./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.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_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/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 978f701fee046cd9a3f43bfb12d114d1876d2f10 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:09:34,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:09:34,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:09:34,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:09:34,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:09:34,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:09:34,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:09:34,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:09:34,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:09:34,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:09:34,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:09:34,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:09:34,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:09:34,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:09:34,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:09:34,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:09:34,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:09:34,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:09:34,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:09:34,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:09:34,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:09:34,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:09:34,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:09:34,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:09:34,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:09:34,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:09:34,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:09:34,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:09:34,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:09:34,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:09:34,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:09:34,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:09:34,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:09:34,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:09:34,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:09:34,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:09:34,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:09:34,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:09:34,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:09:34,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:09:34,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:09:34,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:09:34,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:09:34,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:09:34,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:09:34,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:09:34,695 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:09:34,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:09:34,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:09:34,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:09:34,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:09:34,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:09:34,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:09:34,699 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:09:34,700 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:09:34,700 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:09:34,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:09:34,700 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:09:34,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:09:34,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:09:34,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:09:34,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:09:34,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:09:34,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:09:34,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:09:34,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:09:34,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:09:34,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:09:34,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:09:34,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:09:34,703 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_df20f048-c446-4c80-ae87-6917d403f1d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 978f701fee046cd9a3f43bfb12d114d1876d2f10 [2020-11-28 03:09:34,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:09:35,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:09:35,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:09:35,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:09:35,007 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:09:35,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2020-11-28 03:09:35,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/data/32f2218de/e4e666a6672a4b7fb80b5eeafb372821/FLAGa313d0e18 [2020-11-28 03:09:35,628 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:09:35,633 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2020-11-28 03:09:35,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/data/32f2218de/e4e666a6672a4b7fb80b5eeafb372821/FLAGa313d0e18 [2020-11-28 03:09:35,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/data/32f2218de/e4e666a6672a4b7fb80b5eeafb372821 [2020-11-28 03:09:35,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:09:35,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:09:35,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:35,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:09:35,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:09:35,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:35" (1/1) ... [2020-11-28 03:09:35,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d94d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:35, skipping insertion in model container [2020-11-28 03:09:35,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:35" (1/1) ... [2020-11-28 03:09:35,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:09:35,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:09:36,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:36,369 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:09:36,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:36,481 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:09:36,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36 WrapperNode [2020-11-28 03:09:36,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:36,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:09:36,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:09:36,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:09:36,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (1/1) ... [2020-11-28 03:09:36,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (1/1) ... [2020-11-28 03:09:36,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (1/1) ... [2020-11-28 03:09:36,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (1/1) ... [2020-11-28 03:09:36,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (1/1) ... [2020-11-28 03:09:36,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (1/1) ... [2020-11-28 03:09:36,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (1/1) ... [2020-11-28 03:09:36,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:09:36,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:09:36,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:09:36,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:09:36,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:09:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:09:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:09:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:09:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:09:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:09:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:09:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:09:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:09:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-28 03:09:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:09:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:09:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:09:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:09:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:09:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:09:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:09:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:09:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:09:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:09:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:09:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:09:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:09:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:09:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:09:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:09:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:09:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:09:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:09:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:09:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:09:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:09:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:09:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:09:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:09:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:09:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:09:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:09:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:09:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:09:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:09:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:09:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:09:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:09:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:09:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:09:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:09:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:09:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:09:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:09:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:09:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:09:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:09:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:09:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:09:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:09:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:09:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:09:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:09:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:09:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:09:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:09:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:09:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:09:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:09:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:09:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:09:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:09:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:09:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:09:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:09:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:09:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:09:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:09:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:09:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:09:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:09:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:09:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:09:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:09:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:09:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:09:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:09:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:09:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:09:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:09:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:09:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:09:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:09:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:09:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:09:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:09:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:09:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:09:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:09:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:09:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:09:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:09:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:09:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:09:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:09:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:09:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:09:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:09:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:09:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:09:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:09:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:09:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:09:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:09:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:09:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:09:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:09:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:09:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:09:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:09:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-28 03:09:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:09:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:09:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:09:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:09:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:09:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:09:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:09:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:09:37,314 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:09:37,315 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-28 03:09:37,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:37 BoogieIcfgContainer [2020-11-28 03:09:37,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:09:37,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:09:37,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:09:37,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:09:37,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:09:35" (1/3) ... [2020-11-28 03:09:37,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787e87e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:37, skipping insertion in model container [2020-11-28 03:09:37,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:36" (2/3) ... [2020-11-28 03:09:37,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787e87e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:37, skipping insertion in model container [2020-11-28 03:09:37,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:37" (3/3) ... [2020-11-28 03:09:37,330 INFO L111 eAbstractionObserver]: Analyzing ICFG 960521-1_1-1.i [2020-11-28 03:09:37,339 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:09:37,343 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-11-28 03:09:37,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-11-28 03:09:37,372 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:09:37,372 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:09:37,373 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:09:37,373 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:09:37,373 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:09:37,373 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:09:37,373 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:09:37,373 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:09:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-11-28 03:09:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:09:37,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:37,397 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:37,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,403 INFO L82 PathProgramCache]: Analyzing trace with hash -334073084, now seen corresponding path program 1 times [2020-11-28 03:09:37,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377472329] [2020-11-28 03:09:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:37,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377472329] [2020-11-28 03:09:37,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:37,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:09:37,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257160551] [2020-11-28 03:09:37,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:09:37,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:37,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:09:37,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:09:37,660 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-11-28 03:09:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:37,827 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-11-28 03:09:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:09:37,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:09:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:37,836 INFO L225 Difference]: With dead ends: 62 [2020-11-28 03:09:37,837 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 03:09:37,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:09:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 03:09:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-28 03:09:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 03:09:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-11-28 03:09:37,892 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 9 [2020-11-28 03:09:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:37,893 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-11-28 03:09:37,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:09:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-11-28 03:09:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:09:37,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:37,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:09:37,898 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1766545344, now seen corresponding path program 1 times [2020-11-28 03:09:37,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375111329] [2020-11-28 03:09:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:38,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375111329] [2020-11-28 03:09:38,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:38,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:09:38,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147336224] [2020-11-28 03:09:38,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:38,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:38,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:38,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:38,056 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 4 states. [2020-11-28 03:09:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:38,242 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-11-28 03:09:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:09:38,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:09:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:38,244 INFO L225 Difference]: With dead ends: 58 [2020-11-28 03:09:38,244 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 03:09:38,245 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 [2020-11-28 03:09:38,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 03:09:38,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-11-28 03:09:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 03:09:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-11-28 03:09:38,252 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 10 [2020-11-28 03:09:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:38,252 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-11-28 03:09:38,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-11-28 03:09:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:09:38,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:38,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:38,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:09:38,254 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:38,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:38,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1766545343, now seen corresponding path program 1 times [2020-11-28 03:09:38,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:38,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534223394] [2020-11-28 03:09:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:38,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534223394] [2020-11-28 03:09:38,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:38,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:09:38,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230412152] [2020-11-28 03:09:38,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:38,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:38,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:38,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:38,383 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 5 states. [2020-11-28 03:09:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:38,686 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2020-11-28 03:09:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:38,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:09:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:38,692 INFO L225 Difference]: With dead ends: 109 [2020-11-28 03:09:38,692 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:09:38,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:09:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:09:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 62. [2020-11-28 03:09:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-28 03:09:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-11-28 03:09:38,706 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 10 [2020-11-28 03:09:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:38,711 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-11-28 03:09:38,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-11-28 03:09:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:09:38,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:38,712 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:38,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:09:38,713 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:38,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1136421434, now seen corresponding path program 1 times [2020-11-28 03:09:38,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:38,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527481370] [2020-11-28 03:09:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:38,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527481370] [2020-11-28 03:09:38,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582566048] [2020-11-28 03:09:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:39,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:09:39,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:39,216 INFO L350 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-11-28 03:09:39,216 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2020-11-28 03:09:39,217 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:39,226 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:09:39,233 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:09:39,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:29 [2020-11-28 03:09:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:39,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:39,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-11-28 03:09:39,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335530486] [2020-11-28 03:09:39,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:39,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:39,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:39,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:09:39,285 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 5 states. [2020-11-28 03:09:39,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:39,439 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2020-11-28 03:09:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:09:39,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:09:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:39,445 INFO L225 Difference]: With dead ends: 108 [2020-11-28 03:09:39,445 INFO L226 Difference]: Without dead ends: 108 [2020-11-28 03:09:39,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:39,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-28 03:09:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 57. [2020-11-28 03:09:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:09:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-11-28 03:09:39,452 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 12 [2020-11-28 03:09:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:39,456 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-11-28 03:09:39,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-11-28 03:09:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:09:39,457 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:39,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:39,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:39,677 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:39,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1785184100, now seen corresponding path program 1 times [2020-11-28 03:09:39,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:39,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476468114] [2020-11-28 03:09:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:39,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:39,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476468114] [2020-11-28 03:09:39,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:39,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:09:39,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890104734] [2020-11-28 03:09:39,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:39,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:39,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:39,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:39,774 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 4 states. [2020-11-28 03:09:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:39,987 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-11-28 03:09:39,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:09:39,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 03:09:39,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:39,989 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:09:39,990 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 03:09:39,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 03:09:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-28 03:09:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 03:09:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-11-28 03:09:39,995 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 15 [2020-11-28 03:09:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:39,995 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-11-28 03:09:39,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:39,995 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-11-28 03:09:39,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:09:39,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:39,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:39,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:09:39,996 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:40,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1785184099, now seen corresponding path program 1 times [2020-11-28 03:09:40,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:40,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519478782] [2020-11-28 03:09:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:40,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:40,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519478782] [2020-11-28 03:09:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:40,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:40,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605553846] [2020-11-28 03:09:40,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:40,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:40,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:40,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:40,136 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-11-28 03:09:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:40,539 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-11-28 03:09:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:09:40,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:09:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:40,541 INFO L225 Difference]: With dead ends: 99 [2020-11-28 03:09:40,541 INFO L226 Difference]: Without dead ends: 99 [2020-11-28 03:09:40,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-28 03:09:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2020-11-28 03:09:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:09:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-11-28 03:09:40,549 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 15 [2020-11-28 03:09:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:40,550 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-11-28 03:09:40,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-11-28 03:09:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:09:40,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:40,551 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:40,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:09:40,551 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:40,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash 139066936, now seen corresponding path program 1 times [2020-11-28 03:09:40,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:40,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116416086] [2020-11-28 03:09:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:40,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:40,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116416086] [2020-11-28 03:09:40,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735379778] [2020-11-28 03:09:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:40,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:09:40,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:40,904 INFO L350 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-11-28 03:09:40,905 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2020-11-28 03:09:40,905 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:40,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:09:40,923 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:09:40,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:35 [2020-11-28 03:09:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:40,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:40,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-11-28 03:09:40,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595277584] [2020-11-28 03:09:40,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:40,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:40,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:40,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:09:40,998 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 6 states. [2020-11-28 03:09:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:41,195 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-11-28 03:09:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:41,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 03:09:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:41,197 INFO L225 Difference]: With dead ends: 104 [2020-11-28 03:09:41,197 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 03:09:41,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:09:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 03:09:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 71. [2020-11-28 03:09:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-28 03:09:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-11-28 03:09:41,205 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 17 [2020-11-28 03:09:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:41,205 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-11-28 03:09:41,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-11-28 03:09:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:09:41,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:41,206 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:41,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:41,417 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:41,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:41,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2134408578, now seen corresponding path program 1 times [2020-11-28 03:09:41,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:41,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402656480] [2020-11-28 03:09:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:41,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402656480] [2020-11-28 03:09:41,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856070659] [2020-11-28 03:09:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:41,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:09:41,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:41,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:41,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-11-28 03:09:41,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130851948] [2020-11-28 03:09:41,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:41,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:41,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:41,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:41,769 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 5 states. [2020-11-28 03:09:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:41,834 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2020-11-28 03:09:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:09:41,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:09:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:41,836 INFO L225 Difference]: With dead ends: 97 [2020-11-28 03:09:41,836 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:09:41,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:09:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-11-28 03:09:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 03:09:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-11-28 03:09:41,849 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 18 [2020-11-28 03:09:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:41,850 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-11-28 03:09:41,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-11-28 03:09:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:09:41,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:41,851 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:42,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:42,052 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:42,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:42,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1700324605, now seen corresponding path program 1 times [2020-11-28 03:09:42,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:42,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659617362] [2020-11-28 03:09:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:42,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:42,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659617362] [2020-11-28 03:09:42,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326514826] [2020-11-28 03:09:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:42,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:09:42,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:42,414 INFO L350 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-11-28 03:09:42,415 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2020-11-28 03:09:42,415 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:42,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:09:42,430 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:09:42,430 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:35 [2020-11-28 03:09:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:42,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:09:42,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-11-28 03:09:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34212043] [2020-11-28 03:09:42,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:09:42,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:09:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:09:42,536 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 12 states. [2020-11-28 03:09:43,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:43,230 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2020-11-28 03:09:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:09:43,230 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-11-28 03:09:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:43,233 INFO L225 Difference]: With dead ends: 112 [2020-11-28 03:09:43,233 INFO L226 Difference]: Without dead ends: 112 [2020-11-28 03:09:43,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:09:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-28 03:09:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 73. [2020-11-28 03:09:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:09:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-11-28 03:09:43,241 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 20 [2020-11-28 03:09:43,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:43,242 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-11-28 03:09:43,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:09:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-11-28 03:09:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:09:43,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:43,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:43,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:43,469 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:43,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash -247582013, now seen corresponding path program 1 times [2020-11-28 03:09:43,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:43,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518776931] [2020-11-28 03:09:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:43,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:09:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-28 03:09:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:09:43,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518776931] [2020-11-28 03:09:43,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:43,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:43,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134648915] [2020-11-28 03:09:43,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:43,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:43,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:43,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:43,613 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2020-11-28 03:09:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:43,903 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-11-28 03:09:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:09:43,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 03:09:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:43,904 INFO L225 Difference]: With dead ends: 71 [2020-11-28 03:09:43,904 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 03:09:43,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:09:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 03:09:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-28 03:09:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-28 03:09:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-11-28 03:09:43,909 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 22 [2020-11-28 03:09:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:43,909 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-11-28 03:09:43,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-11-28 03:09:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:09:43,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:43,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:43,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:09:43,911 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:09:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash -247582012, now seen corresponding path program 1 times [2020-11-28 03:09:43,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:43,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139336273] [2020-11-28 03:09:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:43,926 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:43,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:43,977 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:43,977 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:09:43,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:09:44,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:09:44 BoogieIcfgContainer [2020-11-28 03:09:44,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:09:44,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:09:44,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:09:44,038 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:09:44,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:37" (3/4) ... [2020-11-28 03:09:44,040 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:09:44,102 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_df20f048-c446-4c80-ae87-6917d403f1d7/bin/uautomizer/witness.graphml [2020-11-28 03:09:44,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:09:44,107 INFO L168 Benchmark]: Toolchain (without parser) took 8191.86 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 91.5 MB in the beginning and 60.5 MB in the end (delta: 31.0 MB). Peak memory consumption was 84.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:44,107 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 83.9 MB. Free memory was 42.1 MB in the beginning and 42.1 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:44,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.18 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 85.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:44,108 INFO L168 Benchmark]: Boogie Preprocessor took 58.67 ms. Allocated memory is still 119.5 MB. Free memory was 84.7 MB in the beginning and 82.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:44,108 INFO L168 Benchmark]: RCFGBuilder took 774.84 ms. Allocated memory is still 119.5 MB. Free memory was 82.3 MB in the beginning and 72.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:44,109 INFO L168 Benchmark]: TraceAbstraction took 6716.94 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 71.7 MB in the beginning and 62.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:44,109 INFO L168 Benchmark]: Witness Printer took 65.99 ms. Allocated memory is still 174.1 MB. Free memory was 62.6 MB in the beginning and 60.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:44,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 83.9 MB. Free memory was 42.1 MB in the beginning and 42.1 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 567.18 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 85.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.67 ms. Allocated memory is still 119.5 MB. Free memory was 84.7 MB in the beginning and 82.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 774.84 ms. Allocated memory is still 119.5 MB. Free memory was 82.3 MB in the beginning and 72.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6716.94 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 71.7 MB in the beginning and 62.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.99 ms. Allocated memory is still 174.1 MB. Free memory was 62.6 MB in the beginning and 60.5 MB in the end (delta: 2.1 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: 544]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L523] int *a, *b; [L524] int n; VAL [\old(a)=56, \old(a)=53, \old(b)=57, \old(b)=50, \old(n)=55, a={0:0}, b={0:0}, n=0] [L536] n = 1 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={0:0}, b={0:0}, n=1] [L537] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L540] a = malloc(n * sizeof(*a)) [L541] b = malloc(n * sizeof(*b)) [L542] EXPR b++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, b++={-2:0}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L542] *b++ = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, b++={-2:0}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L543] CALL foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, n=1] [L528] int i; [L529] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L529] COND TRUE i < n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L530] a[i] = n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L529] i++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=1, n=1] [L529] COND FALSE !(i < n) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=1, n=1] [L531] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L531] COND FALSE !(i < n - 1) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, i=0, n=1] [L543] RET foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={-1:0}, b={-2:4}, malloc(n * sizeof(*a))={-1:0}, malloc(n * sizeof(*b))={-2:0}, n=1] [L544] b[-2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 82 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 558 SDtfs, 836 SDslu, 760 SDs, 0 SdLazy, 1083 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 222 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 21313 SizeOfPredicates, 16 NumberOfNonLiveVariables, 650 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 10/21 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...