./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/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 d4019c4159483ac83115551cd48ccd0ba128dc3d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:25:12,343 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:25:12,344 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:25:12,352 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:25:12,352 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:25:12,353 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:25:12,354 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:25:12,355 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:25:12,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:25:12,357 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:25:12,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:25:12,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:25:12,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:25:12,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:25:12,359 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:25:12,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:25:12,360 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:25:12,361 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:25:12,362 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:25:12,363 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:25:12,364 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:25:12,365 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:25:12,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:25:12,366 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:25:12,366 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:25:12,367 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:25:12,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:25:12,368 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:25:12,369 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:25:12,374 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:25:12,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:25:12,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:25:12,374 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:25:12,375 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:25:12,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:25:12,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:25:12,376 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 11:25:12,385 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:25:12,385 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:25:12,386 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:25:12,386 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:25:12,386 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:25:12,386 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:25:12,386 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:25:12,387 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:25:12,387 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:25:12,387 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:25:12,387 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:25:12,387 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:25:12,387 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:25:12,387 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 11:25:12,387 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 11:25:12,388 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 11:25:12,388 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:25:12,388 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:25:12,388 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:25:12,388 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:25:12,388 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:25:12,388 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:25:12,388 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:25:12,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:25:12,389 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:25:12,389 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:25:12,389 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:25:12,389 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:25:12,389 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_33d75f51-fffa-4427-8c81-80252da938ab/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 -> d4019c4159483ac83115551cd48ccd0ba128dc3d [2018-11-28 11:25:12,411 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:25:12,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:25:12,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:25:12,423 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:25:12,423 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:25:12,424 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:25:12,468 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/data/b562a9d3a/b08b10d0feee4041bb765712c83e7960/FLAG218adaef3 [2018-11-28 11:25:12,870 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:25:12,870 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:25:12,881 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/data/b562a9d3a/b08b10d0feee4041bb765712c83e7960/FLAG218adaef3 [2018-11-28 11:25:12,892 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/data/b562a9d3a/b08b10d0feee4041bb765712c83e7960 [2018-11-28 11:25:12,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:25:12,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 11:25:12,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:25:12,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:25:12,899 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:25:12,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:12" (1/1) ... [2018-11-28 11:25:12,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3091b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:12, skipping insertion in model container [2018-11-28 11:25:12,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:12" (1/1) ... [2018-11-28 11:25:12,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:25:12,936 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:25:13,136 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:25:13,145 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:25:13,215 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:25:13,240 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:25:13,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13 WrapperNode [2018-11-28 11:25:13,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:25:13,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:25:13,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:25:13,241 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:25:13,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (1/1) ... [2018-11-28 11:25:13,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (1/1) ... [2018-11-28 11:25:13,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (1/1) ... [2018-11-28 11:25:13,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (1/1) ... [2018-11-28 11:25:13,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (1/1) ... [2018-11-28 11:25:13,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (1/1) ... [2018-11-28 11:25:13,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (1/1) ... [2018-11-28 11:25:13,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:25:13,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:25:13,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:25:13,276 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:25:13,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/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 [2018-11-28 11:25:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:25:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:25:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 11:25:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 11:25:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemchr [2018-11-28 11:25:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:25:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 11:25:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 11:25:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 11:25:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 11:25:13,319 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 11:25:13,320 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 11:25:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 11:25:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 11:25:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 11:25:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 11:25:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 11:25:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 11:25:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 11:25:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 11:25:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 11:25:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 11:25:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 11:25:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 11:25:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 11:25:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 11:25:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure cmemchr [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:25:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:25:13,594 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:25:13,594 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 11:25:13,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:13 BoogieIcfgContainer [2018-11-28 11:25:13,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:25:13,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:25:13,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:25:13,599 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:25:13,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:25:12" (1/3) ... [2018-11-28 11:25:13,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0a5c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:25:13, skipping insertion in model container [2018-11-28 11:25:13,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:13" (2/3) ... [2018-11-28 11:25:13,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0a5c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:25:13, skipping insertion in model container [2018-11-28 11:25:13,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:13" (3/3) ... [2018-11-28 11:25:13,602 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:25:13,608 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:25:13,613 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 11:25:13,625 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 11:25:13,640 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:25:13,641 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:25:13,641 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 11:25:13,641 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:25:13,641 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:25:13,641 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:25:13,641 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:25:13,641 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:25:13,641 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:25:13,653 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-28 11:25:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 11:25:13,661 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:13,662 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:13,663 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 11:25:13,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:13,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573627, now seen corresponding path program 1 times [2018-11-28 11:25:13,668 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:13,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:13,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:13,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:13,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:13,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:25:13,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 11:25:13,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:25:13,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:25:13,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:25:13,835 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2018-11-28 11:25:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:13,958 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-11-28 11:25:13,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:25:13,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-28 11:25:13,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:13,966 INFO L225 Difference]: With dead ends: 30 [2018-11-28 11:25:13,966 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 11:25:13,967 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 [2018-11-28 11:25:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 11:25:13,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-11-28 11:25:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 11:25:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-28 11:25:13,989 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2018-11-28 11:25:13,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:13,989 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-28 11:25:13,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:25:13,989 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-28 11:25:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 11:25:13,989 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:13,990 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:13,990 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 11:25:13,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:13,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573628, now seen corresponding path program 1 times [2018-11-28 11:25:13,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:13,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:13,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:13,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:13,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:14,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:25:14,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 11:25:14,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 11:25:14,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 11:25:14,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:25:14,076 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2018-11-28 11:25:14,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:14,154 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-11-28 11:25:14,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:25:14,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-11-28 11:25:14,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:14,155 INFO L225 Difference]: With dead ends: 27 [2018-11-28 11:25:14,155 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 11:25:14,157 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:25:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 11:25:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-11-28 11:25:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 11:25:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-28 11:25:14,161 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2018-11-28 11:25:14,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:14,161 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-28 11:25:14,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 11:25:14,161 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-28 11:25:14,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 11:25:14,163 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:14,163 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:14,163 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 11:25:14,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:14,163 INFO L82 PathProgramCache]: Analyzing trace with hash 51778827, now seen corresponding path program 1 times [2018-11-28 11:25:14,164 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:14,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:14,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:14,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:14,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:25:14,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:25:14,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:25:14,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:25:14,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:25:14,215 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-28 11:25:14,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:14,259 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-11-28 11:25:14,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:25:14,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-28 11:25:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:14,261 INFO L225 Difference]: With dead ends: 38 [2018-11-28 11:25:14,261 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 11:25:14,263 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 [2018-11-28 11:25:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 11:25:14,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2018-11-28 11:25:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 11:25:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-11-28 11:25:14,270 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2018-11-28 11:25:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:14,270 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-11-28 11:25:14,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:25:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-11-28 11:25:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 11:25:14,271 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:14,271 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:14,272 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 11:25:14,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:14,272 INFO L82 PathProgramCache]: Analyzing trace with hash -341248183, now seen corresponding path program 1 times [2018-11-28 11:25:14,272 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:14,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:14,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:14,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:14,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:25:14,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:25:14,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:25:14,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:25:14,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:25:14,316 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2018-11-28 11:25:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:14,353 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-11-28 11:25:14,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:25:14,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-28 11:25:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:14,354 INFO L225 Difference]: With dead ends: 30 [2018-11-28 11:25:14,354 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 11:25:14,354 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 [2018-11-28 11:25:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 11:25:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-28 11:25:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 11:25:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-28 11:25:14,356 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-11-28 11:25:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:14,356 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-28 11:25:14,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:25:14,356 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-28 11:25:14,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 11:25:14,357 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:14,357 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:14,357 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 11:25:14,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:14,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1015686468, now seen corresponding path program 1 times [2018-11-28 11:25:14,357 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:14,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:14,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:14,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:14,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:25:14,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 11:25:14,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:25:14,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:25:14,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:25:14,465 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2018-11-28 11:25:14,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:14,515 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-28 11:25:14,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:25:14,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-28 11:25:14,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:14,516 INFO L225 Difference]: With dead ends: 29 [2018-11-28 11:25:14,516 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 11:25:14,517 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:25:14,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 11:25:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-28 11:25:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 11:25:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-28 11:25:14,519 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 19 [2018-11-28 11:25:14,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:14,519 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-28 11:25:14,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:25:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-28 11:25:14,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 11:25:14,519 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:14,519 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:14,520 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 11:25:14,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:14,520 INFO L82 PathProgramCache]: Analyzing trace with hash -757521030, now seen corresponding path program 1 times [2018-11-28 11:25:14,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:14,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:14,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:14,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:14,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:25:14,700 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/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 [2018-11-28 11:25:14,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:14,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:14,767 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 [2018-11-28 11:25:14,768 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 11:25:14,771 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:25:14,771 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 11:25:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:14,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:25:14,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2018-11-28 11:25:14,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 11:25:14,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 11:25:14,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2018-11-28 11:25:14,952 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 21 states. [2018-11-28 11:25:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:15,249 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-28 11:25:15,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 11:25:15,249 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2018-11-28 11:25:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:15,250 INFO L225 Difference]: With dead ends: 26 [2018-11-28 11:25:15,250 INFO L226 Difference]: Without dead ends: 26 [2018-11-28 11:25:15,251 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2018-11-28 11:25:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-28 11:25:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-28 11:25:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 11:25:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-28 11:25:15,253 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2018-11-28 11:25:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:15,253 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-28 11:25:15,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 11:25:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-28 11:25:15,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 11:25:15,254 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:15,254 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:15,255 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 11:25:15,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:15,255 INFO L82 PathProgramCache]: Analyzing trace with hash -39295938, now seen corresponding path program 2 times [2018-11-28 11:25:15,255 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:15,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:15,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:15,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:15,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:15,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:25:15,484 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/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 [2018-11-28 11:25:15,494 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:25:15,513 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:25:15,513 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:25:15,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:15,521 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 [2018-11-28 11:25:15,522 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 11:25:15,538 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:25:15,538 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 11:25:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:15,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:25:15,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2018-11-28 11:25:15,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 11:25:15,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 11:25:15,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2018-11-28 11:25:15,741 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 22 states. [2018-11-28 11:25:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:16,209 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-11-28 11:25:16,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-28 11:25:16,209 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 24 [2018-11-28 11:25:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:16,210 INFO L225 Difference]: With dead ends: 30 [2018-11-28 11:25:16,210 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 11:25:16,211 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2018-11-28 11:25:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 11:25:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 11:25:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 11:25:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:25:16,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-11-28 11:25:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:16,212 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:25:16,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 11:25:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:25:16,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 11:25:16,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:25:16 BoogieIcfgContainer [2018-11-28 11:25:16,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:25:16,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:25:16,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:25:16,215 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:25:16,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:13" (3/4) ... [2018-11-28 11:25:16,218 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 11:25:16,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemchr [2018-11-28 11:25:16,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 11:25:16,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-11-28 11:25:16,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-11-28 11:25:16,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 11:25:16,227 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-11-28 11:25:16,227 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 11:25:16,228 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 11:25:16,258 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_33d75f51-fffa-4427-8c81-80252da938ab/bin-2019/uautomizer/witness.graphml [2018-11-28 11:25:16,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:25:16,259 INFO L168 Benchmark]: Toolchain (without parser) took 3364.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.7 MB). Free memory was 950.6 MB in the beginning and 1.0 GB in the end (delta: -51.7 MB). Peak memory consumption was 169.0 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:16,260 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:25:16,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:16,260 INFO L168 Benchmark]: Boogie Preprocessor took 34.81 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:16,261 INFO L168 Benchmark]: RCFGBuilder took 319.08 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: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:16,261 INFO L168 Benchmark]: TraceAbstraction took 2619.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 86.5 MB). Peak memory consumption was 152.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:16,261 INFO L168 Benchmark]: Witness Printer took 43.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:16,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.81 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 319.08 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: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2619.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 86.5 MB). Peak memory consumption was 152.6 MB. Max. memory is 11.5 GB. * Witness Printer took 43.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: 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, 2.5s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 136 SDtfs, 160 SDslu, 662 SDs, 0 SdLazy, 559 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, 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, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 158 ConstructedInterpolants, 2 QuantifiedInterpolants, 23231 SizeOfPredicates, 20 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 2/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...