./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3444bab46e3acd40907f623c997f9115bc97543a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:27:48,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:27:48,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:27:48,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:27:48,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:27:48,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:27:48,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:27:48,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:27:48,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:27:48,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:27:48,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:27:48,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:27:48,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:27:48,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:27:48,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:27:48,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:27:48,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:27:48,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:27:48,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:27:48,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:27:48,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:27:48,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:27:48,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:27:48,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:27:48,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:27:48,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:27:48,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:27:48,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:27:48,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:27:48,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:27:48,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:27:48,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:27:48,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:27:48,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:27:48,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:27:48,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:27:48,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:27:48,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:27:48,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:27:48,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:27:48,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:27:48,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 01:27:48,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:27:48,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:27:48,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:27:48,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:27:48,404 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:27:48,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:27:48,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:27:48,405 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:27:48,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:27:48,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:27:48,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:27:48,406 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 01:27:48,407 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 01:27:48,407 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 01:27:48,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:27:48,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:27:48,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:27:48,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:27:48,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:27:48,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:27:48,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:27:48,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:27:48,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:27:48,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:27:48,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:27:48,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:27:48,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:27:48,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:27:48,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3444bab46e3acd40907f623c997f9115bc97543a [2020-11-30 01:27:48,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:27:48,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:27:48,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:27:48,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:27:48,798 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:27:48,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-11-30 01:27:48,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/data/4dcd81ce2/0626a376cd684f02846b6bfc850108c6/FLAG38547afa4 [2020-11-30 01:27:49,507 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:27:49,508 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-11-30 01:27:49,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/data/4dcd81ce2/0626a376cd684f02846b6bfc850108c6/FLAG38547afa4 [2020-11-30 01:27:49,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/data/4dcd81ce2/0626a376cd684f02846b6bfc850108c6 [2020-11-30 01:27:49,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:27:49,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 01:27:49,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:49,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:27:49,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:27:49,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:49" (1/1) ... [2020-11-30 01:27:49,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e9df0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:49, skipping insertion in model container [2020-11-30 01:27:49,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:49" (1/1) ... [2020-11-30 01:27:49,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:27:49,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:27:50,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:50,299 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:27:50,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:50,386 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:27:50,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50 WrapperNode [2020-11-30 01:27:50,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:50,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:27:50,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:27:50,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:27:50,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (1/1) ... [2020-11-30 01:27:50,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (1/1) ... [2020-11-30 01:27:50,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (1/1) ... [2020-11-30 01:27:50,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (1/1) ... [2020-11-30 01:27:50,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (1/1) ... [2020-11-30 01:27:50,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (1/1) ... [2020-11-30 01:27:50,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (1/1) ... [2020-11-30 01:27:50,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:27:50,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:27:50,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:27:50,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:27:50,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:27:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 01:27:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:27:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-30 01:27:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-30 01:27:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-30 01:27:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-30 01:27:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-30 01:27:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 01:27:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-30 01:27:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-30 01:27:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-30 01:27:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-30 01:27:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-30 01:27:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-30 01:27:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-30 01:27:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-30 01:27:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-30 01:27:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-30 01:27:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-30 01:27:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-30 01:27:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-30 01:27:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-30 01:27:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-30 01:27:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-30 01:27:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-30 01:27:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-30 01:27:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-30 01:27:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-30 01:27:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-30 01:27:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-30 01:27:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-30 01:27:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-30 01:27:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-30 01:27:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-30 01:27:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-30 01:27:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-30 01:27:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-30 01:27:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-30 01:27:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-30 01:27:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-30 01:27:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-30 01:27:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-30 01:27:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-30 01:27:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-30 01:27:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-30 01:27:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-30 01:27:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-30 01:27:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-30 01:27:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-30 01:27:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-30 01:27:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-30 01:27:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-30 01:27:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-30 01:27:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-30 01:27:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-30 01:27:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-30 01:27:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-30 01:27:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-30 01:27:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-30 01:27:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-30 01:27:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-30 01:27:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-30 01:27:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-30 01:27:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-30 01:27:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-30 01:27:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-30 01:27:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-30 01:27:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-30 01:27:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-30 01:27:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-30 01:27:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-30 01:27:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 01:27:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-30 01:27:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-30 01:27:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-30 01:27:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-30 01:27:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-30 01:27:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-30 01:27:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-30 01:27:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-30 01:27:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-30 01:27:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-30 01:27:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-30 01:27:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-30 01:27:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-30 01:27:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-30 01:27:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-30 01:27:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-30 01:27:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-30 01:27:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-30 01:27:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-30 01:27:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-30 01:27:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-30 01:27:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-30 01:27:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-30 01:27:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-30 01:27:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-30 01:27:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-30 01:27:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-30 01:27:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-30 01:27:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-30 01:27:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-30 01:27:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-30 01:27:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-30 01:27:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-30 01:27:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-30 01:27:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-30 01:27:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-30 01:27:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-30 01:27:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-30 01:27:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-30 01:27:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-30 01:27:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-30 01:27:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-30 01:27:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-30 01:27:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 01:27:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 01:27:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:27:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 01:27:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:27:51,166 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:27:51,166 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-30 01:27:51,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:51 BoogieIcfgContainer [2020-11-30 01:27:51,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:27:51,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:27:51,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:27:51,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:27:51,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:27:49" (1/3) ... [2020-11-30 01:27:51,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1c1f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:51, skipping insertion in model container [2020-11-30 01:27:51,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:50" (2/3) ... [2020-11-30 01:27:51,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1c1f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:51, skipping insertion in model container [2020-11-30 01:27:51,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:51" (3/3) ... [2020-11-30 01:27:51,180 INFO L111 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2020-11-30 01:27:51,193 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:27:51,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-30 01:27:51,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-30 01:27:51,240 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:27:51,241 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 01:27:51,241 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:27:51,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:27:51,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:27:51,242 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:27:51,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:27:51,242 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:27:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-30 01:27:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:27:51,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:51,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:51,272 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 01:27:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:51,280 INFO L82 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2020-11-30 01:27:51,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:51,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833623828] [2020-11-30 01:27:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:27:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:51,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833623828] [2020-11-30 01:27:51,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:51,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:51,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292815915] [2020-11-30 01:27:51,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:51,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:51,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:51,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:51,562 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-11-30 01:27:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:51,757 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-30 01:27:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:27:51,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 01:27:51,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:51,769 INFO L225 Difference]: With dead ends: 29 [2020-11-30 01:27:51,769 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 01:27:51,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:27:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 01:27:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 01:27:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:27:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-30 01:27:51,820 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2020-11-30 01:27:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:51,820 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-30 01:27:51,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-30 01:27:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:27:51,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:51,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:51,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:27:51,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 01:27:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:51,823 INFO L82 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2020-11-30 01:27:51,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:51,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665899645] [2020-11-30 01:27:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:51,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:27:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:51,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665899645] [2020-11-30 01:27:51,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:51,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:51,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887584527] [2020-11-30 01:27:51,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:51,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:51,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:51,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:51,911 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2020-11-30 01:27:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:52,005 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-30 01:27:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:52,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 01:27:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:52,007 INFO L225 Difference]: With dead ends: 25 [2020-11-30 01:27:52,007 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 01:27:52,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 01:27:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 01:27:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 01:27:52,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-30 01:27:52,015 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2020-11-30 01:27:52,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:52,015 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-30 01:27:52,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-30 01:27:52,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:27:52,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:52,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:52,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:27:52,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 01:27:52,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:52,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2020-11-30 01:27:52,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:52,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993892703] [2020-11-30 01:27:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:27:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:52,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993892703] [2020-11-30 01:27:52,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:52,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:52,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237016872] [2020-11-30 01:27:52,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:52,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:52,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:52,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:52,129 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2020-11-30 01:27:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:52,197 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-30 01:27:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:52,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 01:27:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:52,200 INFO L225 Difference]: With dead ends: 24 [2020-11-30 01:27:52,200 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 01:27:52,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:52,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 01:27:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 01:27:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 01:27:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-30 01:27:52,205 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2020-11-30 01:27:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:52,206 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-30 01:27:52,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-30 01:27:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:27:52,209 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:52,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:52,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:27:52,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 01:27:52,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:52,213 INFO L82 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2020-11-30 01:27:52,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:52,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326755569] [2020-11-30 01:27:52,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:27:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:52,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326755569] [2020-11-30 01:27:52,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:52,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:52,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601188942] [2020-11-30 01:27:52,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:52,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:52,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:52,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:52,309 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2020-11-30 01:27:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:52,364 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-30 01:27:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:52,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 01:27:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:52,366 INFO L225 Difference]: With dead ends: 22 [2020-11-30 01:27:52,366 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 01:27:52,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 01:27:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-30 01:27:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 01:27:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-30 01:27:52,371 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2020-11-30 01:27:52,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:52,371 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-30 01:27:52,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-30 01:27:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:27:52,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:52,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:52,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:27:52,373 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 01:27:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:52,374 INFO L82 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2020-11-30 01:27:52,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:52,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280417759] [2020-11-30 01:27:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:27:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:52,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280417759] [2020-11-30 01:27:52,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:52,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:27:52,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541171948] [2020-11-30 01:27:52,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:27:52,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:52,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:27:52,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:27:52,516 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2020-11-30 01:27:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:52,620 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-30 01:27:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:27:52,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-30 01:27:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:52,622 INFO L225 Difference]: With dead ends: 20 [2020-11-30 01:27:52,622 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 01:27:52,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:27:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 01:27:52,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 01:27:52,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 01:27:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-30 01:27:52,629 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-11-30 01:27:52,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:52,629 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-30 01:27:52,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:27:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-30 01:27:52,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:27:52,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:52,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:52,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:27:52,633 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 01:27:52,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:52,633 INFO L82 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2020-11-30 01:27:52,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:52,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793777948] [2020-11-30 01:27:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:27:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:52,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793777948] [2020-11-30 01:27:52,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:52,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:52,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601059953] [2020-11-30 01:27:52,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:52,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:52,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:52,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:52,740 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-11-30 01:27:52,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:52,800 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-30 01:27:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:52,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 01:27:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:52,802 INFO L225 Difference]: With dead ends: 22 [2020-11-30 01:27:52,802 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 01:27:52,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 01:27:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-30 01:27:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 01:27:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-30 01:27:52,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-11-30 01:27:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:52,807 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-30 01:27:52,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-30 01:27:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:27:52,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:52,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:52,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:27:52,809 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 01:27:52,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:52,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2020-11-30 01:27:52,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:52,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546387023] [2020-11-30 01:27:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:27:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:52,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546387023] [2020-11-30 01:27:52,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:52,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:27:52,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450048199] [2020-11-30 01:27:52,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:27:52,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:52,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:27:52,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:27:52,975 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-11-30 01:27:53,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:53,069 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-11-30 01:27:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:27:53,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 01:27:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:53,070 INFO L225 Difference]: With dead ends: 21 [2020-11-30 01:27:53,070 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 01:27:53,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:27:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 01:27:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 01:27:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 01:27:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2020-11-30 01:27:53,074 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2020-11-30 01:27:53,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:53,075 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2020-11-30 01:27:53,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:27:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-11-30 01:27:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:27:53,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:53,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:53,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:27:53,076 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 01:27:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:53,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2020-11-30 01:27:53,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:53,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461296504] [2020-11-30 01:27:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:27:53,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:27:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:27:53,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:27:53,173 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:27:53,173 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:27:53,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:27:53,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:27:53 BoogieIcfgContainer [2020-11-30 01:27:53,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:27:53,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:27:53,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:27:53,214 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:27:53,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:51" (3/4) ... [2020-11-30 01:27:53,217 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:27:53,264 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0d3b55b8-131d-4e4f-8955-c321f8d94baf/bin/uautomizer/witness.graphml [2020-11-30 01:27:53,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:27:53,266 INFO L168 Benchmark]: Toolchain (without parser) took 3504.39 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 80.9 MB in the end (delta: -22.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:27:53,267 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 96.5 MB. Free memory is still 75.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:27:53,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.39 ms. Allocated memory is still 96.5 MB. Free memory was 58.2 MB in the beginning and 62.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:53,269 INFO L168 Benchmark]: Boogie Preprocessor took 54.03 ms. Allocated memory is still 96.5 MB. Free memory was 62.2 MB in the beginning and 59.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:53,270 INFO L168 Benchmark]: RCFGBuilder took 725.63 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.7 MB in the beginning and 82.3 MB in the end (delta: -22.6 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:53,270 INFO L168 Benchmark]: TraceAbstraction took 2041.81 ms. Allocated memory is still 117.4 MB. Free memory was 82.3 MB in the beginning and 82.0 MB in the end (delta: 297.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:27:53,271 INFO L168 Benchmark]: Witness Printer took 50.73 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 80.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:53,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 96.5 MB. Free memory is still 75.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 613.39 ms. Allocated memory is still 96.5 MB. Free memory was 58.2 MB in the beginning and 62.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.03 ms. Allocated memory is still 96.5 MB. Free memory was 62.2 MB in the beginning and 59.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 725.63 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.7 MB in the beginning and 82.3 MB in the end (delta: -22.6 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2041.81 ms. Allocated memory is still 117.4 MB. Free memory was 82.3 MB in the beginning and 82.0 MB in the end (delta: 297.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 50.73 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 80.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L550] COND TRUE adressX == adressY VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 112 SDslu, 82 SDs, 0 SdLazy, 210 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 2442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...