./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.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_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/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 822411a57a10ce043cb0121fce52bdc7e9506783 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:25:32,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:25:32,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:25:32,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:25:32,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:25:32,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:25:32,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:25:32,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:25:32,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:25:32,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:25:32,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:25:32,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:25:32,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:25:32,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:25:32,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:25:32,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:25:32,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:25:32,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:25:32,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:25:32,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:25:32,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:25:32,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:25:32,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:25:32,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:25:32,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:25:32,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:25:32,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:25:32,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:25:32,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:25:32,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:25:32,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:25:32,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:25:32,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:25:32,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:25:32,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:25:32,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:25:32,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:25:32,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:25:32,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:25:32,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:25:32,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:25:32,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 21:25:32,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:25:32,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:25:32,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:25:32,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:25:32,806 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:25:32,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:25:32,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:25:32,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:25:32,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:25:32,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:25:32,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:25:32,809 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 21:25:32,809 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 21:25:32,809 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 21:25:32,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:25:32,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 21:25:32,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:25:32,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:25:32,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:25:32,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:25:32,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:25:32,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:25:32,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:25:32,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:25:32,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:25:32,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:25:32,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:25:32,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:25:32,812 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_4904e29f-6726-474e-b3af-b6db44ee7cd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2020-11-29 21:25:33,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:25:33,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:25:33,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:25:33,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:25:33,189 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:25:33,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-11-29 21:25:33,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/data/e65eff159/6c4e374ee6214be6b6d7195287d26a97/FLAG74543a6e9 [2020-11-29 21:25:33,922 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:25:33,923 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-11-29 21:25:33,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/data/e65eff159/6c4e374ee6214be6b6d7195287d26a97/FLAG74543a6e9 [2020-11-29 21:25:34,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/data/e65eff159/6c4e374ee6214be6b6d7195287d26a97 [2020-11-29 21:25:34,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:25:34,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 21:25:34,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:25:34,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:25:34,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:25:34,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe43d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34, skipping insertion in model container [2020-11-29 21:25:34,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:25:34,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:25:34,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:25:34,601 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:25:34,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:25:34,734 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:25:34,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34 WrapperNode [2020-11-29 21:25:34,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:25:34,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:25:34,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:25:34,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:25:34,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (1/1) ... [2020-11-29 21:25:34,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:25:34,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:25:34,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:25:34,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:25:34,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/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 [2020-11-29 21:25:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 21:25:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:25:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 21:25:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 21:25:34,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 21:25:34,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 21:25:34,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 21:25:34,930 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2020-11-29 21:25:34,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 21:25:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 21:25:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 21:25:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 21:25:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 21:25:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 21:25:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 21:25:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 21:25:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 21:25:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 21:25:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 21:25:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 21:25:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 21:25:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 21:25:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 21:25:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 21:25:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 21:25:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 21:25:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 21:25:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 21:25:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 21:25:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 21:25:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 21:25:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 21:25:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 21:25:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 21:25:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 21:25:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 21:25:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 21:25:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 21:25:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 21:25:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 21:25:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 21:25:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 21:25:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 21:25:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 21:25:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 21:25:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 21:25:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 21:25:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 21:25:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 21:25:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 21:25:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 21:25:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 21:25:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 21:25:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 21:25:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 21:25:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 21:25:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 21:25:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 21:25:34,942 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 21:25:34,942 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 21:25:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 21:25:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 21:25:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 21:25:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 21:25:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 21:25:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 21:25:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 21:25:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 21:25:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 21:25:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 21:25:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 21:25:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 21:25:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 21:25:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 21:25:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 21:25:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 21:25:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 21:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 21:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 21:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 21:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 21:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 21:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 21:25:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 21:25:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 21:25:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 21:25:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 21:25:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 21:25:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 21:25:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 21:25:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 21:25:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 21:25:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 21:25:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 21:25:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 21:25:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 21:25:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 21:25:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 21:25:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 21:25:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 21:25:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 21:25:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 21:25:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 21:25:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 21:25:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 21:25:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 21:25:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 21:25:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 21:25:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 21:25:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 21:25:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 21:25:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 21:25:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 21:25:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 21:25:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 21:25:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 21:25:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 21:25:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2020-11-29 21:25:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:25:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 21:25:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:25:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:25:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 21:25:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:25:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:25:35,497 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:25:35,497 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-29 21:25:35,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:25:35 BoogieIcfgContainer [2020-11-29 21:25:35,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:25:35,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:25:35,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:25:35,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:25:35,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:25:34" (1/3) ... [2020-11-29 21:25:35,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a78c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:25:35, skipping insertion in model container [2020-11-29 21:25:35,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:25:34" (2/3) ... [2020-11-29 21:25:35,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a78c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:25:35, skipping insertion in model container [2020-11-29 21:25:35,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:25:35" (3/3) ... [2020-11-29 21:25:35,507 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2020-11-29 21:25:35,518 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:25:35,523 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 21:25:35,535 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 21:25:35,556 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:25:35,556 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 21:25:35,556 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:25:35,556 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:25:35,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:25:35,556 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:25:35,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:25:35,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:25:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-29 21:25:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:25:35,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:35,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:35,577 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:35,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2020-11-29 21:25:35,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:35,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646446918] [2020-11-29 21:25:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:35,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:35,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646446918] [2020-11-29 21:25:35,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:35,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:25:35,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651197372] [2020-11-29 21:25:35,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:25:35,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:25:35,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:25:35,840 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-11-29 21:25:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:36,088 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-29 21:25:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:25:36,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 21:25:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:36,110 INFO L225 Difference]: With dead ends: 28 [2020-11-29 21:25:36,111 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 21:25:36,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:25:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 21:25:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-29 21:25:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 21:25:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-29 21:25:36,179 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2020-11-29 21:25:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:36,198 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-29 21:25:36,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:25:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-29 21:25:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:25:36,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:36,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:36,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:25:36,214 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:36,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:36,215 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2020-11-29 21:25:36,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:36,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519583215] [2020-11-29 21:25:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:36,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519583215] [2020-11-29 21:25:36,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:36,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:25:36,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136311658] [2020-11-29 21:25:36,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:25:36,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:25:36,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:25:36,387 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 7 states. [2020-11-29 21:25:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:36,593 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-29 21:25:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:25:36,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-29 21:25:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:36,595 INFO L225 Difference]: With dead ends: 21 [2020-11-29 21:25:36,595 INFO L226 Difference]: Without dead ends: 21 [2020-11-29 21:25:36,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:25:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-29 21:25:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-29 21:25:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 21:25:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-29 21:25:36,600 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2020-11-29 21:25:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:36,600 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-29 21:25:36,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:25:36,600 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-29 21:25:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:25:36,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:36,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:36,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:25:36,602 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:36,604 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2020-11-29 21:25:36,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:36,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585988450] [2020-11-29 21:25:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:36,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:36,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585988450] [2020-11-29 21:25:36,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:36,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:25:36,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454334126] [2020-11-29 21:25:36,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:25:36,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:36,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:25:36,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:25:36,816 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-11-29 21:25:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:37,068 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-11-29 21:25:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:25:37,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-29 21:25:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:37,072 INFO L225 Difference]: With dead ends: 27 [2020-11-29 21:25:37,072 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 21:25:37,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:25:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 21:25:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-11-29 21:25:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 21:25:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-29 21:25:37,084 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2020-11-29 21:25:37,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:37,085 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-29 21:25:37,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:25:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-29 21:25:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 21:25:37,087 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:37,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:37,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:25:37,092 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:37,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:37,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2020-11-29 21:25:37,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:37,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983874355] [2020-11-29 21:25:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 21:25:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:37,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983874355] [2020-11-29 21:25:37,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:37,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 21:25:37,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934828761] [2020-11-29 21:25:37,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:25:37,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:37,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:25:37,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:25:37,286 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2020-11-29 21:25:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:37,597 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-29 21:25:37,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 21:25:37,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-29 21:25:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:37,599 INFO L225 Difference]: With dead ends: 34 [2020-11-29 21:25:37,599 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 21:25:37,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-11-29 21:25:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 21:25:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-11-29 21:25:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 21:25:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-11-29 21:25:37,613 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-11-29 21:25:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:37,613 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-11-29 21:25:37,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:25:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-11-29 21:25:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 21:25:37,614 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:37,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:37,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:25:37,615 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:37,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2020-11-29 21:25:37,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:37,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167883767] [2020-11-29 21:25:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 21:25:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:37,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167883767] [2020-11-29 21:25:37,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:37,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 21:25:37,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31987233] [2020-11-29 21:25:37,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:25:37,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:37,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:25:37,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:25:37,809 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-11-29 21:25:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:38,090 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-29 21:25:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:25:38,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-29 21:25:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:38,091 INFO L225 Difference]: With dead ends: 28 [2020-11-29 21:25:38,092 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 21:25:38,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-11-29 21:25:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 21:25:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-11-29 21:25:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 21:25:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-11-29 21:25:38,096 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2020-11-29 21:25:38,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:38,096 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-11-29 21:25:38,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:25:38,097 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-11-29 21:25:38,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:25:38,097 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:38,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:38,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:25:38,098 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:38,098 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2020-11-29 21:25:38,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:38,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438795831] [2020-11-29 21:25:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:38,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:38,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438795831] [2020-11-29 21:25:38,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184919345] [2020-11-29 21:25:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/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 [2020-11-29 21:25:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:38,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:25:38,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:25:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:38,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:25:38,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-11-29 21:25:38,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409219164] [2020-11-29 21:25:38,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:25:38,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:38,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:25:38,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:25:38,649 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2020-11-29 21:25:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:39,011 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-11-29 21:25:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:25:39,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-29 21:25:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:39,013 INFO L225 Difference]: With dead ends: 38 [2020-11-29 21:25:39,013 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 21:25:39,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-11-29 21:25:39,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 21:25:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-11-29 21:25:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 21:25:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-29 21:25:39,023 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2020-11-29 21:25:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:39,023 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-29 21:25:39,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:25:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-29 21:25:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:25:39,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:39,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:39,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 21:25:39,248 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:39,248 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2020-11-29 21:25:39,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:39,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523731398] [2020-11-29 21:25:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:39,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:39,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523731398] [2020-11-29 21:25:39,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967603894] [2020-11-29 21:25:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/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 [2020-11-29 21:25:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:39,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-29 21:25:39,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:25:39,743 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 21:25:39,746 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:25:39,757 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:25:39,758 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:25:39,758 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2020-11-29 21:25:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:40,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:25:40,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-11-29 21:25:40,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826188036] [2020-11-29 21:25:40,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 21:25:40,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:40,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 21:25:40,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-11-29 21:25:40,068 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 19 states. [2020-11-29 21:25:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:40,696 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-11-29 21:25:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:25:40,696 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2020-11-29 21:25:40,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:40,697 INFO L225 Difference]: With dead ends: 40 [2020-11-29 21:25:40,697 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 21:25:40,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2020-11-29 21:25:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 21:25:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-11-29 21:25:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 21:25:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-29 21:25:40,703 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2020-11-29 21:25:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:40,704 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-29 21:25:40,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 21:25:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-29 21:25:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 21:25:40,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:40,705 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:40,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:25:40,926 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:40,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:40,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2020-11-29 21:25:40,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:40,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942982983] [2020-11-29 21:25:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:41,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 21:25:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:25:41,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942982983] [2020-11-29 21:25:41,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:25:41,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:25:41,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113427636] [2020-11-29 21:25:41,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:25:41,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:41,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:25:41,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:25:41,043 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-11-29 21:25:41,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:41,143 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-11-29 21:25:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:25:41,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-29 21:25:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:41,144 INFO L225 Difference]: With dead ends: 38 [2020-11-29 21:25:41,144 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 21:25:41,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:25:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 21:25:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 21:25:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 21:25:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-29 21:25:41,147 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-11-29 21:25:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:41,148 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-29 21:25:41,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:25:41,148 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-29 21:25:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:25:41,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:25:41,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:25:41,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 21:25:41,149 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:25:41,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:25:41,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2020-11-29 21:25:41,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:25:41,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714878069] [2020-11-29 21:25:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:25:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:25:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:25:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:41,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714878069] [2020-11-29 21:25:41,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603465207] [2020-11-29 21:25:41,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/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 [2020-11-29 21:25:41,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:25:41,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:25:41,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2020-11-29 21:25:41,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:25:41,711 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 21:25:41,711 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:25:41,721 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:25:41,722 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:25:41,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2020-11-29 21:25:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:25:42,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:25:42,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2020-11-29 21:25:42,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323618970] [2020-11-29 21:25:42,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-29 21:25:42,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:25:42,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-29 21:25:42,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2020-11-29 21:25:42,226 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 23 states. [2020-11-29 21:25:42,954 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-11-29 21:25:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:25:43,330 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-29 21:25:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 21:25:43,331 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2020-11-29 21:25:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:25:43,331 INFO L225 Difference]: With dead ends: 27 [2020-11-29 21:25:43,331 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:25:43,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 21:25:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:25:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:25:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:25:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:25:43,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-29 21:25:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:25:43,333 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:25:43,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-29 21:25:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:25:43,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:25:43,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:25:43,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:25:43 BoogieIcfgContainer [2020-11-29 21:25:43,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:25:43,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:25:43,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:25:43,539 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:25:43,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:25:35" (3/4) ... [2020-11-29 21:25:43,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:25:43,553 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 21:25:43,553 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-29 21:25:43,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-29 21:25:43,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-29 21:25:43,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-29 21:25:43,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2020-11-29 21:25:43,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 21:25:43,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-29 21:25:43,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 21:25:43,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 21:25:43,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:25:43,560 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:25:43,617 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4904e29f-6726-474e-b3af-b6db44ee7cd9/bin/uautomizer/witness.graphml [2020-11-29 21:25:43,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:25:43,621 INFO L168 Benchmark]: Toolchain (without parser) took 9433.68 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 53.1 MB in the beginning and 62.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:25:43,622 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 73.4 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:25:43,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.87 ms. Allocated memory is still 88.1 MB. Free memory was 52.9 MB in the beginning and 64.9 MB in the end (delta: -12.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:25:43,623 INFO L168 Benchmark]: Boogie Preprocessor took 107.16 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 62.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:25:43,623 INFO L168 Benchmark]: RCFGBuilder took 654.01 ms. Allocated memory is still 88.1 MB. Free memory was 62.3 MB in the beginning and 59.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:25:43,623 INFO L168 Benchmark]: TraceAbstraction took 8038.56 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 59.2 MB in the beginning and 65.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:25:43,624 INFO L168 Benchmark]: Witness Printer took 81.11 ms. Allocated memory is still 130.0 MB. Free memory was 65.9 MB in the beginning and 62.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:25:43,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 73.4 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.87 ms. Allocated memory is still 88.1 MB. Free memory was 52.9 MB in the beginning and 64.9 MB in the end (delta: -12.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.16 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 62.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 654.01 ms. Allocated memory is still 88.1 MB. Free memory was 62.3 MB in the beginning and 59.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8038.56 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 59.2 MB in the beginning and 65.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 81.11 ms. Allocated memory is still 130.0 MB. Free memory was 65.9 MB in the beginning and 62.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.9s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 253 SDslu, 304 SDs, 0 SdLazy, 994 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 1 QuantifiedInterpolants, 23658 SizeOfPredicates, 26 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 7/34 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 correct! Received shutdown request...