:56,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:17:56,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:17:56,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:56,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 03:17:56,776 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:17:56,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:17:56,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:17:56,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:17:56,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:17:56,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:17:56,780 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:17:56,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:17:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:17:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:17:56,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:17:56,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:17:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:17:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:17:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:17:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:17:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:17:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:17:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:17:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:17:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:17:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:17:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:17:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:17:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:17:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:17:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:17:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:17:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:17:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:17:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:17:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:17:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:17:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:17:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:17:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:17:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:17:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:17:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:17:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:17:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:17:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:17:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:17:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:17:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:17:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:17:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:17:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:17:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:17:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:17:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:17:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:17:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:17:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:17:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:17:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:17:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:17:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:17:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:17:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:17:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:17:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:17:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:17:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:17:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:17:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:17:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:17:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:17:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:17:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:17:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:17:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:17:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:17:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:17:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:17:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:17:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:17:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:17:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:17:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:17:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:17:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:17:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:17:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:17:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:17:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:17:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:17:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:17:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:17:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:17:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:17:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:17:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:17:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:17:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:17:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:17:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:17:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:17:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:17:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:17:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:17:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:17:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:17:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:17:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:17:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:17:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:17:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:17:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:17:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:17:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:17:56,813 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:17:56,814 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:17:56,814 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:17:56,814 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:17:56,815 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:17:56,815 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:17:56,815 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:17:56,815 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:17:56,816 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:17:56,816 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:17:56,816 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:17:56,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:17:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:17:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:17:56,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:17:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:17:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:17:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:17:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:17:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:17:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 03:17:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-28 03:17:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-28 03:17:57,572 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:17:58,273 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:58,273 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:17:58,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58 BoogieIcfgContainer [2020-11-28 03:17:58,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:58,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:17:58,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:17:58,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:17:58,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:17:55" (1/3) ... [2020-11-28 03:17:58,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bc311a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:58, skipping insertion in model container [2020-11-28 03:17:58,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:56" (2/3) ... [2020-11-28 03:17:58,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bc311a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:58, skipping insertion in model container [2020-11-28 03:17:58,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58" (3/3) ... [2020-11-28 03:17:58,286 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-11-28 03:17:58,298 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:17:58,303 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-28 03:17:58,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-28 03:17:58,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:17:58,339 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:17:58,339 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:17:58,339 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:58,339 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:58,339 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:17:58,340 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:58,340 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:17:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-11-28 03:17:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:17:58,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:58,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:58,370 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:17:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:58,377 INFO L82 PathProgramCache]: Analyzing trace with hash -243684713, now seen corresponding path program 1 times [2020-11-28 03:17:58,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:58,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917192513] [2020-11-28 03:17:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:17:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:58,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:17:58,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:58,713 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:17:58,714 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:17:58,733 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:17:58,734 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:17:58,734 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 03:17:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:58,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:58,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917192513] [2020-11-28 03:17:58,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:58,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 03:17:58,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318838478] [2020-11-28 03:17:58,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:17:58,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:58,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:17:58,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:17:58,958 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 6 states. [2020-11-28 03:18:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:00,172 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2020-11-28 03:18:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:18:00,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:18:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:00,191 INFO L225 Difference]: With dead ends: 160 [2020-11-28 03:18:00,192 INFO L226 Difference]: Without dead ends: 149 [2020-11-28 03:18:00,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-28 03:18:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-11-28 03:18:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-28 03:18:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2020-11-28 03:18:00,280 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 10 [2020-11-28 03:18:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:00,280 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2020-11-28 03:18:00,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:18:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2020-11-28 03:18:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:18:00,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:00,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:00,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:18:00,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:18:00,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:00,497 INFO L82 PathProgramCache]: Analyzing trace with hash -243684714, now seen corresponding path program 1 times [2020-11-28 03:18:00,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:00,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737717124] [2020-11-28 03:18:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:18:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:00,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:18:00,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:00,733 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:18:00,734 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:00,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:00,737 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:00,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 03:18:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:00,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:00,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737717124] [2020-11-28 03:18:00,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:00,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:18:00,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569893729] [2020-11-28 03:18:00,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:18:00,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:18:00,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:18:00,775 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand 4 states. [2020-11-28 03:18:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:01,232 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-11-28 03:18:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:18:01,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:18:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:01,234 INFO L225 Difference]: With dead ends: 109 [2020-11-28 03:18:01,234 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:18:01,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:18:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-11-28 03:18:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-28 03:18:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-11-28 03:18:01,245 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 10 [2020-11-28 03:18:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:01,246 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-11-28 03:18:01,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:18:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-11-28 03:18:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:18:01,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:01,248 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:01,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:18:01,468 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:18:01,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,469 INFO L82 PathProgramCache]: Analyzing trace with hash 235389844, now seen corresponding path program 1 times [2020-11-28 03:18:01,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:01,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902840986] [2020-11-28 03:18:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:18:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:01,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:18:01,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:01,722 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:18:01,722 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:01,732 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:01,733 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:01,733 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 03:18:01,787 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-28 03:18:01,788 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:01,809 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:01,822 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-28 03:18:01,823 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:01,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:01,844 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:01,845 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-28 03:18:01,906 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-28 03:18:01,907 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:01,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:01,931 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 21 treesize of output 9 [2020-11-28 03:18:01,931 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:01,942 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:01,942 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:01,942 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-28 03:18:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:01,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:02,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902840986] [2020-11-28 03:18:02,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:02,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-28 03:18:02,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235418566] [2020-11-28 03:18:02,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:18:02,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:02,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:18:02,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:18:02,310 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 10 states. [2020-11-28 03:18:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:04,348 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2020-11-28 03:18:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:18:04,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-28 03:18:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:04,350 INFO L225 Difference]: With dead ends: 149 [2020-11-28 03:18:04,350 INFO L226 Difference]: Without dead ends: 149 [2020-11-28 03:18:04,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:18:04,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-28 03:18:04,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2020-11-28 03:18:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-28 03:18:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-11-28 03:18:04,360 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 17 [2020-11-28 03:18:04,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:04,360 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-11-28 03:18:04,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:18:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-11-28 03:18:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:18:04,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:04,361 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:04,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:18:04,562 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:18:04,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:04,563 INFO L82 PathProgramCache]: Analyzing trace with hash 235389843, now seen corresponding path program 1 times [2020-11-28 03:18:04,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:04,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378884496] [2020-11-28 03:18:04,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 03:18:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:04,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:18:04,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:04,772 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:18:04,773 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:04,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:04,775 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:04,775 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 03:18:04,787 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-28 03:18:04,787 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:04,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:04,801 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:04,801 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-28 03:18:04,847 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 23 treesize of output 11 [2020-11-28 03:18:04,847 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:04,850 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:04,850 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:04,851 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-28 03:18:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:04,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:04,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378884496] [2020-11-28 03:18:04,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:04,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 03:18:04,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168794432] [2020-11-28 03:18:04,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:18:04,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:04,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:18:04,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:04,908 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-11-28 03:18:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:05,501 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-11-28 03:18:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:18:05,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 03:18:05,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:05,504 INFO L225 Difference]: With dead ends: 135 [2020-11-28 03:18:05,504 INFO L226 Difference]: Without dead ends: 135 [2020-11-28 03:18:05,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:18:05,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-28 03:18:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2020-11-28 03:18:05,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-28 03:18:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-11-28 03:18:05,510 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 17 [2020-11-28 03:18:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:05,510 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-11-28 03:18:05,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:18:05,511 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-11-28 03:18:05,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:18:05,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:05,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:05,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:18:05,718 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:18:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:05,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1387471408, now seen corresponding path program 1 times [2020-11-28 03:18:05,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:05,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305547875] [2020-11-28 03:18:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 03:18:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:05,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:18:05,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:05,931 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-28 03:18:05,931 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:05,941 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:05,941 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:05,942 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-28 03:18:06,001 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-28 03:18:06,002 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-11-28 03:18:06,002 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:06,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:06,008 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:06,009 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-11-28 03:18:06,038 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 17 treesize of output 9 [2020-11-28 03:18:06,039 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:06,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:06,041 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:06,042 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-28 03:18:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:06,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:06,121 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:18:06,130 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:06,131 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:18:06,131 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-11-28 03:18:06,203 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 160 treesize of output 152 [2020-11-28 03:18:06,207 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-28 03:18:06,292 INFO L625 ElimStorePlain]: treesize reduction 107, result has 22.5 percent of original size [2020-11-28 03:18:06,293 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 03:18:06,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:24 [2020-11-28 03:18:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:06,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305547875] [2020-11-28 03:18:06,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:06,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-11-28 03:18:06,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90568369] [2020-11-28 03:18:06,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:18:06,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:06,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:18:06,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:18:06,316 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 11 states. [2020-11-28 03:18:07,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:07,322 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2020-11-28 03:18:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:18:07,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-11-28 03:18:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:07,324 INFO L225 Difference]: With dead ends: 191 [2020-11-28 03:18:07,324 INFO L226 Difference]: Without dead ends: 191 [2020-11-28 03:18:07,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:18:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-28 03:18:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 100. [2020-11-28 03:18:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 03:18:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-11-28 03:18:07,337 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 18 [2020-11-28 03:18:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:07,337 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-11-28 03:18:07,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:18:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-11-28 03:18:07,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:18:07,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:07,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:07,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 03:18:07,539 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:18:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:07,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2130023316, now seen corresponding path program 1 times [2020-11-28 03:18:07,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:07,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579038736] [2020-11-28 03:18:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 03:18:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:07,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:18:07,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:07,692 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:18:07,692 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:07,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:07,695 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:07,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 03:18:07,716 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-28 03:18:07,716 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:07,732 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:07,733 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:07,733 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-28 03:18:07,754 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 23 treesize of output 11 [2020-11-28 03:18:07,755 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:07,758 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:07,758 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:07,758 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-28 03:18:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:07,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:07,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579038736] [2020-11-28 03:18:07,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:07,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 03:18:07,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95171752] [2020-11-28 03:18:07,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:18:07,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:07,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:18:07,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:07,820 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 6 states. [2020-11-28 03:18:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:08,373 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-11-28 03:18:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:18:08,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 03:18:08,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:08,375 INFO L225 Difference]: With dead ends: 124 [2020-11-28 03:18:08,375 INFO L226 Difference]: Without dead ends: 124 [2020-11-28 03:18:08,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:18:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-28 03:18:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2020-11-28 03:18:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-28 03:18:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-11-28 03:18:08,383 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2020-11-28 03:18:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:08,383 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-11-28 03:18:08,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:18:08,384 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-11-28 03:18:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:18:08,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:08,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:08,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 03:18:08,600 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:18:08,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:08,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2130023317, now seen corresponding path program 1 times [2020-11-28 03:18:08,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:08,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845246705] [2020-11-28 03:18:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 03:18:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:08,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:18:08,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:08,738 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:18:08,738 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:08,743 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:08,743 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:08,744 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 03:18:08,767 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-28 03:18:08,767 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:08,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:08,784 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-28 03:18:08,785 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:08,795 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:08,796 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:08,796 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-28 03:18:08,834 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-28 03:18:08,835 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:08,853 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:08,857 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 21 treesize of output 9 [2020-11-28 03:18:08,858 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:08,864 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:08,864 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:08,864 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-28 03:18:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:08,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:09,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845246705] [2020-11-28 03:18:09,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:09,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-28 03:18:09,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763287614] [2020-11-28 03:18:09,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:18:09,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:09,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:18:09,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:18:09,175 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 10 states. [2020-11-28 03:18:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:10,782 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2020-11-28 03:18:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:18:10,782 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-28 03:18:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:10,783 INFO L225 Difference]: With dead ends: 123 [2020-11-28 03:18:10,784 INFO L226 Difference]: Without dead ends: 123 [2020-11-28 03:18:10,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:18:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-28 03:18:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2020-11-28 03:18:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:18:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-11-28 03:18:10,793 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 18 [2020-11-28 03:18:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:10,794 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-11-28 03:18:10,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:18:10,794 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-11-28 03:18:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:18:10,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:10,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:10,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 03:18:11,000 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:18:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1872584189, now seen corresponding path program 1 times [2020-11-28 03:18:11,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:11,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876889471] [2020-11-28 03:18:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 03:18:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:11,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:18:11,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:11,173 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-28 03:18:11,173 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:11,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:11,181 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:11,181 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-28 03:18:11,220 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-28 03:18:11,221 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-11-28 03:18:11,221 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:11,224 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:11,224 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:11,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-11-28 03:18:11,244 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 17 treesize of output 9 [2020-11-28 03:18:11,244 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:18:11,246 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:11,246 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:18:11,247 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-28 03:18:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:11,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:11,315 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:18:11,322 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:18:11,323 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:18:11,323 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:20 [2020-11-28 03:18:11,365 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 160 treesize of output 152 [2020-11-28 03:18:11,368 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-28 03:18:11,451 INFO L625 ElimStorePlain]: treesize reduction 107, result has 22.5 percent of original size [2020-11-28 03:18:11,453 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 03:18:11,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:24 [2020-11-28 03:18:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:11,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876889471] [2020-11-28 03:18:11,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:11,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-11-28 03:18:11,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634216951] [2020-11-28 03:18:11,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:18:11,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:11,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:18:11,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:18:11,466 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 11 states. [2020-11-28 03:18:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:12,264 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-11-28 03:18:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:18:12,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-11-28 03:18:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:12,265 INFO L225 Difference]: With dead ends: 159 [2020-11-28 03:18:12,266 INFO L226 Difference]: Without dead ends: 159 [2020-11-28 03:18:12,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:18:12,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-28 03:18:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 87. [2020-11-28 03:18:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 03:18:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-11-28 03:18:12,276 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 20 [2020-11-28 03:18:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:12,276 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-11-28 03:18:12,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:18:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-11-28 03:18:12,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:18:12,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:12,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:12,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 03:18:12,491 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:18:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash -88346649, now seen corresponding path program 1 times [2020-11-28 03:18:12,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:12,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812052155] [2020-11-28 03:18:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cae026fa-978b-4fe7-a909-4212f7b3410d/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-28 03:18:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:12,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:12,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:12,743 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:18:12,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:18:12,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 03:18:12,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:18:12 BoogieIcfgContainer [2020-11-28 03:18:12,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:18:12,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:12,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:12,970 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:12,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58" (3/4) ... [2020-11-28 03:18:12,973 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:18:12,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:12,975 INFO L168 Benchmark]: Toolchain (without parser) took 17210.87 ms. Allocated memory was 75.5 MB in the beginning and 134.2 MB in the end (delta: 58.7 MB). Free memory was 40.8 MB in the beginning and 55.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:12,975 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 58.6 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:12,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.56 ms. Allocated memory is still 75.5 MB. Free memory was 40.6 MB in the beginning and 46.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:12,976 INFO L168 Benchmark]: Boogie Preprocessor took 147.69 ms. Allocated memory is still 75.5 MB. Free memory was 46.5 MB in the beginning and 43.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:12,977 INFO L168 Benchmark]: RCFGBuilder took 1592.24 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.3 MB in the beginning and 52.8 MB in the end (delta: -9.5 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:12,977 INFO L168 Benchmark]: TraceAbstraction took 14688.78 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 52.3 MB in the beginning and 55.5 MB in the end (delta: -3.2 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:12,977 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 134.2 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:12,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 58.6 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 771.56 ms. Allocated memory is still 75.5 MB. Free memory was 40.6 MB in the beginning and 46.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 147.69 ms. Allocated memory is still 75.5 MB. Free memory was 46.5 MB in the beginning and 43.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1592.24 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.3 MB in the beginning and 52.8 MB in the end (delta: -9.5 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14688.78 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 52.3 MB in the beginning and 55.5 MB in the end (delta: -3.2 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.18 ms. Allocated memory is still 134.2 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, y=0] [L535] COND FALSE !(a == 0) VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, y=0] [L536] List t; [L537] List p = a; VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L555] p->n = 0 VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L559] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 121 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.6s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 467 SDtfs, 1123 SDslu, 1399 SDs, 0 SdLazy, 2199 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, 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, 8 MinimizatonAttempts, 360 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 240 ConstructedInterpolants, 2 QuantifiedInterpolants, 17364 SizeOfPredicates, 62 NumberOfNonLiveVariables, 740 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 16/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...