./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c 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_cmemrchr-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 b2f3c0ded3a6ea37e981661d4b4066d384875e4d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:04:59,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:04:59,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:04:59,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:04:59,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:04:59,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:04:59,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:04:59,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:04:59,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:04:59,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:04:59,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:04:59,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:04:59,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:04:59,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:04:59,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:04:59,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:04:59,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:04:59,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:04:59,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:04:59,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:04:59,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:04:59,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:04:59,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:04:59,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:04:59,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:04:59,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:04:59,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:04:59,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:04:59,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:04:59,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:04:59,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:04:59,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:04:59,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:04:59,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:04:59,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:04:59,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:04:59,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:04:59,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:04:59,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:04:59,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:04:59,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:04:59,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:04:59,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:04:59,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:04:59,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:04:59,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:04:59,655 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:04:59,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:04:59,656 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:04:59,656 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:04:59,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:04:59,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:04:59,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:04:59,658 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:04:59,658 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:04:59,659 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:04:59,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:04:59,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:04:59,660 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:04:59,660 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:04:59,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:04:59,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:04:59,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:04:59,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:04:59,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:04:59,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:04:59,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:04:59,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:04:59,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:04:59,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:04:59,663 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 -> b2f3c0ded3a6ea37e981661d4b4066d384875e4d [2019-11-28 20:04:59,988 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:05:00,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:05:00,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:05:00,008 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:05:00,008 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:05:00,009 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-11-28 20:05:00,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511ed285e/e34e8dd325814ad7bd3978b61f3cd650/FLAGc0340c5b7 [2019-11-28 20:05:00,617 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:05:00,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-11-28 20:05:00,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511ed285e/e34e8dd325814ad7bd3978b61f3cd650/FLAGc0340c5b7 [2019-11-28 20:05:00,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511ed285e/e34e8dd325814ad7bd3978b61f3cd650 [2019-11-28 20:05:00,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:05:00,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:05:00,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:05:00,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:05:00,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:05:00,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:05:00" (1/1) ... [2019-11-28 20:05:00,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff623f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:00, skipping insertion in model container [2019-11-28 20:05:00,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:05:00" (1/1) ... [2019-11-28 20:05:00,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:05:01,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:05:01,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:05:01,450 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:05:01,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:05:01,562 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:05:01,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01 WrapperNode [2019-11-28 20:05:01,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:05:01,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:05:01,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:05:01,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:05:01,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (1/1) ... [2019-11-28 20:05:01,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (1/1) ... [2019-11-28 20:05:01,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (1/1) ... [2019-11-28 20:05:01,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (1/1) ... [2019-11-28 20:05:01,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (1/1) ... [2019-11-28 20:05:01,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (1/1) ... [2019-11-28 20:05:01,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (1/1) ... [2019-11-28 20:05:01,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:05:01,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:05:01,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:05:01,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:05:01,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (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 [2019-11-28 20:05:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:05:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:05:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:05:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:05:01,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:05:01,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:05:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:05:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2019-11-28 20:05:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:05:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:05:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:05:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:05:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:05:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:05:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:05:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:05:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:05:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:05:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:05:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:05:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:05:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:05:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:05:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:05:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:05:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:05:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:05:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:05:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:05:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:05:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:05:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:05:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:05:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:05:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:05:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:05:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:05:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:05:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:05:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:05:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:05:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:05:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:05:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:05:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:05:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:05:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:05:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:05:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:05:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:05:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:05:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:05:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:05:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:05:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:05:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:05:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:05:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:05:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:05:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:05:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:05:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:05:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:05:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:05:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:05:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:05:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:05:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:05:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:05:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:05:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:05:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:05:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:05:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:05:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:05:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:05:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:05:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:05:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:05:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:05:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:05:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:05:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:05:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:05:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:05:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:05:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:05:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:05:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:05:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:05:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:05:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:05:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:05:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:05:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:05:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:05:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:05:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:05:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:05:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:05:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:05:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:05:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:05:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:05:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:05:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:05:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:05:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:05:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:05:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:05:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:05:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-28 20:05:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2019-11-28 20:05:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:05:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:05:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:05:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:05:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:05:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:05:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:05:02,254 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:05:02,255 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 20:05:02,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:02 BoogieIcfgContainer [2019-11-28 20:05:02,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:05:02,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:05:02,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:05:02,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:05:02,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:05:00" (1/3) ... [2019-11-28 20:05:02,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:05:02, skipping insertion in model container [2019-11-28 20:05:02,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:01" (2/3) ... [2019-11-28 20:05:02,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:05:02, skipping insertion in model container [2019-11-28 20:05:02,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:02" (3/3) ... [2019-11-28 20:05:02,265 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2019-11-28 20:05:02,276 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:05:02,284 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-28 20:05:02,297 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-28 20:05:02,316 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:05:02,316 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:05:02,316 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:05:02,316 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:05:02,316 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:05:02,317 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:05:02,317 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:05:02,317 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:05:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-28 20:05:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:05:02,343 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:02,344 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:02,344 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:02,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:02,351 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2019-11-28 20:05:02,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:02,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951600415] [2019-11-28 20:05:02,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:02,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951600415] [2019-11-28 20:05:02,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:02,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:05:02,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275060775] [2019-11-28 20:05:02,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:05:02,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:02,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:05:02,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:05:02,612 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-11-28 20:05:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:02,758 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-28 20:05:02,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:05:02,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 20:05:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:02,770 INFO L225 Difference]: With dead ends: 33 [2019-11-28 20:05:02,770 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 20:05:02,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:05:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 20:05:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 20:05:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 20:05:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-28 20:05:02,809 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2019-11-28 20:05:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:02,809 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-28 20:05:02,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:05:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-28 20:05:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:05:02,811 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:02,811 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:02,811 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2019-11-28 20:05:02,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:02,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112141113] [2019-11-28 20:05:02,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:02,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:02,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112141113] [2019-11-28 20:05:02,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:02,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:05:02,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463329863] [2019-11-28 20:05:02,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:05:02,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:02,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:05:02,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:05:02,955 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2019-11-28 20:05:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:03,133 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-28 20:05:03,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:05:03,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 20:05:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:03,135 INFO L225 Difference]: With dead ends: 34 [2019-11-28 20:05:03,136 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 20:05:03,137 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:05:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 20:05:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-11-28 20:05:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-28 20:05:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-28 20:05:03,144 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2019-11-28 20:05:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:03,145 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-28 20:05:03,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:05:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-11-28 20:05:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:05:03,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:03,146 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:03,147 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:03,147 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2019-11-28 20:05:03,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:03,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927593116] [2019-11-28 20:05:03,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:03,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927593116] [2019-11-28 20:05:03,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373982921] [2019-11-28 20:05:03,284 INFO L94 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 [2019-11-28 20:05:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:03,410 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 20:05:03,417 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:03,497 INFO L377 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 [2019-11-28 20:05:03,498 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:03,510 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:03,511 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:03,511 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-28 20:05:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:03,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:03,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-11-28 20:05:03,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750940169] [2019-11-28 20:05:03,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:05:03,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:03,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:05:03,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:05:03,545 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2019-11-28 20:05:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:03,688 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-28 20:05:03,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:05:03,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-28 20:05:03,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:03,690 INFO L225 Difference]: With dead ends: 33 [2019-11-28 20:05:03,690 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 20:05:03,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:05:03,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 20:05:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-11-28 20:05:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 20:05:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-28 20:05:03,701 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2019-11-28 20:05:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:03,708 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-28 20:05:03,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:05:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-28 20:05:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 20:05:03,710 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:03,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:03,913 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:03,914 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2019-11-28 20:05:03,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:03,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570622751] [2019-11-28 20:05:03,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:04,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570622751] [2019-11-28 20:05:04,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:04,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 20:05:04,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992546568] [2019-11-28 20:05:04,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:05:04,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:04,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:05:04,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:05:04,081 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2019-11-28 20:05:04,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:04,320 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2019-11-28 20:05:04,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:05:04,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-28 20:05:04,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:04,324 INFO L225 Difference]: With dead ends: 32 [2019-11-28 20:05:04,325 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 20:05:04,325 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:05:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 20:05:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-11-28 20:05:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 20:05:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-28 20:05:04,331 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2019-11-28 20:05:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:04,331 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-28 20:05:04,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:05:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-28 20:05:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 20:05:04,332 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:04,333 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:04,333 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:04,334 INFO L82 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2019-11-28 20:05:04,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:04,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740266228] [2019-11-28 20:05:04,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:04,765 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2019-11-28 20:05:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:04,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740266228] [2019-11-28 20:05:04,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073321401] [2019-11-28 20:05:04,847 INFO L94 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 [2019-11-28 20:05:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:04,944 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-28 20:05:04,946 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:05,002 INFO L377 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 [2019-11-28 20:05:05,003 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:05,015 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:05,015 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:05,016 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-28 20:05:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:05:05,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:05:05,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2019-11-28 20:05:05,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487469036] [2019-11-28 20:05:05,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 20:05:05,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:05,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 20:05:05,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-11-28 20:05:05,222 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 9 states. [2019-11-28 20:05:05,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:05,477 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-28 20:05:05,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:05:05,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2019-11-28 20:05:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:05,478 INFO L225 Difference]: With dead ends: 35 [2019-11-28 20:05:05,478 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 20:05:05,479 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2019-11-28 20:05:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 20:05:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-28 20:05:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 20:05:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-28 20:05:05,484 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2019-11-28 20:05:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:05,485 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-28 20:05:05,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 20:05:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-28 20:05:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 20:05:05,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:05,486 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:05,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:05,696 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:05,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2019-11-28 20:05:05,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:05,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429880753] [2019-11-28 20:05:05,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:05,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429880753] [2019-11-28 20:05:05,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201533558] [2019-11-28 20:05:05,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 20:05:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:06,028 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 20:05:06,034 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:06,045 INFO L377 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 [2019-11-28 20:05:06,045 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:06,053 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:06,054 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:06,054 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-28 20:05:06,081 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-28 20:05:06,081 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:06,086 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:06,086 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:06,086 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2019-11-28 20:05:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:06,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:06,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-11-28 20:05:06,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317563155] [2019-11-28 20:05:06,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 20:05:06,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:06,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 20:05:06,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:05:06,128 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2019-11-28 20:05:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:06,498 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2019-11-28 20:05:06,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 20:05:06,499 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2019-11-28 20:05:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:06,500 INFO L225 Difference]: With dead ends: 68 [2019-11-28 20:05:06,500 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 20:05:06,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2019-11-28 20:05:06,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 20:05:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2019-11-28 20:05:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 20:05:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2019-11-28 20:05:06,513 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2019-11-28 20:05:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:06,513 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2019-11-28 20:05:06,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 20:05:06,513 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2019-11-28 20:05:06,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 20:05:06,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:06,514 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:06,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:06,722 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:06,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2019-11-28 20:05:06,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:06,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213009284] [2019-11-28 20:05:06,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:05:06,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213009284] [2019-11-28 20:05:06,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:06,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:05:06,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657756349] [2019-11-28 20:05:06,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:05:06,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:06,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:05:06,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:05:06,833 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2019-11-28 20:05:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:06,902 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-11-28 20:05:06,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:05:06,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-28 20:05:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:06,904 INFO L225 Difference]: With dead ends: 51 [2019-11-28 20:05:06,904 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 20:05:06,905 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:05:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 20:05:06,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 20:05:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 20:05:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-28 20:05:06,909 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2019-11-28 20:05:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:06,909 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-28 20:05:06,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:05:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-28 20:05:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-28 20:05:06,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:06,911 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:06,911 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:06,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:06,911 INFO L82 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2019-11-28 20:05:06,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:06,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598033718] [2019-11-28 20:05:06,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:07,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598033718] [2019-11-28 20:05:07,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509830337] [2019-11-28 20:05:07,278 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:07,371 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:05:07,371 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:05:07,373 INFO L264 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-28 20:05:07,376 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:07,411 INFO L377 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 [2019-11-28 20:05:07,412 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:07,420 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:07,421 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:07,421 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-28 20:05:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:07,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:07,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2019-11-28 20:05:07,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859037850] [2019-11-28 20:05:07,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-28 20:05:07,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:07,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-28 20:05:07,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-28 20:05:07,795 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 25 states. [2019-11-28 20:05:08,624 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-11-28 20:05:08,829 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-11-28 20:05:09,286 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-11-28 20:05:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:09,691 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-11-28 20:05:09,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-28 20:05:09,692 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2019-11-28 20:05:09,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:09,694 INFO L225 Difference]: With dead ends: 59 [2019-11-28 20:05:09,694 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 20:05:09,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=238, Invalid=1568, Unknown=0, NotChecked=0, Total=1806 [2019-11-28 20:05:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 20:05:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2019-11-28 20:05:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 20:05:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-11-28 20:05:09,699 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2019-11-28 20:05:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:09,700 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-11-28 20:05:09,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-28 20:05:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-11-28 20:05:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-28 20:05:09,701 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:09,701 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:09,903 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:09,904 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:09,905 INFO L82 PathProgramCache]: Analyzing trace with hash 407669787, now seen corresponding path program 3 times [2019-11-28 20:05:09,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:09,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645707103] [2019-11-28 20:05:09,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:10,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:10,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645707103] [2019-11-28 20:05:10,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909146875] [2019-11-28 20:05:10,141 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:10,241 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 20:05:10,241 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:05:10,243 INFO L264 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-28 20:05:10,249 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:10,256 INFO L377 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 [2019-11-28 20:05:10,256 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:10,260 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:10,260 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:10,261 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 20:05:10,415 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2019-11-28 20:05:10,415 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:10,418 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:10,419 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:10,419 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:9 [2019-11-28 20:05:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:10,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:10,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 24 [2019-11-28 20:05:10,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958973087] [2019-11-28 20:05:10,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-28 20:05:10,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:10,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-28 20:05:10,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2019-11-28 20:05:10,515 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 24 states. [2019-11-28 20:05:11,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:11,764 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2019-11-28 20:05:11,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 20:05:11,765 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 33 [2019-11-28 20:05:11,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:11,766 INFO L225 Difference]: With dead ends: 54 [2019-11-28 20:05:11,767 INFO L226 Difference]: Without dead ends: 41 [2019-11-28 20:05:11,769 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2019-11-28 20:05:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-28 20:05:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-11-28 20:05:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 20:05:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-28 20:05:11,773 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2019-11-28 20:05:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:11,773 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-28 20:05:11,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-28 20:05:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-28 20:05:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-28 20:05:11,774 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:11,774 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:11,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:11,978 INFO L410 AbstractCegarLoop]: === Iteration 10 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:05:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:11,979 INFO L82 PathProgramCache]: Analyzing trace with hash -605171170, now seen corresponding path program 4 times [2019-11-28 20:05:11,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:11,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189086040] [2019-11-28 20:05:11,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:12,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189086040] [2019-11-28 20:05:12,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004677760] [2019-11-28 20:05:12,549 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:12,652 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:05:12,652 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:05:12,653 INFO L264 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-28 20:05:12,656 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:17,360 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 22 [2019-11-28 20:05:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-28 20:05:19,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:19,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2019-11-28 20:05:19,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974582366] [2019-11-28 20:05:19,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-28 20:05:19,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:19,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-28 20:05:19,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=852, Unknown=2, NotChecked=0, Total=930 [2019-11-28 20:05:19,457 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 31 states. [2019-11-28 20:05:20,300 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-11-28 20:05:32,433 WARN L192 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-11-28 20:05:33,264 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-11-28 20:05:33,519 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-11-28 20:05:33,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:33,524 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-11-28 20:05:33,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-28 20:05:33,524 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2019-11-28 20:05:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:33,525 INFO L225 Difference]: With dead ends: 63 [2019-11-28 20:05:33,525 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:05:33,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=447, Invalid=3209, Unknown=4, NotChecked=0, Total=3660 [2019-11-28 20:05:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:05:33,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:05:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:05:33,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:05:33,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-11-28 20:05:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:33,527 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:05:33,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-28 20:05:33,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:05:33,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:05:33,731 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:33,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:05:33 BoogieIcfgContainer [2019-11-28 20:05:33,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:05:33,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:05:33,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:05:33,738 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:05:33,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:02" (3/4) ... [2019-11-28 20:05:33,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:05:33,748 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-28 20:05:33,748 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2019-11-28 20:05:33,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-28 20:05:33,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-28 20:05:33,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-28 20:05:33,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-28 20:05:33,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-28 20:05:33,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-28 20:05:33,753 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2019-11-28 20:05:33,754 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 20:05:33,754 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 20:05:33,806 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:05:33,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:05:33,808 INFO L168 Benchmark]: Toolchain (without parser) took 32870.35 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 366.0 MB). Free memory was 961.7 MB in the beginning and 1.3 GB in the end (delta: -349.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:33,809 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:33,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:33,810 INFO L168 Benchmark]: Boogie Preprocessor took 74.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:33,811 INFO L168 Benchmark]: RCFGBuilder took 611.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:33,811 INFO L168 Benchmark]: TraceAbstraction took 31479.63 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 222.3 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -240.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:33,812 INFO L168 Benchmark]: Witness Printer took 68.94 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:33,815 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 624.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 611.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 31479.63 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 222.3 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -240.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 68.94 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Result: SAFE, OverallTime: 31.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 531 SDslu, 601 SDs, 0 SdLazy, 2156 SolverSat, 168 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 377 NumberOfCodeBlocks, 377 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 361 ConstructedInterpolants, 2 QuantifiedInterpolants, 84904 SizeOfPredicates, 50 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 25/108 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...