./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/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 707f24c72c63346ec05641b1665aeeecec8225e6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 08:51:34,197 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 08:51:34,198 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 08:51:34,204 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 08:51:34,204 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 08:51:34,205 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 08:51:34,206 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 08:51:34,206 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 08:51:34,207 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 08:51:34,208 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 08:51:34,208 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 08:51:34,208 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 08:51:34,209 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 08:51:34,209 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 08:51:34,210 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 08:51:34,210 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 08:51:34,211 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 08:51:34,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 08:51:34,213 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 08:51:34,213 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 08:51:34,214 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 08:51:34,215 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 08:51:34,216 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 08:51:34,216 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 08:51:34,216 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 08:51:34,217 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 08:51:34,217 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 08:51:34,218 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 08:51:34,218 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 08:51:34,219 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 08:51:34,219 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 08:51:34,219 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 08:51:34,219 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 08:51:34,220 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 08:51:34,220 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 08:51:34,220 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 08:51:34,221 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-08 08:51:34,228 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 08:51:34,228 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 08:51:34,228 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 08:51:34,229 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 08:51:34,229 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 08:51:34,229 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 08:51:34,229 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 08:51:34,229 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 08:51:34,229 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 08:51:34,230 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 08:51:34,231 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 08:51:34,231 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 08:51:34,231 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 08:51:34,231 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 08:51:34,231 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 08:51:34,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 08:51:34,231 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 08:51:34,232 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 08:51:34,232 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 08:51:34,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 08:51:34,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/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 -> 707f24c72c63346ec05641b1665aeeecec8225e6 [2018-12-08 08:51:34,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 08:51:34,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 08:51:34,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 08:51:34,259 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 08:51:34,260 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 08:51:34,260 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-12-08 08:51:34,299 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/data/c9cb7dec6/6aca98cd3aea46a1bc7b6cc6e9862580/FLAGacdf73b28 [2018-12-08 08:51:34,610 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 08:51:34,611 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-12-08 08:51:34,616 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/data/c9cb7dec6/6aca98cd3aea46a1bc7b6cc6e9862580/FLAGacdf73b28 [2018-12-08 08:51:34,624 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/data/c9cb7dec6/6aca98cd3aea46a1bc7b6cc6e9862580 [2018-12-08 08:51:34,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 08:51:34,627 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-08 08:51:34,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 08:51:34,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 08:51:34,629 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 08:51:34,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e9f722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34, skipping insertion in model container [2018-12-08 08:51:34,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 08:51:34,659 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 08:51:34,812 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:51:34,851 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 08:51:34,874 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:51:34,904 INFO L195 MainTranslator]: Completed translation [2018-12-08 08:51:34,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34 WrapperNode [2018-12-08 08:51:34,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 08:51:34,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 08:51:34,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 08:51:34,905 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 08:51:34,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (1/1) ... [2018-12-08 08:51:34,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 08:51:34,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 08:51:34,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 08:51:34,935 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 08:51:34,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/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 [2018-12-08 08:51:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 08:51:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 08:51:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-12-08 08:51:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-12-08 08:51:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2018-12-08 08:51:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 08:51:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-12-08 08:51:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-12-08 08:51:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-08 08:51:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-08 08:51:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-08 08:51:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-08 08:51:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-08 08:51:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-08 08:51:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-08 08:51:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-08 08:51:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-08 08:51:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-08 08:51:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-08 08:51:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-08 08:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-08 08:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 08:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 08:51:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 08:51:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 08:51:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 08:51:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 08:51:35,176 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 08:51:35,176 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 08:51:35,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:51:35 BoogieIcfgContainer [2018-12-08 08:51:35,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 08:51:35,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 08:51:35,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 08:51:35,179 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 08:51:35,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 08:51:34" (1/3) ... [2018-12-08 08:51:35,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e943066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:51:35, skipping insertion in model container [2018-12-08 08:51:35,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:51:34" (2/3) ... [2018-12-08 08:51:35,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e943066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:51:35, skipping insertion in model container [2018-12-08 08:51:35,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:51:35" (3/3) ... [2018-12-08 08:51:35,181 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-12-08 08:51:35,187 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 08:51:35,192 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-08 08:51:35,201 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-08 08:51:35,216 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 08:51:35,216 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 08:51:35,216 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 08:51:35,216 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 08:51:35,216 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 08:51:35,216 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 08:51:35,217 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 08:51:35,217 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 08:51:35,217 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 08:51:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-12-08 08:51:35,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 08:51:35,232 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:51:35,233 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:51:35,234 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 08:51:35,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:51:35,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573627, now seen corresponding path program 1 times [2018-12-08 08:51:35,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:51:35,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:51:35,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:35,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:35,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:35,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:51:35,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-08 08:51:35,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 08:51:35,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 08:51:35,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-08 08:51:35,396 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2018-12-08 08:51:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:51:35,474 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-12-08 08:51:35,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 08:51:35,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-12-08 08:51:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:51:35,481 INFO L225 Difference]: With dead ends: 30 [2018-12-08 08:51:35,482 INFO L226 Difference]: Without dead ends: 27 [2018-12-08 08:51:35,483 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-08 08:51:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-08 08:51:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-12-08 08:51:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 08:51:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-08 08:51:35,504 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2018-12-08 08:51:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:51:35,504 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-08 08:51:35,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 08:51:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-08 08:51:35,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 08:51:35,505 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:51:35,505 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:51:35,505 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 08:51:35,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:51:35,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573628, now seen corresponding path program 1 times [2018-12-08 08:51:35,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:51:35,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:51:35,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:35,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:35,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:35,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:51:35,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 08:51:35,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 08:51:35,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 08:51:35,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-08 08:51:35,645 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2018-12-08 08:51:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:51:35,761 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2018-12-08 08:51:35,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-08 08:51:35,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-08 08:51:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:51:35,763 INFO L225 Difference]: With dead ends: 47 [2018-12-08 08:51:35,763 INFO L226 Difference]: Without dead ends: 47 [2018-12-08 08:51:35,763 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-12-08 08:51:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-08 08:51:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2018-12-08 08:51:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-08 08:51:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-08 08:51:35,767 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 14 [2018-12-08 08:51:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:51:35,767 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-08 08:51:35,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 08:51:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-08 08:51:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 08:51:35,768 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:51:35,768 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:51:35,768 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 08:51:35,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:51:35,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1513386306, now seen corresponding path program 1 times [2018-12-08 08:51:35,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:51:35,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:51:35,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:35,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:35,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:35,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:51:35,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 08:51:35,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 08:51:35,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 08:51:35,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-12-08 08:51:35,877 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2018-12-08 08:51:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:51:35,977 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2018-12-08 08:51:35,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-08 08:51:35,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-12-08 08:51:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:51:35,979 INFO L225 Difference]: With dead ends: 50 [2018-12-08 08:51:35,979 INFO L226 Difference]: Without dead ends: 50 [2018-12-08 08:51:35,979 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-12-08 08:51:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-08 08:51:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 26. [2018-12-08 08:51:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 08:51:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-12-08 08:51:35,983 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2018-12-08 08:51:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:51:35,983 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-12-08 08:51:35,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 08:51:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-12-08 08:51:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-08 08:51:35,984 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:51:35,984 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:51:35,984 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 08:51:35,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:51:35,984 INFO L82 PathProgramCache]: Analyzing trace with hash 51778827, now seen corresponding path program 1 times [2018-12-08 08:51:35,984 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:51:35,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:51:35,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:35,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:35,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:36,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:51:36,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 08:51:36,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 08:51:36,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 08:51:36,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:51:36,019 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-12-08 08:51:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:51:36,042 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-12-08 08:51:36,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 08:51:36,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-08 08:51:36,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:51:36,044 INFO L225 Difference]: With dead ends: 38 [2018-12-08 08:51:36,044 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 08:51:36,045 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 08:51:36,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 08:51:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2018-12-08 08:51:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-08 08:51:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-12-08 08:51:36,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2018-12-08 08:51:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:51:36,052 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-12-08 08:51:36,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 08:51:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-12-08 08:51:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-08 08:51:36,054 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:51:36,054 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:51:36,054 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 08:51:36,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:51:36,054 INFO L82 PathProgramCache]: Analyzing trace with hash -341248183, now seen corresponding path program 1 times [2018-12-08 08:51:36,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:51:36,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:51:36,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:36,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:36,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:36,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:51:36,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 08:51:36,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 08:51:36,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 08:51:36,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:51:36,086 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2018-12-08 08:51:36,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:51:36,113 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-12-08 08:51:36,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 08:51:36,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-12-08 08:51:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:51:36,114 INFO L225 Difference]: With dead ends: 30 [2018-12-08 08:51:36,114 INFO L226 Difference]: Without dead ends: 22 [2018-12-08 08:51:36,114 INFO L631 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 [2018-12-08 08:51:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-08 08:51:36,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-12-08 08:51:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-08 08:51:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-12-08 08:51:36,116 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-12-08 08:51:36,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:51:36,116 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-12-08 08:51:36,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 08:51:36,117 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-12-08 08:51:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 08:51:36,117 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:51:36,117 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:51:36,117 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 08:51:36,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:51:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1015686468, now seen corresponding path program 1 times [2018-12-08 08:51:36,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:51:36,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:51:36,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:36,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:36,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:36,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:51:36,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-08 08:51:36,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 08:51:36,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 08:51:36,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-08 08:51:36,254 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2018-12-08 08:51:36,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:51:36,409 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-12-08 08:51:36,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-08 08:51:36,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-12-08 08:51:36,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:51:36,410 INFO L225 Difference]: With dead ends: 29 [2018-12-08 08:51:36,410 INFO L226 Difference]: Without dead ends: 20 [2018-12-08 08:51:36,410 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-12-08 08:51:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-08 08:51:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-08 08:51:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-08 08:51:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-08 08:51:36,412 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 19 [2018-12-08 08:51:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:51:36,413 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-08 08:51:36,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 08:51:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-08 08:51:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 08:51:36,413 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:51:36,413 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:51:36,414 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 08:51:36,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:51:36,414 INFO L82 PathProgramCache]: Analyzing trace with hash -757521030, now seen corresponding path program 1 times [2018-12-08 08:51:36,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:51:36,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:51:36,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:36,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:36,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:36,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:51:36,562 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:51:36,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:36,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:51:36,632 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-08 08:51:36,633 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 08:51:36,637 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 08:51:36,637 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2018-12-08 08:51:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:36,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:51:36,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2018-12-08 08:51:36,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-08 08:51:36,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-08 08:51:36,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2018-12-08 08:51:36,858 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 22 states. [2018-12-08 08:51:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:51:37,134 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-12-08 08:51:37,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 08:51:37,134 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 19 [2018-12-08 08:51:37,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:51:37,135 INFO L225 Difference]: With dead ends: 26 [2018-12-08 08:51:37,135 INFO L226 Difference]: Without dead ends: 26 [2018-12-08 08:51:37,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2018-12-08 08:51:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-08 08:51:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-12-08 08:51:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-08 08:51:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-08 08:51:37,137 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2018-12-08 08:51:37,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:51:37,137 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-08 08:51:37,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-08 08:51:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-08 08:51:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-08 08:51:37,138 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:51:37,138 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:51:37,139 INFO L423 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 08:51:37,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:51:37,139 INFO L82 PathProgramCache]: Analyzing trace with hash -39295938, now seen corresponding path program 2 times [2018-12-08 08:51:37,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:51:37,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:51:37,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:37,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:51:37,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:51:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:51:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:37,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:51:37,283 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:51:37,289 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 08:51:37,303 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 08:51:37,303 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:51:37,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:51:41,012 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 22 [2018-12-08 08:51:42,875 WARN L180 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 25 [2018-12-08 08:51:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:51:42,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:51:42,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2018-12-08 08:51:42,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-08 08:51:42,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-08 08:51:42,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2018-12-08 08:51:42,893 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 22 states. [2018-12-08 08:51:44,201 WARN L180 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2018-12-08 08:51:44,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:51:44,212 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-12-08 08:51:44,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-08 08:51:44,213 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 24 [2018-12-08 08:51:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:51:44,213 INFO L225 Difference]: With dead ends: 25 [2018-12-08 08:51:44,213 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 08:51:44,213 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2018-12-08 08:51:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 08:51:44,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 08:51:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 08:51:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 08:51:44,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-12-08 08:51:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:51:44,214 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 08:51:44,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-08 08:51:44,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 08:51:44,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 08:51:44,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 08:51:44 BoogieIcfgContainer [2018-12-08 08:51:44,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 08:51:44,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 08:51:44,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 08:51:44,217 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 08:51:44,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:51:35" (3/4) ... [2018-12-08 08:51:44,220 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 08:51:44,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 08:51:44,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2018-12-08 08:51:44,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-12-08 08:51:44,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-12-08 08:51:44,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 08:51:44,226 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-12-08 08:51:44,227 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-08 08:51:44,227 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 08:51:44,251 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f7bc062c-1b68-4fda-bbd0-69e35c98ef9f/bin-2019/uautomizer/witness.graphml [2018-12-08 08:51:44,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 08:51:44,252 INFO L168 Benchmark]: Toolchain (without parser) took 9625.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 949.5 MB in the beginning and 1.0 GB in the end (delta: -85.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. [2018-12-08 08:51:44,252 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:51:44,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -148.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-08 08:51:44,253 INFO L168 Benchmark]: Boogie Preprocessor took 29.37 ms. Allocated memory is still 1.1 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. [2018-12-08 08:51:44,253 INFO L168 Benchmark]: RCFGBuilder took 242.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2018-12-08 08:51:44,253 INFO L168 Benchmark]: TraceAbstraction took 9039.73 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 33.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.8 MB). Peak memory consumption was 54.3 MB. Max. memory is 11.5 GB. [2018-12-08 08:51:44,253 INFO L168 Benchmark]: Witness Printer took 34.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:51:44,254 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -148.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.37 ms. Allocated memory is still 1.1 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 242.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9039.73 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 33.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.8 MB). Peak memory consumption was 54.3 MB. Max. memory is 11.5 GB. * Witness Printer took 34.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 3 error locations. SAFE Result, 9.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 190 SDslu, 687 SDs, 0 SdLazy, 553 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 46 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 171 ConstructedInterpolants, 2 QuantifiedInterpolants, 30815 SizeOfPredicates, 17 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 4/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...