./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.25-906a4fb [2020-10-19 17:57:12,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:57:12,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:57:12,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:57:12,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:57:12,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:57:12,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:57:12,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:57:12,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:57:12,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:57:12,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:57:12,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:57:12,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:57:12,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:57:12,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:57:12,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:57:12,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:57:12,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:57:12,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:57:12,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:57:12,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:57:12,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:57:12,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:57:12,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:57:12,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:57:12,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:57:12,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:57:12,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:57:12,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:57:12,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:57:12,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:57:12,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:57:12,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:57:12,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:57:12,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:57:12,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:57:12,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:57:12,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:57:12,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:57:12,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:57:12,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:57:12,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:57:12,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:57:12,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:57:12,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:57:12,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:57:12,753 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:57:12,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:57:12,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:57:12,754 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:57:12,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:57:12,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:57:12,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:57:12,756 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:57:12,756 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:57:12,756 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:57:12,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:57:12,757 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:57:12,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:57:12,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:57:12,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:57:12,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:57:12,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:57:12,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:57:12,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:57:12,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:57:12,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:57:12,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:57:12,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:57:12,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:57:12,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2020-10-19 17:57:13,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:57:13,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:57:13,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:57:13,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:57:13,090 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:57:13,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-10-19 17:57:13,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0201b22/de1f151b6eff401f8bd73966ac386134/FLAG934546740 [2020-10-19 17:57:13,630 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:57:13,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-10-19 17:57:13,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0201b22/de1f151b6eff401f8bd73966ac386134/FLAG934546740 [2020-10-19 17:57:13,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0201b22/de1f151b6eff401f8bd73966ac386134 [2020-10-19 17:57:13,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:57:13,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:57:13,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:57:13,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:57:13,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:57:13,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:57:13" (1/1) ... [2020-10-19 17:57:13,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2f2b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:13, skipping insertion in model container [2020-10-19 17:57:13,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:57:13" (1/1) ... [2020-10-19 17:57:13,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:57:14,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:57:14,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:57:14,484 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:57:14,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:57:14,590 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:57:14,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14 WrapperNode [2020-10-19 17:57:14,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:57:14,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:57:14,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:57:14,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:57:14,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (1/1) ... [2020-10-19 17:57:14,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (1/1) ... [2020-10-19 17:57:14,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (1/1) ... [2020-10-19 17:57:14,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (1/1) ... [2020-10-19 17:57:14,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (1/1) ... [2020-10-19 17:57:14,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (1/1) ... [2020-10-19 17:57:14,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (1/1) ... [2020-10-19 17:57:14,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:57:14,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:57:14,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:57:14,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:57:14,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 17:57:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:57:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:57:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:57:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:57:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:57:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:57:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:57:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2020-10-19 17:57:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:57:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:57:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:57:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:57:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:57:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:57:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:57:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:57:14,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:57:14,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:57:14,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:57:14,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:57:14,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:57:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:57:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:57:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:57:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:57:14,728 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:57:14,728 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:57:14,728 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:57:14,729 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:57:14,729 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:57:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:57:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:57:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:57:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:57:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:57:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:57:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:57:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:57:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:57:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:57:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:57:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:57:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:57:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:57:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:57:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:57:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:57:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:57:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:57:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:57:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:57:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:57:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:57:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:57:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:57:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:57:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:57:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:57:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:57:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:57:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:57:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:57:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:57:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:57:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:57:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:57:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:57:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:57:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:57:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:57:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:57:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:57:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:57:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:57:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:57:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:57:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:57:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:57:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:57:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:57:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:57:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:57:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:57:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:57:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:57:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:57:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:57:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:57:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:57:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:57:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:57:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:57:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:57:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2020-10-19 17:57:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:57:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:57:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:57:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:57:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:57:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:57:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:57:15,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:57:15,149 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 17:57:15,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:57:15 BoogieIcfgContainer [2020-10-19 17:57:15,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:57:15,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:57:15,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:57:15,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:57:15,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:57:13" (1/3) ... [2020-10-19 17:57:15,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:57:15, skipping insertion in model container [2020-10-19 17:57:15,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:14" (2/3) ... [2020-10-19 17:57:15,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:57:15, skipping insertion in model container [2020-10-19 17:57:15,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:57:15" (3/3) ... [2020-10-19 17:57:15,160 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2020-10-19 17:57:15,170 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:57:15,178 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-19 17:57:15,189 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-19 17:57:15,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:57:15,206 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:57:15,206 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:57:15,207 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:57:15,207 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:57:15,208 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:57:15,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:57:15,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:57:15,221 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-19 17:57:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 17:57:15,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:15,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:15,231 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:15,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2020-10-19 17:57:15,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:15,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721404324] [2020-10-19 17:57:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:15,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721404324] [2020-10-19 17:57:15,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:15,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:15,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086484493] [2020-10-19 17:57:15,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:15,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:15,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:15,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:15,482 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-10-19 17:57:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:15,646 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-19 17:57:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:15,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-19 17:57:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:15,658 INFO L225 Difference]: With dead ends: 28 [2020-10-19 17:57:15,659 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 17:57:15,661 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 [2020-10-19 17:57:15,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 17:57:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-19 17:57:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 17:57:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-19 17:57:15,699 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2020-10-19 17:57:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:15,700 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-19 17:57:15,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-19 17:57:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 17:57:15,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:15,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:15,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 17:57:15,702 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2020-10-19 17:57:15,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:15,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266004215] [2020-10-19 17:57:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:15,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266004215] [2020-10-19 17:57:15,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:15,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 17:57:15,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433883793] [2020-10-19 17:57:15,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:57:15,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:15,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:57:15,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:15,847 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 7 states. [2020-10-19 17:57:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:15,980 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-19 17:57:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:15,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-19 17:57:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:15,982 INFO L225 Difference]: With dead ends: 21 [2020-10-19 17:57:15,982 INFO L226 Difference]: Without dead ends: 21 [2020-10-19 17:57:15,983 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 [2020-10-19 17:57:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-19 17:57:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-19 17:57:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-19 17:57:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-19 17:57:15,988 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2020-10-19 17:57:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:15,989 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-19 17:57:15,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:57:15,989 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-19 17:57:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 17:57:15,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:15,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:15,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 17:57:15,991 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:15,991 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2020-10-19 17:57:15,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:15,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865159412] [2020-10-19 17:57:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:16,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865159412] [2020-10-19 17:57:16,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:16,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 17:57:16,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252958144] [2020-10-19 17:57:16,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:16,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:16,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:16,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:16,123 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-10-19 17:57:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:16,299 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-10-19 17:57:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 17:57:16,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-19 17:57:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:16,304 INFO L225 Difference]: With dead ends: 27 [2020-10-19 17:57:16,304 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 17:57:16,305 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 [2020-10-19 17:57:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 17:57:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-10-19 17:57:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 17:57:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-19 17:57:16,311 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2020-10-19 17:57:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:16,312 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-19 17:57:16,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-19 17:57:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 17:57:16,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:16,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:16,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 17:57:16,314 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:16,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:16,315 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2020-10-19 17:57:16,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:16,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016460979] [2020-10-19 17:57:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 17:57:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:16,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016460979] [2020-10-19 17:57:16,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:16,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 17:57:16,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647628987] [2020-10-19 17:57:16,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:16,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:16,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:16,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:16,502 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2020-10-19 17:57:16,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:16,701 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-19 17:57:16,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:57:16,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-19 17:57:16,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:16,705 INFO L225 Difference]: With dead ends: 34 [2020-10-19 17:57:16,705 INFO L226 Difference]: Without dead ends: 34 [2020-10-19 17:57:16,706 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 [2020-10-19 17:57:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-19 17:57:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-10-19 17:57:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 17:57:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-19 17:57:16,716 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-10-19 17:57:16,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:16,717 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-19 17:57:16,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-19 17:57:16,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 17:57:16,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:16,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:16,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 17:57:16,720 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2020-10-19 17:57:16,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:16,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706603148] [2020-10-19 17:57:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 17:57:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:16,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706603148] [2020-10-19 17:57:16,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:16,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 17:57:16,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502142147] [2020-10-19 17:57:16,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:57:16,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:16,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:57:16,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:16,845 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-10-19 17:57:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:17,063 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-19 17:57:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:57:17,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-19 17:57:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:17,065 INFO L225 Difference]: With dead ends: 28 [2020-10-19 17:57:17,066 INFO L226 Difference]: Without dead ends: 26 [2020-10-19 17:57:17,067 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 [2020-10-19 17:57:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-19 17:57:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-19 17:57:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 17:57:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-19 17:57:17,075 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2020-10-19 17:57:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:17,076 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-19 17:57:17,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:57:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-19 17:57:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 17:57:17,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:17,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:17,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 17:57:17,078 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:17,078 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2020-10-19 17:57:17,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:17,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129336735] [2020-10-19 17:57:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:17,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129336735] [2020-10-19 17:57:17,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862999979] [2020-10-19 17:57:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 17:57:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:17,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 17:57:17,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:17,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:17,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-19 17:57:17,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770213487] [2020-10-19 17:57:17,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:57:17,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:17,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:57:17,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:17,406 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2020-10-19 17:57:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:17,618 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-10-19 17:57:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 17:57:17,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-19 17:57:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:17,619 INFO L225 Difference]: With dead ends: 38 [2020-10-19 17:57:17,619 INFO L226 Difference]: Without dead ends: 38 [2020-10-19 17:57:17,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:57:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-19 17:57:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-19 17:57:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 17:57:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-19 17:57:17,625 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2020-10-19 17:57:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:17,626 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-19 17:57:17,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:57:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-19 17:57:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 17:57:17,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:17,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:17,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-19 17:57:17,839 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:17,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2020-10-19 17:57:17,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:17,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155254136] [2020-10-19 17:57:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:18,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155254136] [2020-10-19 17:57:18,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515241297] [2020-10-19 17:57:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 17:57:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:18,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-19 17:57:18,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:18,243 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 [2020-10-19 17:57:18,244 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:18,255 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:18,257 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:18,257 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2020-10-19 17:57:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:18,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:18,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-10-19 17:57:18,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388285091] [2020-10-19 17:57:18,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-19 17:57:18,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:18,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-19 17:57:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-19 17:57:18,499 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 19 states. [2020-10-19 17:57:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:18,946 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-19 17:57:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:57:18,947 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2020-10-19 17:57:18,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:18,948 INFO L225 Difference]: With dead ends: 40 [2020-10-19 17:57:18,949 INFO L226 Difference]: Without dead ends: 40 [2020-10-19 17:57:18,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2020-10-19 17:57:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-19 17:57:18,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-19 17:57:18,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 17:57:18,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-19 17:57:18,956 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2020-10-19 17:57:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:18,956 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-19 17:57:18,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-19 17:57:18,956 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-19 17:57:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:57:18,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:18,958 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] [2020-10-19 17:57:19,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:19,171 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:19,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:19,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2020-10-19 17:57:19,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:19,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090273599] [2020-10-19 17:57:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 17:57:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:57:19,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090273599] [2020-10-19 17:57:19,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:19,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:19,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594556539] [2020-10-19 17:57:19,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:57:19,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:19,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:57:19,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:19,260 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-10-19 17:57:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:19,335 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-19 17:57:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:19,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-19 17:57:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:19,337 INFO L225 Difference]: With dead ends: 38 [2020-10-19 17:57:19,337 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 17:57:19,337 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 [2020-10-19 17:57:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 17:57:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-19 17:57:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 17:57:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-19 17:57:19,340 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-19 17:57:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:19,341 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-19 17:57:19,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:57:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-19 17:57:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 17:57:19,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:19,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:19,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 17:57:19,345 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:19,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2020-10-19 17:57:19,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:19,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716943599] [2020-10-19 17:57:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:19,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:19,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716943599] [2020-10-19 17:57:19,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743706151] [2020-10-19 17:57:19,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 17:57:19,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:57:19,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:57:19,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-19 17:57:19,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:19,723 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 [2020-10-19 17:57:19,724 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:19,731 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:19,732 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:19,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2020-10-19 17:57:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:20,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:20,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2020-10-19 17:57:20,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831227768] [2020-10-19 17:57:20,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-19 17:57:20,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:20,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-19 17:57:20,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2020-10-19 17:57:20,195 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 23 states. [2020-10-19 17:57:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:21,012 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-19 17:57:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 17:57:21,013 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2020-10-19 17:57:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:21,013 INFO L225 Difference]: With dead ends: 27 [2020-10-19 17:57:21,013 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 17:57:21,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2020-10-19 17:57:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 17:57:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 17:57:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 17:57:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 17:57:21,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-19 17:57:21,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:21,016 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 17:57:21,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-19 17:57:21,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 17:57:21,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 17:57:21,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:21,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:57:21 BoogieIcfgContainer [2020-10-19 17:57:21,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:57:21,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:57:21,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:57:21,223 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:57:21,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:57:15" (3/4) ... [2020-10-19 17:57:21,227 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 17:57:21,236 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 17:57:21,236 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-19 17:57:21,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-19 17:57:21,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-19 17:57:21,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-19 17:57:21,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2020-10-19 17:57:21,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 17:57:21,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-19 17:57:21,246 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-19 17:57:21,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-19 17:57:21,248 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 17:57:21,248 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 17:57:21,294 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 17:57:21,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:57:21,295 INFO L168 Benchmark]: Toolchain (without parser) took 7319.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.1 MB). Free memory was 955.9 MB in the beginning and 751.7 MB in the end (delta: 204.2 MB). Peak memory consumption was 389.3 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:21,296 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:57:21,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -128.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:21,297 INFO L168 Benchmark]: Boogie Preprocessor took 54.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:21,298 INFO L168 Benchmark]: RCFGBuilder took 504.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:21,298 INFO L168 Benchmark]: TraceAbstraction took 6070.20 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 87.0 MB). Free memory was 1.0 GB in the beginning and 755.6 MB in the end (delta: 270.8 MB). Peak memory consumption was 357.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:21,299 INFO L168 Benchmark]: Witness Printer took 70.87 ms. Allocated memory is still 1.2 GB. Free memory was 755.6 MB in the beginning and 751.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:57:21,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 611.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -128.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 504.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6070.20 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 87.0 MB). Free memory was 1.0 GB in the beginning and 755.6 MB in the end (delta: 270.8 MB). Peak memory consumption was 357.9 MB. Max. memory is 11.5 GB. * Witness Printer took 70.87 ms. Allocated memory is still 1.2 GB. Free memory was 755.6 MB in the beginning and 751.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 11.5 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: 6.0s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 2.5s, 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, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 2.4s 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, 2.0s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 1 QuantifiedInterpolants, 23561 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...