./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC --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 0.2.0-7b2dab5 [2021-10-11 00:28:20,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:28:20,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:28:20,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:28:20,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:28:20,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:28:20,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:28:20,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:28:20,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:28:20,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:28:20,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:28:20,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:28:20,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:28:20,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:28:20,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:28:20,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:28:20,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:28:20,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:28:20,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:28:20,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:28:20,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:28:20,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:28:20,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:28:20,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:28:20,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:28:20,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:28:20,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:28:20,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:28:20,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:28:20,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:28:20,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:28:20,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:28:20,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:28:20,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:28:20,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:28:20,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:28:20,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:28:20,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:28:20,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:28:20,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:28:20,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:28:20,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-11 00:28:20,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:28:20,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:28:20,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:28:20,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:28:20,726 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:28:20,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:28:20,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:28:20,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:28:20,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:28:20,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:28:20,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:28:20,735 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 00:28:20,735 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 00:28:20,736 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 00:28:20,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:28:20,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 00:28:20,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:28:20,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:28:20,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:28:20,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:28:20,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:28:20,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:28:20,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:28:20,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:28:20,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:28:20,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:28:20,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:28:20,739 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_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2021-10-11 00:28:21,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:28:21,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:28:21,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:28:21,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:28:21,086 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:28:21,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-10-11 00:28:21,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/data/c6818b1a3/1ea2df70b8db48858de24ede03805f22/FLAG4e032df2d [2021-10-11 00:28:21,724 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:28:21,725 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-10-11 00:28:21,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/data/c6818b1a3/1ea2df70b8db48858de24ede03805f22/FLAG4e032df2d [2021-10-11 00:28:22,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/data/c6818b1a3/1ea2df70b8db48858de24ede03805f22 [2021-10-11 00:28:22,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:28:22,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-11 00:28:22,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:22,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:28:22,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:28:22,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8bd8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22, skipping insertion in model container [2021-10-11 00:28:22,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:28:22,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:28:22,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:22,397 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:28:22,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:22,513 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:28:22,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22 WrapperNode [2021-10-11 00:28:22,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:22,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:28:22,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:28:22,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:28:22,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (1/1) ... [2021-10-11 00:28:22,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:28:22,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:28:22,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:28:22,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:28:22,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:28:22,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-11 00:28:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:28:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-11 00:28:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-11 00:28:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-11 00:28:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-11 00:28:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-11 00:28:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2021-10-11 00:28:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-11 00:28:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-11 00:28:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-11 00:28:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-11 00:28:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-11 00:28:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-11 00:28:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-11 00:28:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-11 00:28:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-11 00:28:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-11 00:28:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-11 00:28:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-11 00:28:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-11 00:28:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-11 00:28:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-11 00:28:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-11 00:28:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-11 00:28:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-11 00:28:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-11 00:28:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-11 00:28:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-11 00:28:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-11 00:28:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-11 00:28:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-11 00:28:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-11 00:28:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-11 00:28:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-11 00:28:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-11 00:28:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-11 00:28:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-11 00:28:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-11 00:28:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-11 00:28:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-11 00:28:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-11 00:28:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-11 00:28:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-11 00:28:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-11 00:28:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-11 00:28:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-11 00:28:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-11 00:28:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-11 00:28:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-11 00:28:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-11 00:28:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-11 00:28:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-11 00:28:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-11 00:28:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-11 00:28:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-11 00:28:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-11 00:28:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-11 00:28:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-11 00:28:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-11 00:28:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-11 00:28:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-11 00:28:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-11 00:28:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-11 00:28:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-11 00:28:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-11 00:28:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-11 00:28:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-11 00:28:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-11 00:28:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-11 00:28:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-11 00:28:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-11 00:28:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-11 00:28:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-11 00:28:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-11 00:28:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-11 00:28:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-11 00:28:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-11 00:28:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-11 00:28:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-11 00:28:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-11 00:28:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-11 00:28:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-11 00:28:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-11 00:28:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-11 00:28:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-11 00:28:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-11 00:28:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-11 00:28:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-11 00:28:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-11 00:28:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-11 00:28:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-11 00:28:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-11 00:28:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-11 00:28:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-11 00:28:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-11 00:28:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-11 00:28:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-11 00:28:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-11 00:28:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-11 00:28:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-11 00:28:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-11 00:28:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-11 00:28:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-11 00:28:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-11 00:28:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-11 00:28:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-11 00:28:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-11 00:28:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-11 00:28:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-11 00:28:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-11 00:28:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-11 00:28:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-11 00:28:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-11 00:28:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-11 00:28:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-11 00:28:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-11 00:28:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2021-10-11 00:28:22,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:28:22,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-11 00:28:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:28:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:28:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-11 00:28:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:28:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:28:23,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:28:23,224 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-11 00:28:23,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:23 BoogieIcfgContainer [2021-10-11 00:28:23,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:28:23,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:28:23,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:28:23,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:28:23,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:28:22" (1/3) ... [2021-10-11 00:28:23,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d0d27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:23, skipping insertion in model container [2021-10-11 00:28:23,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:22" (2/3) ... [2021-10-11 00:28:23,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d0d27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:23, skipping insertion in model container [2021-10-11 00:28:23,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:23" (3/3) ... [2021-10-11 00:28:23,236 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2021-10-11 00:28:23,251 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:28:23,255 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 00:28:23,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:28:23,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:28:23,288 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 00:28:23,288 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:28:23,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:28:23,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:28:23,288 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:28:23,288 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:28:23,314 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:28:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-10-11 00:28:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:28:23,336 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:23,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:23,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:23,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:23,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2021-10-11 00:28:23,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:23,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265602473] [2021-10-11 00:28:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:23,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:23,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265602473] [2021-10-11 00:28:23,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:23,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:28:23,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471813306] [2021-10-11 00:28:23,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:28:23,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:23,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:28:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:28:23,574 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2021-10-11 00:28:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:23,741 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-11 00:28:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:28:23,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 00:28:23,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:23,759 INFO L225 Difference]: With dead ends: 28 [2021-10-11 00:28:23,759 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:28:23,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:28:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:28:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-11 00:28:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 00:28:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-11 00:28:23,794 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2021-10-11 00:28:23,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:23,794 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-11 00:28:23,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:28:23,795 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-10-11 00:28:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:28:23,795 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:23,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:23,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:28:23,796 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:23,797 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2021-10-11 00:28:23,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:23,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2525742] [2021-10-11 00:28:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:23,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:23,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2525742] [2021-10-11 00:28:23,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:23,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:28:23,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336940719] [2021-10-11 00:28:23,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:28:23,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:23,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:28:23,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:28:23,907 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 7 states. [2021-10-11 00:28:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:24,040 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-11 00:28:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:28:24,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-10-11 00:28:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:24,042 INFO L225 Difference]: With dead ends: 21 [2021-10-11 00:28:24,042 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 00:28:24,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:28:24,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 00:28:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 00:28:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 00:28:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-11 00:28:24,048 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2021-10-11 00:28:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:24,048 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-11 00:28:24,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:28:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-11 00:28:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:28:24,049 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:24,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:24,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:28:24,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:24,051 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2021-10-11 00:28:24,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:24,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149820543] [2021-10-11 00:28:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:24,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:24,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149820543] [2021-10-11 00:28:24,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:24,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:28:24,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269778708] [2021-10-11 00:28:24,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:28:24,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:24,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:28:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:28:24,242 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2021-10-11 00:28:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:24,438 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-10-11 00:28:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:28:24,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-10-11 00:28:24,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:24,443 INFO L225 Difference]: With dead ends: 27 [2021-10-11 00:28:24,443 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:28:24,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:28:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:28:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-10-11 00:28:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:28:24,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-11 00:28:24,458 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-10-11 00:28:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:24,460 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-11 00:28:24,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:28:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-11 00:28:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:28:24,462 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:24,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:24,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:28:24,472 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2021-10-11 00:28:24,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:24,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64586670] [2021-10-11 00:28:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:24,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-11 00:28:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:24,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64586670] [2021-10-11 00:28:24,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:24,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:28:24,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997966484] [2021-10-11 00:28:24,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:28:24,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:24,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:28:24,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:28:24,579 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2021-10-11 00:28:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:24,752 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-10-11 00:28:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:28:24,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-10-11 00:28:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:24,755 INFO L225 Difference]: With dead ends: 34 [2021-10-11 00:28:24,755 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 00:28:24,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:28:24,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 00:28:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2021-10-11 00:28:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 00:28:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-11 00:28:24,767 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2021-10-11 00:28:24,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:24,768 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-11 00:28:24,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:28:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-11 00:28:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:28:24,769 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:24,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:24,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:28:24,769 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2021-10-11 00:28:24,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:24,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588866182] [2021-10-11 00:28:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-11 00:28:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:24,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588866182] [2021-10-11 00:28:24,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:24,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 00:28:24,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811632279] [2021-10-11 00:28:24,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:28:24,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:24,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:28:24,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:28:24,905 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2021-10-11 00:28:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:25,120 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-11 00:28:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:28:25,121 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2021-10-11 00:28:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:25,122 INFO L225 Difference]: With dead ends: 28 [2021-10-11 00:28:25,122 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 00:28:25,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:28:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 00:28:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-10-11 00:28:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:28:25,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-10-11 00:28:25,136 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2021-10-11 00:28:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:25,136 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-11 00:28:25,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:28:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-10-11 00:28:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:28:25,138 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:25,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:25,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:28:25,138 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:25,139 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2021-10-11 00:28:25,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:25,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988810272] [2021-10-11 00:28:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:25,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:25,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988810272] [2021-10-11 00:28:25,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638428998] [2021-10-11 00:28:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:28:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:25,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 00:28:25,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:25,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:25,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-11 00:28:25,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010838762] [2021-10-11 00:28:25,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:28:25,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:25,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:28:25,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:28:25,580 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2021-10-11 00:28:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:25,808 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-11 00:28:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:28:25,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2021-10-11 00:28:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:25,810 INFO L225 Difference]: With dead ends: 38 [2021-10-11 00:28:25,810 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:28:25,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:28:25,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:28:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-10-11 00:28:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 00:28:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-11 00:28:25,814 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2021-10-11 00:28:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:25,814 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-11 00:28:25,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:28:25,814 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-11 00:28:25,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:28:25,815 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:25,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:26,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 00:28:26,016 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:26,016 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2021-10-11 00:28:26,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:26,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203706663] [2021-10-11 00:28:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:26,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203706663] [2021-10-11 00:28:26,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495470] [2021-10-11 00:28:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:28:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:26,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-11 00:28:26,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:26,498 INFO L382 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 [2021-10-11 00:28:26,499 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:28:26,507 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:28:26,512 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:28:26,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2021-10-11 00:28:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:26,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:26,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-10-11 00:28:26,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885890648] [2021-10-11 00:28:26,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-10-11 00:28:26,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:26,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-11 00:28:26,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:28:26,841 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 20 states. [2021-10-11 00:28:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:27,344 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-10-11 00:28:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:28:27,344 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 18 [2021-10-11 00:28:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:27,345 INFO L225 Difference]: With dead ends: 40 [2021-10-11 00:28:27,345 INFO L226 Difference]: Without dead ends: 40 [2021-10-11 00:28:27,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-10-11 00:28:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-11 00:28:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-10-11 00:28:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:28:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-11 00:28:27,351 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2021-10-11 00:28:27,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:27,351 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-11 00:28:27,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-10-11 00:28:27,351 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-11 00:28:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:28:27,352 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:27,352 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] [2021-10-11 00:28:27,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:27,552 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:27,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2021-10-11 00:28:27,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:27,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063325546] [2021-10-11 00:28:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-11 00:28:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:28:27,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063325546] [2021-10-11 00:28:27,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:27,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:28:27,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522844842] [2021-10-11 00:28:27,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:28:27,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:27,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:28:27,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:28:27,668 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2021-10-11 00:28:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:27,734 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-11 00:28:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:28:27,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-10-11 00:28:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:27,735 INFO L225 Difference]: With dead ends: 38 [2021-10-11 00:28:27,735 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:28:27,736 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 [2021-10-11 00:28:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:28:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 00:28:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:28:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-11 00:28:27,747 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2021-10-11 00:28:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:27,747 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-11 00:28:27,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:28:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-11 00:28:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:28:27,748 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:27,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:27,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:28:27,749 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2021-10-11 00:28:27,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2021-10-11 00:28:27,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:27,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111252313] [2021-10-11 00:28:27,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:28,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:28,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111252313] [2021-10-11 00:28:28,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025755465] [2021-10-11 00:28:28,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:28:28,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:28:28,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:28,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-11 00:28:28,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:28,224 INFO L382 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 [2021-10-11 00:28:28,224 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:28:28,231 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:28:28,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:28:28,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2021-10-11 00:28:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:28,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:28,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2021-10-11 00:28:28,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285636969] [2021-10-11 00:28:28,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-10-11 00:28:28,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:28,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-11 00:28:28,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-10-11 00:28:28,685 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 25 states. [2021-10-11 00:28:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:29,565 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-11 00:28:29,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-11 00:28:29,566 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 22 [2021-10-11 00:28:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:29,566 INFO L225 Difference]: With dead ends: 27 [2021-10-11 00:28:29,566 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:28:29,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2021-10-11 00:28:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:28:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:28:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:28:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:28:29,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-11 00:28:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:29,568 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:28:29,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-10-11 00:28:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:28:29,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:28:29,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:29,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:28:29 BoogieIcfgContainer [2021-10-11 00:28:29,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:28:29,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:28:29,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:28:29,773 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:28:29,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:23" (3/4) ... [2021-10-11 00:28:29,776 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:28:29,781 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-11 00:28:29,781 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-11 00:28:29,781 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-11 00:28:29,781 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-11 00:28:29,781 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-11 00:28:29,782 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2021-10-11 00:28:29,782 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-11 00:28:29,782 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-11 00:28:29,785 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 00:28:29,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 00:28:29,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:28:29,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:28:29,815 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d9b6053-d9a1-4dfb-9ebb-cbf1dfe4d131/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:28:29,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:28:29,817 INFO L168 Benchmark]: Toolchain (without parser) took 7788.83 ms. Allocated memory was 90.2 MB in the beginning and 174.1 MB in the end (delta: 83.9 MB). Free memory was 54.5 MB in the beginning and 109.7 MB in the end (delta: -55.2 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:29,817 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory was 60.3 MB in the beginning and 60.3 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:29,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.95 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 54.2 MB in the beginning and 82.3 MB in the end (delta: -28.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:29,819 INFO L168 Benchmark]: Boogie Preprocessor took 79.80 ms. Allocated memory is still 117.4 MB. Free memory was 82.3 MB in the beginning and 79.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:29,819 INFO L168 Benchmark]: RCFGBuilder took 631.11 ms. Allocated memory is still 117.4 MB. Free memory was 79.6 MB in the beginning and 44.0 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:29,820 INFO L168 Benchmark]: TraceAbstraction took 6544.62 ms. Allocated memory was 117.4 MB in the beginning and 174.1 MB in the end (delta: 56.6 MB). Free memory was 43.4 MB in the beginning and 111.4 MB in the end (delta: -68.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:29,820 INFO L168 Benchmark]: Witness Printer took 42.98 ms. Allocated memory is still 174.1 MB. Free memory was 111.4 MB in the beginning and 109.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:29,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory was 60.3 MB in the beginning and 60.3 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 484.95 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 54.2 MB in the beginning and 82.3 MB in the end (delta: -28.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.80 ms. Allocated memory is still 117.4 MB. Free memory was 82.3 MB in the beginning and 79.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 631.11 ms. Allocated memory is still 117.4 MB. Free memory was 79.6 MB in the beginning and 44.0 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6544.62 ms. Allocated memory was 117.4 MB in the beginning and 174.1 MB in the end (delta: 56.6 MB). Free memory was 43.4 MB in the beginning and 111.4 MB in the end (delta: -68.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 42.98 ms. Allocated memory is still 174.1 MB. Free memory was 111.4 MB in the beginning and 109.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 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: 6.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 261 SDslu, 314 SDs, 0 SdLazy, 1036 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 2.6s 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, 2.2s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 22391 SizeOfPredicates, 26 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 6/34 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...