./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.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 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 17:57:57,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:57:57,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:57:57,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:57:57,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:57:57,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:57:57,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:57:57,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:57:57,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:57:57,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:57:57,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:57:57,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:57:57,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:57:57,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:57:57,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:57:57,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:57:57,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:57:57,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:57:57,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:57:57,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:57:57,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:57:57,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:57:57,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:57:57,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:57:57,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:57:57,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:57:57,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:57:57,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:57:57,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:57:57,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:57:57,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:57:57,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:57:57,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:57:57,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:57:57,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:57:57,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:57:57,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:57:57,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:57:57,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:57:57,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:57:57,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:57:57,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:57:57,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:57:57,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:57:57,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:57:57,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:57:57,851 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:57:57,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:57:57,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:57:57,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:57:57,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:57:57,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:57:57,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:57:57,854 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:57:57,855 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:57:57,855 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:57:57,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:57:57,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:57:57,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:57:57,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:57:57,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:57:57,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:57:57,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:57:57,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:57:57,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:57:57,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:57:57,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:57:57,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:57:57,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:57:57,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:57:57,861 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 -> 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d [2020-10-19 17:57:58,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:57:58,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:57:58,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:57:58,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:57:58,199 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:57:58,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2020-10-19 17:57:58,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc1fd99f2/ccb29a1fd38d42468f1d2bb770145a08/FLAG9eda73994 [2020-10-19 17:57:58,844 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:57:58,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2020-10-19 17:57:58,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc1fd99f2/ccb29a1fd38d42468f1d2bb770145a08/FLAG9eda73994 [2020-10-19 17:57:59,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc1fd99f2/ccb29a1fd38d42468f1d2bb770145a08 [2020-10-19 17:57:59,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:57:59,141 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:57:59,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:57:59,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:57:59,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:57:59,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb8510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59, skipping insertion in model container [2020-10-19 17:57:59,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:57:59,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:57:59,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:57:59,644 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:57:59,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:57:59,743 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:57:59,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59 WrapperNode [2020-10-19 17:57:59,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:57:59,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:57:59,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:57:59,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:57:59,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (1/1) ... [2020-10-19 17:57:59,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:57:59,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:57:59,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:57:59,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:57:59,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:57:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:57:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:57:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:57:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:57:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:57:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:57:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:57:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrnlen [2020-10-19 17:57:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:57:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:57:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:57:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:57:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:57:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:57:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:57:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:57:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:57:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:57:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:57:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:57:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:57:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:57:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:57:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:57:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:57:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:57:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:57:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:57:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:57:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:57:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:57:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:57:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:57:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:57:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:57:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:57:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:57:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:57:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:57:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:57:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:57:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:57:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:57:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:57:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:57:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:57:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:57:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:57:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:57:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:57:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:57:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:57:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:57:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:57:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:57:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:57:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:57:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:57:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:57:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:57:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:57:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:57:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:57:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:57:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:57:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:57:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:57:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:57:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:57:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:57:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:57:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:57:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:57:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:57:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:57:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:57:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:57:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:57:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:57:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:57:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:57:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:57:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:57:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:57:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:57:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:57:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:57:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:57:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:57:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:57:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:57:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:57:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:57:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:57:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:57:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:57:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:57:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:57:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:57:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:57:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:57:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:57:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:57:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:57:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:57:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:57:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:57:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:57:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:57:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:57:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:57:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:57:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:57:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:57:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:57:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:57:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:57:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-19 17:57:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure cstrnlen [2020-10-19 17:57:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:57:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:57:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:57:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:57:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:57:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:57:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:58:00,402 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:58:00,402 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 17:58:00,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:00 BoogieIcfgContainer [2020-10-19 17:58:00,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:58:00,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:58:00,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:58:00,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:58:00,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:57:59" (1/3) ... [2020-10-19 17:58:00,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19451868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:58:00, skipping insertion in model container [2020-10-19 17:58:00,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:59" (2/3) ... [2020-10-19 17:58:00,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19451868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:58:00, skipping insertion in model container [2020-10-19 17:58:00,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:00" (3/3) ... [2020-10-19 17:58:00,414 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrnlen-alloca-1.i [2020-10-19 17:58:00,425 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:58:00,433 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-19 17:58:00,443 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-19 17:58:00,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:58:00,461 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:58:00,461 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:58:00,462 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:58:00,462 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:58:00,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:58:00,463 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:58:00,463 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:58:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-19 17:58:00,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:58:00,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:00,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:00,491 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:00,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:00,498 INFO L82 PathProgramCache]: Analyzing trace with hash 787746653, now seen corresponding path program 1 times [2020-10-19 17:58:00,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:00,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993119796] [2020-10-19 17:58:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:00,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993119796] [2020-10-19 17:58:00,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:00,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 17:58:00,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010437674] [2020-10-19 17:58:00,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 17:58:00,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:00,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 17:58:00,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:58:00,742 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-19 17:58:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:00,844 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-19 17:58:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 17:58:00,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-19 17:58:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:00,856 INFO L225 Difference]: With dead ends: 37 [2020-10-19 17:58:00,856 INFO L226 Difference]: Without dead ends: 34 [2020-10-19 17:58:00,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:58:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-19 17:58:00,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-19 17:58:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-19 17:58:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-19 17:58:00,898 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 11 [2020-10-19 17:58:00,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:00,899 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-19 17:58:00,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 17:58:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-19 17:58:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:58:00,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:00,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:00,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 17:58:00,901 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:00,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:00,902 INFO L82 PathProgramCache]: Analyzing trace with hash 787746343, now seen corresponding path program 1 times [2020-10-19 17:58:00,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:00,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477050989] [2020-10-19 17:58:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:00,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:00,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477050989] [2020-10-19 17:58:00,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:00,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 17:58:00,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555915638] [2020-10-19 17:58:00,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:58:00,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:58:00,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:58:00,980 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-19 17:58:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:01,076 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-19 17:58:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:58:01,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 17:58:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:01,078 INFO L225 Difference]: With dead ends: 32 [2020-10-19 17:58:01,079 INFO L226 Difference]: Without dead ends: 32 [2020-10-19 17:58:01,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:58:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-19 17:58:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-19 17:58:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 17:58:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-19 17:58:01,086 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 11 [2020-10-19 17:58:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:01,086 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-19 17:58:01,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:58:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-19 17:58:01,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:58:01,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:01,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:01,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 17:58:01,088 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:01,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:01,088 INFO L82 PathProgramCache]: Analyzing trace with hash 787746344, now seen corresponding path program 1 times [2020-10-19 17:58:01,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:01,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847685396] [2020-10-19 17:58:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:01,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847685396] [2020-10-19 17:58:01,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:01,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:58:01,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021545565] [2020-10-19 17:58:01,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:58:01,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:01,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:58:01,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:58:01,173 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-19 17:58:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:01,271 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-19 17:58:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:58:01,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 17:58:01,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:01,272 INFO L225 Difference]: With dead ends: 31 [2020-10-19 17:58:01,273 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 17:58:01,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:58:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 17:58:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-19 17:58:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 17:58:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-19 17:58:01,279 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 11 [2020-10-19 17:58:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:01,279 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-19 17:58:01,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:58:01,279 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-19 17:58:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:58:01,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:01,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:01,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 17:58:01,281 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:01,281 INFO L82 PathProgramCache]: Analyzing trace with hash 787746397, now seen corresponding path program 1 times [2020-10-19 17:58:01,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:01,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836909956] [2020-10-19 17:58:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:01,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836909956] [2020-10-19 17:58:01,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:01,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:58:01,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878241596] [2020-10-19 17:58:01,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:58:01,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:01,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:58:01,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:58:01,345 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-19 17:58:01,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:01,438 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-19 17:58:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:58:01,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 17:58:01,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:01,442 INFO L225 Difference]: With dead ends: 39 [2020-10-19 17:58:01,442 INFO L226 Difference]: Without dead ends: 39 [2020-10-19 17:58:01,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:58:01,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-19 17:58:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-10-19 17:58:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-19 17:58:01,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-19 17:58:01,453 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2020-10-19 17:58:01,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:01,454 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-19 17:58:01,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:58:01,454 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-19 17:58:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:58:01,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:01,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:01,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 17:58:01,455 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:01,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:01,456 INFO L82 PathProgramCache]: Analyzing trace with hash 789593439, now seen corresponding path program 1 times [2020-10-19 17:58:01,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:01,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886654081] [2020-10-19 17:58:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:01,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886654081] [2020-10-19 17:58:01,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:01,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:58:01,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028728894] [2020-10-19 17:58:01,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:58:01,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:01,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:58:01,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:58:01,526 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-10-19 17:58:01,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:01,656 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-19 17:58:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:58:01,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 17:58:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:01,658 INFO L225 Difference]: With dead ends: 43 [2020-10-19 17:58:01,658 INFO L226 Difference]: Without dead ends: 43 [2020-10-19 17:58:01,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:58:01,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-19 17:58:01,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-19 17:58:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 17:58:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-19 17:58:01,664 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2020-10-19 17:58:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:01,664 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-19 17:58:01,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:58:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-19 17:58:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 17:58:01,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:01,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:01,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 17:58:01,666 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:01,667 INFO L82 PathProgramCache]: Analyzing trace with hash 849748688, now seen corresponding path program 1 times [2020-10-19 17:58:01,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:01,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615264820] [2020-10-19 17:58:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:01,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615264820] [2020-10-19 17:58:01,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:01,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:58:01,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016232285] [2020-10-19 17:58:01,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:58:01,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:01,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:58:01,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:58:01,765 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 6 states. [2020-10-19 17:58:01,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:01,914 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-10-19 17:58:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:58:01,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-19 17:58:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:01,917 INFO L225 Difference]: With dead ends: 35 [2020-10-19 17:58:01,918 INFO L226 Difference]: Without dead ends: 35 [2020-10-19 17:58:01,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:58:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-19 17:58:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-19 17:58:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 17:58:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-19 17:58:01,926 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2020-10-19 17:58:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:01,928 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-19 17:58:01,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:58:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-19 17:58:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 17:58:01,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:01,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:01,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 17:58:01,933 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash 849748689, now seen corresponding path program 1 times [2020-10-19 17:58:01,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:01,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200105469] [2020-10-19 17:58:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:02,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:02,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200105469] [2020-10-19 17:58:02,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:02,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 17:58:02,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986822754] [2020-10-19 17:58:02,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:58:02,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:02,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:58:02,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:58:02,051 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 8 states. [2020-10-19 17:58:02,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:02,226 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-10-19 17:58:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:58:02,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-19 17:58:02,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:02,229 INFO L225 Difference]: With dead ends: 44 [2020-10-19 17:58:02,230 INFO L226 Difference]: Without dead ends: 44 [2020-10-19 17:58:02,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:58:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-19 17:58:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-19 17:58:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 17:58:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-19 17:58:02,235 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 16 [2020-10-19 17:58:02,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:02,236 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-19 17:58:02,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:58:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-19 17:58:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 17:58:02,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:02,237 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:02,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 17:58:02,237 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:02,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:02,238 INFO L82 PathProgramCache]: Analyzing trace with hash -2015068958, now seen corresponding path program 1 times [2020-10-19 17:58:02,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:02,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299672062] [2020-10-19 17:58:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:02,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299672062] [2020-10-19 17:58:02,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843593363] [2020-10-19 17:58:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:02,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 17:58:02,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:02,560 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:58:02,561 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:02,569 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:02,569 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:02,569 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 17:58:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:02,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:02,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-19 17:58:02,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544253535] [2020-10-19 17:58:02,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:58:02,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:02,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:58:02,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:58:02,632 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2020-10-19 17:58:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:02,775 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-19 17:58:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:58:02,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 17:58:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:02,776 INFO L225 Difference]: With dead ends: 44 [2020-10-19 17:58:02,777 INFO L226 Difference]: Without dead ends: 44 [2020-10-19 17:58:02,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:58:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-19 17:58:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-10-19 17:58:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 17:58:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-19 17:58:02,785 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2020-10-19 17:58:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:02,786 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-19 17:58:02,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:58:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-19 17:58:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:58:02,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:02,788 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:02,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-19 17:58:03,000 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:03,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:03,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1695397446, now seen corresponding path program 1 times [2020-10-19 17:58:03,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:03,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810329708] [2020-10-19 17:58:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:03,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810329708] [2020-10-19 17:58:03,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:03,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:58:03,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211169555] [2020-10-19 17:58:03,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:58:03,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:03,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:58:03,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:58:03,066 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 4 states. [2020-10-19 17:58:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:03,146 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-19 17:58:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:58:03,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-19 17:58:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:03,148 INFO L225 Difference]: With dead ends: 36 [2020-10-19 17:58:03,148 INFO L226 Difference]: Without dead ends: 36 [2020-10-19 17:58:03,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:58:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-19 17:58:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-19 17:58:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 17:58:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-19 17:58:03,156 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 20 [2020-10-19 17:58:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:03,157 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-19 17:58:03,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:58:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-19 17:58:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:58:03,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:03,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:03,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 17:58:03,161 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:03,161 INFO L82 PathProgramCache]: Analyzing trace with hash 964873536, now seen corresponding path program 1 times [2020-10-19 17:58:03,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:03,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094235308] [2020-10-19 17:58:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-19 17:58:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:03,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094235308] [2020-10-19 17:58:03,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:03,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 17:58:03,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229746118] [2020-10-19 17:58:03,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:58:03,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:03,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:58:03,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:58:03,306 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 7 states. [2020-10-19 17:58:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:03,483 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-19 17:58:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 17:58:03,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 17:58:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:03,485 INFO L225 Difference]: With dead ends: 58 [2020-10-19 17:58:03,485 INFO L226 Difference]: Without dead ends: 58 [2020-10-19 17:58:03,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:58:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-19 17:58:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-10-19 17:58:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-19 17:58:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-19 17:58:03,492 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 21 [2020-10-19 17:58:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:03,492 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-19 17:58:03,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:58:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-19 17:58:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:58:03,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:03,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:03,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 17:58:03,495 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash -46243714, now seen corresponding path program 1 times [2020-10-19 17:58:03,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:03,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061309351] [2020-10-19 17:58:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-19 17:58:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:03,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061309351] [2020-10-19 17:58:03,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:03,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 17:58:03,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785193974] [2020-10-19 17:58:03,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:58:03,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:03,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:58:03,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:58:03,583 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 8 states. [2020-10-19 17:58:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:03,776 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-10-19 17:58:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:58:03,776 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-19 17:58:03,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:03,777 INFO L225 Difference]: With dead ends: 55 [2020-10-19 17:58:03,778 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 17:58:03,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:58:03,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 17:58:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2020-10-19 17:58:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 17:58:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-19 17:58:03,783 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 21 [2020-10-19 17:58:03,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:03,783 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-19 17:58:03,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:58:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-19 17:58:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 17:58:03,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:03,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:03,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 17:58:03,784 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1827219927, now seen corresponding path program 1 times [2020-10-19 17:58:03,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:03,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651929634] [2020-10-19 17:58:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:03,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651929634] [2020-10-19 17:58:03,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294963092] [2020-10-19 17:58:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 17:58:03,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:03,994 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 17:58:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:04,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:04,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-19 17:58:04,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995970583] [2020-10-19 17:58:04,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:58:04,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:04,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:58:04,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:58:04,006 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2020-10-19 17:58:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:04,293 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-19 17:58:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:58:04,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-19 17:58:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:04,295 INFO L225 Difference]: With dead ends: 64 [2020-10-19 17:58:04,295 INFO L226 Difference]: Without dead ends: 64 [2020-10-19 17:58:04,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-19 17:58:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-19 17:58:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-19 17:58:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 17:58:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-19 17:58:04,309 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 22 [2020-10-19 17:58:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:04,310 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-19 17:58:04,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:58:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-19 17:58:04,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 17:58:04,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:04,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:04,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-19 17:58:04,528 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:04,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:04,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1187883691, now seen corresponding path program 1 times [2020-10-19 17:58:04,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:04,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348957668] [2020-10-19 17:58:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:04,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:04,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348957668] [2020-10-19 17:58:04,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:04,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 17:58:04,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825799575] [2020-10-19 17:58:04,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 17:58:04,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:04,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 17:58:04,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:58:04,645 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 10 states. [2020-10-19 17:58:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:04,900 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-10-19 17:58:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:58:04,901 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-19 17:58:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:04,902 INFO L225 Difference]: With dead ends: 83 [2020-10-19 17:58:04,902 INFO L226 Difference]: Without dead ends: 83 [2020-10-19 17:58:04,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-19 17:58:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-19 17:58:04,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-10-19 17:58:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 17:58:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-19 17:58:04,912 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 22 [2020-10-19 17:58:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:04,913 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-19 17:58:04,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 17:58:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-19 17:58:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 17:58:04,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:04,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:04,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 17:58:04,915 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:04,915 INFO L82 PathProgramCache]: Analyzing trace with hash 166815337, now seen corresponding path program 1 times [2020-10-19 17:58:04,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:04,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667828022] [2020-10-19 17:58:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:05,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:05,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667828022] [2020-10-19 17:58:05,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:05,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 17:58:05,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121136354] [2020-10-19 17:58:05,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 17:58:05,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:05,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 17:58:05,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-19 17:58:05,079 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 11 states. [2020-10-19 17:58:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:05,350 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-19 17:58:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:58:05,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-19 17:58:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:05,352 INFO L225 Difference]: With dead ends: 100 [2020-10-19 17:58:05,352 INFO L226 Difference]: Without dead ends: 100 [2020-10-19 17:58:05,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-19 17:58:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-19 17:58:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 69. [2020-10-19 17:58:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 17:58:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-19 17:58:05,359 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 22 [2020-10-19 17:58:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:05,360 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-19 17:58:05,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 17:58:05,360 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-19 17:58:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 17:58:05,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:05,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:05,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 17:58:05,361 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash -862082627, now seen corresponding path program 1 times [2020-10-19 17:58:05,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:05,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290226011] [2020-10-19 17:58:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:05,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-19 17:58:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:05,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290226011] [2020-10-19 17:58:05,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:05,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:58:05,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486641021] [2020-10-19 17:58:05,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:58:05,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:05,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:58:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:58:05,421 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 5 states. [2020-10-19 17:58:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:05,478 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-19 17:58:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:58:05,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-19 17:58:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:05,479 INFO L225 Difference]: With dead ends: 68 [2020-10-19 17:58:05,479 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 17:58:05,480 INFO L677 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 [2020-10-19 17:58:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 17:58:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-19 17:58:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 17:58:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-19 17:58:05,482 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2020-10-19 17:58:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:05,482 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-19 17:58:05,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:58:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-19 17:58:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 17:58:05,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:05,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:05,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 17:58:05,484 INFO L429 AbstractCegarLoop]: === Iteration 16 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:05,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:05,484 INFO L82 PathProgramCache]: Analyzing trace with hash 869619206, now seen corresponding path program 1 times [2020-10-19 17:58:05,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:05,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23001365] [2020-10-19 17:58:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:05,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23001365] [2020-10-19 17:58:05,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85227648] [2020-10-19 17:58:05,576 INFO L95 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 [2020-10-19 17:58:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:05,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 17:58:05,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:05,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:05,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-10-19 17:58:05,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992149666] [2020-10-19 17:58:05,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 17:58:05,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:05,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 17:58:05,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:58:05,787 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2020-10-19 17:58:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:06,037 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-10-19 17:58:06,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 17:58:06,037 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-10-19 17:58:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:06,038 INFO L225 Difference]: With dead ends: 39 [2020-10-19 17:58:06,039 INFO L226 Difference]: Without dead ends: 39 [2020-10-19 17:58:06,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-19 17:58:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-19 17:58:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-19 17:58:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 17:58:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-19 17:58:06,042 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2020-10-19 17:58:06,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:06,043 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-19 17:58:06,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 17:58:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-19 17:58:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 17:58:06,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:06,044 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:06,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-19 17:58:06,254 INFO L429 AbstractCegarLoop]: === Iteration 17 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:06,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2038559330, now seen corresponding path program 2 times [2020-10-19 17:58:06,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:06,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829311471] [2020-10-19 17:58:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:06,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:06,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829311471] [2020-10-19 17:58:06,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870170818] [2020-10-19 17:58:06,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:06,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:58:06,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:06,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-19 17:58:06,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:06,719 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-10-19 17:58:06,720 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,727 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:06,729 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:58:06,729 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-10-19 17:58:06,917 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:06,918 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2020-10-19 17:58:06,918 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 17:58:06,932 INFO L625 ElimStorePlain]: treesize reduction 8, result has 55.6 percent of original size [2020-10-19 17:58:06,934 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,935 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:3 [2020-10-19 17:58:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:06,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:06,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2020-10-19 17:58:06,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168331140] [2020-10-19 17:58:06,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-19 17:58:06,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:06,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-19 17:58:06,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:58:06,943 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 21 states. [2020-10-19 17:58:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:07,416 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-10-19 17:58:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:58:07,417 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 32 [2020-10-19 17:58:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:07,417 INFO L225 Difference]: With dead ends: 54 [2020-10-19 17:58:07,417 INFO L226 Difference]: Without dead ends: 40 [2020-10-19 17:58:07,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-10-19 17:58:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-19 17:58:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-19 17:58:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 17:58:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-19 17:58:07,425 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2020-10-19 17:58:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:07,425 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-19 17:58:07,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-19 17:58:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-19 17:58:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 17:58:07,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:07,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:07,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:07,629 INFO L429 AbstractCegarLoop]: === Iteration 18 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:07,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:07,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1010508549, now seen corresponding path program 3 times [2020-10-19 17:58:07,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:07,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832219705] [2020-10-19 17:58:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:07,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:07,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832219705] [2020-10-19 17:58:07,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198485927] [2020-10-19 17:58:07,766 INFO L93 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 [2020-10-19 17:58:07,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-19 17:58:07,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:07,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-19 17:58:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:08,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:08,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-10-19 17:58:08,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593436027] [2020-10-19 17:58:08,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-19 17:58:08,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:08,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-19 17:58:08,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-19 17:58:08,048 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2020-10-19 17:58:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:08,405 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-19 17:58:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:58:08,406 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2020-10-19 17:58:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:08,406 INFO L225 Difference]: With dead ends: 46 [2020-10-19 17:58:08,407 INFO L226 Difference]: Without dead ends: 46 [2020-10-19 17:58:08,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-19 17:58:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-19 17:58:08,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-19 17:58:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 17:58:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-19 17:58:08,417 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 36 [2020-10-19 17:58:08,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:08,418 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-19 17:58:08,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-19 17:58:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-19 17:58:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-19 17:58:08,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:08,420 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:08,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-19 17:58:08,633 INFO L429 AbstractCegarLoop]: === Iteration 19 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:08,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1250412755, now seen corresponding path program 4 times [2020-10-19 17:58:08,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:08,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734312695] [2020-10-19 17:58:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:08,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734312695] [2020-10-19 17:58:08,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201839914] [2020-10-19 17:58:08,942 INFO L93 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 [2020-10-19 17:58:09,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 17:58:09,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:09,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-19 17:58:09,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:09,042 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:58:09,042 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,047 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:09,048 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,048 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 17:58:09,166 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-10-19 17:58:09,166 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:09,170 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,170 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-19 17:58:09,410 INFO L384 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 24 treesize of output 18 [2020-10-19 17:58:09,412 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:58:09,435 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:09,443 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 17:58:09,445 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:09,445 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-10-19 17:58:09,446 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,456 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:09,461 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,462 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2020-10-19 17:58:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:09,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:09,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2020-10-19 17:58:09,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437561178] [2020-10-19 17:58:09,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-19 17:58:09,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:09,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-19 17:58:09,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-10-19 17:58:09,471 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 25 states. [2020-10-19 17:58:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:10,380 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-19 17:58:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 17:58:10,381 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 42 [2020-10-19 17:58:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:10,382 INFO L225 Difference]: With dead ends: 70 [2020-10-19 17:58:10,382 INFO L226 Difference]: Without dead ends: 50 [2020-10-19 17:58:10,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2020-10-19 17:58:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-19 17:58:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-19 17:58:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-19 17:58:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-19 17:58:10,386 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2020-10-19 17:58:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:10,386 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-19 17:58:10,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-19 17:58:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-19 17:58:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 17:58:10,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:10,387 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:10,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:10,598 INFO L429 AbstractCegarLoop]: === Iteration 20 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash 736937968, now seen corresponding path program 5 times [2020-10-19 17:58:10,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:10,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428109884] [2020-10-19 17:58:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:10,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428109884] [2020-10-19 17:58:10,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373183020] [2020-10-19 17:58:10,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:10,868 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-19 17:58:10,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:10,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-19 17:58:10,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:10,891 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:58:10,891 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:10,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:10,898 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:10,898 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 17:58:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:10,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:10,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-10-19 17:58:10,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072627508] [2020-10-19 17:58:10,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 17:58:10,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:10,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 17:58:10,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-19 17:58:10,988 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2020-10-19 17:58:11,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:11,399 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-10-19 17:58:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:58:11,400 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-19 17:58:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:11,400 INFO L225 Difference]: With dead ends: 56 [2020-10-19 17:58:11,400 INFO L226 Difference]: Without dead ends: 56 [2020-10-19 17:58:11,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-19 17:58:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-19 17:58:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-19 17:58:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-19 17:58:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-10-19 17:58:11,403 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2020-10-19 17:58:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:11,404 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-10-19 17:58:11,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 17:58:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-10-19 17:58:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 17:58:11,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:11,405 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:11,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:11,612 INFO L429 AbstractCegarLoop]: === Iteration 21 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:11,613 INFO L82 PathProgramCache]: Analyzing trace with hash -873535480, now seen corresponding path program 6 times [2020-10-19 17:58:11,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:11,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919559743] [2020-10-19 17:58:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:11,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919559743] [2020-10-19 17:58:11,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835120068] [2020-10-19 17:58:11,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:12,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-19 17:58:12,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:12,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-19 17:58:12,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:12,099 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:58:12,100 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:12,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:12,104 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:12,104 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 17:58:12,134 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-10-19 17:58:12,134 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:12,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:12,137 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:12,137 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-10-19 17:58:12,223 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:12,223 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-10-19 17:58:12,224 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 17:58:12,232 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:12,232 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:12,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:23 [2020-10-19 17:58:12,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:12,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-19 17:58:12,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:12,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 25 [2020-10-19 17:58:12,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781013969] [2020-10-19 17:58:12,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-19 17:58:12,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:12,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-19 17:58:12,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-19 17:58:12,412 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 25 states. [2020-10-19 17:58:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:14,894 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-10-19 17:58:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-19 17:58:14,895 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 52 [2020-10-19 17:58:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:14,895 INFO L225 Difference]: With dead ends: 85 [2020-10-19 17:58:14,895 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 17:58:14,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=443, Invalid=2863, Unknown=0, NotChecked=0, Total=3306 [2020-10-19 17:58:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 17:58:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 17:58:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 17:58:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 17:58:14,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-10-19 17:58:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:14,899 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 17:58:14,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-19 17:58:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 17:58:14,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 17:58:15,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-19 17:58:15,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:58:15 BoogieIcfgContainer [2020-10-19 17:58:15,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:58:15,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:58:15,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:58:15,116 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:58:15,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:00" (3/4) ... [2020-10-19 17:58:15,120 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 17:58:15,127 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 17:58:15,128 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-19 17:58:15,128 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrnlen [2020-10-19 17:58:15,128 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-19 17:58:15,128 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-19 17:58:15,128 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-19 17:58:15,128 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 17:58:15,129 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-19 17:58:15,136 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-19 17:58:15,138 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-19 17:58:15,138 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 17:58:15,138 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 17:58:15,203 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 17:58:15,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:58:15,205 INFO L168 Benchmark]: Toolchain (without parser) took 16069.32 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 364.4 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 211.5 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:15,206 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:58:15,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:15,207 INFO L168 Benchmark]: Boogie Preprocessor took 66.91 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:15,207 INFO L168 Benchmark]: RCFGBuilder took 593.06 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:15,208 INFO L168 Benchmark]: TraceAbstraction took 14709.10 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 240.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -68.3 MB). Peak memory consumption was 172.4 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:15,208 INFO L168 Benchmark]: Witness Printer took 88.42 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:15,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 600.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.91 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 593.06 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14709.10 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 240.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -68.3 MB). Peak memory consumption was 172.4 MB. Max. memory is 11.5 GB. * Witness Printer took 88.42 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 537]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 537]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 521]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 21, TraceHistogramMax: 5, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 519 SDtfs, 1064 SDslu, 950 SDs, 0 SdLazy, 3810 SolverSat, 190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 561 GetRequests, 271 SyntacticMatches, 3 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 122 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 758 NumberOfCodeBlocks, 751 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 729 ConstructedInterpolants, 11 QuantifiedInterpolants, 168220 SizeOfPredicates, 58 NumberOfNonLiveVariables, 996 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 124/364 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...