./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/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 3e28603c63113c1566dc2e06da17c63059f80486 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:52:50,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:52:50,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:52:50,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:52:50,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:52:50,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:52:50,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:52:50,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:52:50,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:52:50,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:52:50,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:52:50,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:52:50,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:52:50,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:52:50,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:52:50,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:52:50,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:52:50,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:52:50,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:52:50,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:52:50,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:52:50,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:52:50,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:52:50,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:52:50,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:52:50,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:52:50,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:52:50,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:52:50,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:52:50,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:52:50,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:52:50,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:52:50,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:52:50,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:52:50,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:52:50,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:52:50,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:52:50,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:52:50,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:52:50,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:52:50,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:52:50,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 22:52:50,452 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:52:50,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:52:50,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:52:50,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:52:50,453 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:52:50,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:52:50,454 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:52:50,454 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:52:50,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:52:50,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:52:50,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:52:50,455 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 22:52:50,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 22:52:50,455 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 22:52:50,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:52:50,456 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:52:50,456 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:52:50,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:52:50,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:52:50,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:52:50,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:52:50,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:52:50,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:52:50,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:52:50,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:52:50,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:52:50,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/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 -> 3e28603c63113c1566dc2e06da17c63059f80486 [2019-11-15 22:52:50,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:52:50,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:52:50,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:52:50,515 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:52:50,515 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:52:50,516 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-11-15 22:52:50,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/data/dc56db7f8/e897bf846223467d90243a283effdee7/FLAGf98afdca8 [2019-11-15 22:52:51,027 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:52:51,028 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-11-15 22:52:51,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/data/dc56db7f8/e897bf846223467d90243a283effdee7/FLAGf98afdca8 [2019-11-15 22:52:51,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/data/dc56db7f8/e897bf846223467d90243a283effdee7 [2019-11-15 22:52:51,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:52:51,540 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 22:52:51,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:52:51,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:52:51,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:52:51,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:52:51" (1/1) ... [2019-11-15 22:52:51,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95e877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:51, skipping insertion in model container [2019-11-15 22:52:51,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:52:51" (1/1) ... [2019-11-15 22:52:51,557 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:52:51,610 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:52:52,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:52:52,018 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:52:52,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:52:52,124 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:52:52,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52 WrapperNode [2019-11-15 22:52:52,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:52:52,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:52:52,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:52:52,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:52:52,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (1/1) ... [2019-11-15 22:52:52,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (1/1) ... [2019-11-15 22:52:52,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (1/1) ... [2019-11-15 22:52:52,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (1/1) ... [2019-11-15 22:52:52,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (1/1) ... [2019-11-15 22:52:52,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (1/1) ... [2019-11-15 22:52:52,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (1/1) ... [2019-11-15 22:52:52,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:52:52,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:52:52,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:52:52,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:52:52,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:52:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 22:52:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:52:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 22:52:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 22:52:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 22:52:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 22:52:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 22:52:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 22:52:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 22:52:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 22:52:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 22:52:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 22:52:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 22:52:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 22:52:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 22:52:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 22:52:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 22:52:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 22:52:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 22:52:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 22:52:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 22:52:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 22:52:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 22:52:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 22:52:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 22:52:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 22:52:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 22:52:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 22:52:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 22:52:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 22:52:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 22:52:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 22:52:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 22:52:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 22:52:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 22:52:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 22:52:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 22:52:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 22:52:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 22:52:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 22:52:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 22:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 22:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 22:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 22:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 22:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 22:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 22:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 22:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 22:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 22:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 22:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 22:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 22:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 22:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 22:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 22:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 22:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 22:52:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 22:52:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 22:52:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 22:52:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 22:52:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 22:52:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 22:52:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 22:52:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 22:52:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 22:52:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 22:52:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 22:52:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 22:52:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 22:52:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 22:52:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 22:52:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 22:52:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 22:52:52,252 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 22:52:52,252 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 22:52:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 22:52:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 22:52:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 22:52:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 22:52:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 22:52:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 22:52:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 22:52:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 22:52:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 22:52:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 22:52:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 22:52:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 22:52:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 22:52:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 22:52:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 22:52:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 22:52:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 22:52:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 22:52:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 22:52:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 22:52:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 22:52:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 22:52:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 22:52:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 22:52:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 22:52:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 22:52:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 22:52:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 22:52:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 22:52:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 22:52:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 22:52:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 22:52:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 22:52:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 22:52:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 22:52:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 22:52:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 22:52:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 22:52:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 22:52:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 22:52:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:52:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:52:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:52:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:52:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 22:52:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:52:52,728 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:52:52,728 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-15 22:52:52,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:52:52 BoogieIcfgContainer [2019-11-15 22:52:52,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:52:52,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:52:52,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:52:52,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:52:52,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:52:51" (1/3) ... [2019-11-15 22:52:52,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@949f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:52:52, skipping insertion in model container [2019-11-15 22:52:52,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:52" (2/3) ... [2019-11-15 22:52:52,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@949f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:52:52, skipping insertion in model container [2019-11-15 22:52:52,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:52:52" (3/3) ... [2019-11-15 22:52:52,735 INFO L109 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2019-11-15 22:52:52,744 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:52:52,756 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-11-15 22:52:52,763 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-11-15 22:52:52,776 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:52:52,776 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 22:52:52,776 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:52:52,777 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:52:52,777 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:52:52,777 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:52:52,777 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:52:52,777 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:52:52,789 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-15 22:52:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 22:52:52,796 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:52,796 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:52,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,801 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2019-11-15 22:52:52,808 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:52,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838729166] [2019-11-15 22:52:52,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:52,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838729166] [2019-11-15 22:52:52,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:52:52,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:52:52,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571096972] [2019-11-15 22:52:52,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:52:52,967 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:52,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:52:52,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:52:52,981 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-15 22:52:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:53,117 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-11-15 22:52:53,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:52:53,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-15 22:52:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:53,127 INFO L225 Difference]: With dead ends: 36 [2019-11-15 22:52:53,127 INFO L226 Difference]: Without dead ends: 33 [2019-11-15 22:52:53,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:52:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-15 22:52:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-15 22:52:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-15 22:52:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-15 22:52:53,165 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-11-15 22:52:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:53,166 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-15 22:52:53,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:52:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-15 22:52:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 22:52:53,167 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:53,167 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:53,168 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:53,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2019-11-15 22:52:53,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:53,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098545394] [2019-11-15 22:52:53,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:53,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:53,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:53,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098545394] [2019-11-15 22:52:53,256 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:52:53,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:52:53,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802306117] [2019-11-15 22:52:53,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:52:53,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:53,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:52:53,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:52:53,259 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-11-15 22:52:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:53,332 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-11-15 22:52:53,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:52:53,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-15 22:52:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:53,333 INFO L225 Difference]: With dead ends: 29 [2019-11-15 22:52:53,333 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 22:52:53,334 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:52:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 22:52:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 22:52:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 22:52:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-15 22:52:53,338 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2019-11-15 22:52:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:53,339 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-15 22:52:53,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:52:53,339 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-15 22:52:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 22:52:53,340 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:53,340 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:53,340 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:53,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2019-11-15 22:52:53,341 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:53,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537084965] [2019-11-15 22:52:53,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:53,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:53,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:53,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537084965] [2019-11-15 22:52:53,478 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:52:53,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:52:53,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439276898] [2019-11-15 22:52:53,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:52:53,479 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:52:53,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:52:53,480 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2019-11-15 22:52:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:53,601 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-15 22:52:53,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:52:53,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-15 22:52:53,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:53,603 INFO L225 Difference]: With dead ends: 33 [2019-11-15 22:52:53,603 INFO L226 Difference]: Without dead ends: 33 [2019-11-15 22:52:53,603 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:52:53,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-15 22:52:53,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-15 22:52:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 22:52:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-15 22:52:53,608 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2019-11-15 22:52:53,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:53,608 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-15 22:52:53,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:52:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-11-15 22:52:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 22:52:53,609 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:53,609 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:53,609 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:53,610 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2019-11-15 22:52:53,610 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:53,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777417784] [2019-11-15 22:52:53,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:53,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:53,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:53,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777417784] [2019-11-15 22:52:53,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111088292] [2019-11-15 22:52:53,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 22:52:53,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:53,869 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:52:53,869 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2019-11-15 22:52:53,870 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845202205] [2019-11-15 22:52:53,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:52:53,870 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:53,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:52:53,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:52:53,871 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2019-11-15 22:52:53,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:53,915 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2019-11-15 22:52:53,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:52:53,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-15 22:52:53,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:53,918 INFO L225 Difference]: With dead ends: 54 [2019-11-15 22:52:53,918 INFO L226 Difference]: Without dead ends: 54 [2019-11-15 22:52:53,918 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:52:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-15 22:52:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-11-15 22:52:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 22:52:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-11-15 22:52:53,931 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2019-11-15 22:52:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:53,931 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-11-15 22:52:53,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:52:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-11-15 22:52:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 22:52:53,932 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:53,933 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:54,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:54,138 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:54,138 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2019-11-15 22:52:54,139 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:54,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218014688] [2019-11-15 22:52:54,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:54,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:54,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:54,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218014688] [2019-11-15 22:52:54,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916148171] [2019-11-15 22:52:54,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:54,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 22:52:54,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:54,430 INFO L375 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 8 treesize of output 7 [2019-11-15 22:52:54,431 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:52:54,437 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:52:54,438 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:52:54,438 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-11-15 22:52:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:54,482 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:52:54,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-15 22:52:54,482 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998066928] [2019-11-15 22:52:54,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:52:54,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:54,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:52:54,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:52:54,484 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2019-11-15 22:52:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:54,629 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-11-15 22:52:54,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:52:54,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-15 22:52:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:54,630 INFO L225 Difference]: With dead ends: 39 [2019-11-15 22:52:54,630 INFO L226 Difference]: Without dead ends: 39 [2019-11-15 22:52:54,631 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:52:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-15 22:52:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2019-11-15 22:52:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-15 22:52:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-11-15 22:52:54,636 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2019-11-15 22:52:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:54,637 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-11-15 22:52:54,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:52:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-11-15 22:52:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 22:52:54,638 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:54,638 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:54,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:54,840 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:54,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2019-11-15 22:52:54,841 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:54,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076042570] [2019-11-15 22:52:54,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:54,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:54,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:54,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076042570] [2019-11-15 22:52:54,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417560790] [2019-11-15 22:52:54,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:55,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 22:52:55,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:55,098 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:52:55,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2019-11-15 22:52:55,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270552214] [2019-11-15 22:52:55,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 22:52:55,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:55,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 22:52:55,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:52:55,099 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2019-11-15 22:52:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:55,268 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-11-15 22:52:55,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:52:55,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-11-15 22:52:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:55,269 INFO L225 Difference]: With dead ends: 50 [2019-11-15 22:52:55,269 INFO L226 Difference]: Without dead ends: 50 [2019-11-15 22:52:55,270 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:52:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-15 22:52:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-11-15 22:52:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-15 22:52:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-11-15 22:52:55,274 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2019-11-15 22:52:55,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:55,274 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-11-15 22:52:55,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 22:52:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-11-15 22:52:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 22:52:55,275 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:55,275 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:55,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:55,476 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:55,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2019-11-15 22:52:55,476 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:55,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407416930] [2019-11-15 22:52:55,476 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:55,477 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:55,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:52:55,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407416930] [2019-11-15 22:52:55,525 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:52:55,525 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:52:55,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809242299] [2019-11-15 22:52:55,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:52:55,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:55,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:52:55,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:52:55,527 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2019-11-15 22:52:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:55,597 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-11-15 22:52:55,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:52:55,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-15 22:52:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:55,598 INFO L225 Difference]: With dead ends: 44 [2019-11-15 22:52:55,598 INFO L226 Difference]: Without dead ends: 44 [2019-11-15 22:52:55,599 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:52:55,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-15 22:52:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-11-15 22:52:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-15 22:52:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-11-15 22:52:55,603 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2019-11-15 22:52:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:55,603 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-11-15 22:52:55,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:52:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-11-15 22:52:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 22:52:55,604 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:55,604 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:55,604 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:55,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2019-11-15 22:52:55,605 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:55,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975688916] [2019-11-15 22:52:55,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:55,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:55,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:55,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975688916] [2019-11-15 22:52:55,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483259846] [2019-11-15 22:52:55,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:55,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 22:52:55,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:52:55,902 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:52:55,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2019-11-15 22:52:55,903 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358052411] [2019-11-15 22:52:55,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:52:55,903 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:55,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:52:55,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:52:55,904 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2019-11-15 22:52:55,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:55,934 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2019-11-15 22:52:55,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:52:55,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-15 22:52:55,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:55,935 INFO L225 Difference]: With dead ends: 56 [2019-11-15 22:52:55,935 INFO L226 Difference]: Without dead ends: 56 [2019-11-15 22:52:55,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:52:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-15 22:52:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-11-15 22:52:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-15 22:52:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2019-11-15 22:52:55,940 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2019-11-15 22:52:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:55,941 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2019-11-15 22:52:55,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:52:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2019-11-15 22:52:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 22:52:55,942 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:55,942 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:52:56,146 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:56,146 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:56,146 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2019-11-15 22:52:56,147 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:56,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102869634] [2019-11-15 22:52:56,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:56,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:56,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:56,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102869634] [2019-11-15 22:52:56,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448456764] [2019-11-15 22:52:56,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:56,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:52:56,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:56,468 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:52:56,468 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2019-11-15 22:52:56,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617898292] [2019-11-15 22:52:56,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 22:52:56,469 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:56,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 22:52:56,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-15 22:52:56,470 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 14 states. [2019-11-15 22:52:56,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:56,941 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2019-11-15 22:52:56,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-15 22:52:56,942 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2019-11-15 22:52:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:56,943 INFO L225 Difference]: With dead ends: 74 [2019-11-15 22:52:56,943 INFO L226 Difference]: Without dead ends: 74 [2019-11-15 22:52:56,944 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2019-11-15 22:52:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-15 22:52:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2019-11-15 22:52:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-15 22:52:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-11-15 22:52:56,949 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2019-11-15 22:52:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:56,949 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-11-15 22:52:56,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 22:52:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-11-15 22:52:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 22:52:56,954 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:52:56,954 INFO L380 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] [2019-11-15 22:52:57,160 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:52:57,161 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr5REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:52:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:57,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2019-11-15 22:52:57,161 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:57,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038486422] [2019-11-15 22:52:57,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:57,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:57,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 22:52:57,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038486422] [2019-11-15 22:52:57,215 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:52:57,215 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:52:57,215 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9628395] [2019-11-15 22:52:57,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:52:57,216 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:57,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:52:57,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:52:57,216 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2019-11-15 22:52:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:57,245 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-11-15 22:52:57,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:52:57,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-15 22:52:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:52:57,246 INFO L225 Difference]: With dead ends: 47 [2019-11-15 22:52:57,247 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:52:57,247 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:52:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:52:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:52:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:52:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:52:57,248 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-15 22:52:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:52:57,248 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:52:57,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:52:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:52:57,248 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:52:57,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:52:57 BoogieIcfgContainer [2019-11-15 22:52:57,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:52:57,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:52:57,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:52:57,254 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:52:57,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:52:52" (3/4) ... [2019-11-15 22:52:57,258 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:52:57,263 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 22:52:57,264 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-15 22:52:57,264 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-15 22:52:57,264 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-15 22:52:57,264 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-15 22:52:57,265 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 22:52:57,265 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-15 22:52:57,282 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-15 22:52:57,286 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-15 22:52:57,286 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 22:52:57,287 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 22:52:57,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_589cb9e7-cd82-4d5b-a11b-ebe13447ffa4/bin/uautomizer/witness.graphml [2019-11-15 22:52:57,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:52:57,333 INFO L168 Benchmark]: Toolchain (without parser) took 5792.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 940.6 MB in the beginning and 1.2 GB in the end (delta: -239.5 MB). Peak memory consumption was 215.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:57,333 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:52:57,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:57,338 INFO L168 Benchmark]: Boogie Preprocessor took 49.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:57,338 INFO L168 Benchmark]: RCFGBuilder took 554.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:57,338 INFO L168 Benchmark]: TraceAbstraction took 4523.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 865.0 MB in the end (delta: 204.8 MB). Peak memory consumption was 204.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:57,339 INFO L168 Benchmark]: Witness Printer took 78.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 45.1 MB). Free memory was 865.0 MB in the beginning and 1.2 GB in the end (delta: -315.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:52:57,345 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 582.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 554.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4523.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 865.0 MB in the end (delta: 204.8 MB). Peak memory consumption was 204.8 MB. Max. memory is 11.5 GB. * Witness Printer took 78.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 45.1 MB). Free memory was 865.0 MB in the beginning and 1.2 GB in the end (delta: -315.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 51 locations, 9 error locations. Result: SAFE, OverallTime: 4.4s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 517 SDslu, 352 SDs, 0 SdLazy, 679 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 23026 SizeOfPredicates, 12 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 18/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...