./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0158-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/memsafety/test-0158-1.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 8faa7ab505618d5a6c508309045d02d3235f2a80 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:23:03,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:23:03,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:23:03,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:23:03,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:23:03,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:23:03,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:23:03,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:23:03,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:23:03,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:23:03,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:23:03,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:23:03,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:23:03,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:23:03,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:23:03,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:23:03,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:23:03,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:23:03,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:23:03,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:23:03,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:23:03,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:23:03,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:23:03,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:23:03,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:23:03,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:23:03,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:23:03,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:23:03,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:23:03,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:23:03,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:23:03,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:23:03,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:23:03,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:23:03,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:23:03,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:23:03,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:23:03,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:23:03,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:23:03,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:23:03,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:23:03,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:23:03,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:23:03,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:23:03,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:23:03,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:23:03,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:23:03,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:23:03,861 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:23:03,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:23:03,862 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:23:03,862 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:23:03,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:23:03,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:23:03,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:23:03,863 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:23:03,863 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:23:03,863 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:23:03,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:23:03,864 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:23:03,864 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:23:03,864 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:23:03,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:23:03,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:23:03,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:23:03,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:03,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:23:03,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:23:03,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:23:03,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:23:03,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:23:03,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8faa7ab505618d5a6c508309045d02d3235f2a80 [2021-08-27 05:23:04,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:23:04,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:23:04,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:23:04,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:23:04,222 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:23:04,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-1.i [2021-08-27 05:23:04,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af54cda5f/2fa2d7eabc514ca9969d23794ebf853e/FLAG21dd0f6b4 [2021-08-27 05:23:04,820 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:23:04,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-1.i [2021-08-27 05:23:04,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af54cda5f/2fa2d7eabc514ca9969d23794ebf853e/FLAG21dd0f6b4 [2021-08-27 05:23:05,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af54cda5f/2fa2d7eabc514ca9969d23794ebf853e [2021-08-27 05:23:05,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:23:05,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:23:05,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:05,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:23:05,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:23:05,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269a4e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05, skipping insertion in model container [2021-08-27 05:23:05,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:23:05,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:23:05,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:05,696 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:23:05,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:05,765 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:23:05,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05 WrapperNode [2021-08-27 05:23:05,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:05,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:23:05,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:23:05,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:23:05,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:23:05,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:23:05,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:23:05,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:23:05,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (1/1) ... [2021-08-27 05:23:05,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:05,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:05,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 05:23:05,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 05:23:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:23:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:23:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:23:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:23:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:23:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:23:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:23:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:23:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:23:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:23:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:23:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:23:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:23:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:23:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:23:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:23:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:23:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:23:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:23:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:23:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:23:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:23:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:23:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:23:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:23:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:23:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:23:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:23:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:23:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:23:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:23:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:23:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:23:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:23:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:23:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:23:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:23:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:23:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:23:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:23:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:23:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:23:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:23:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:23:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:23:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:23:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:23:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:23:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:23:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:23:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:23:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:23:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:23:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:23:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:23:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:23:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:23:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:23:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:23:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:23:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:23:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:23:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:23:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:23:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:23:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:23:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:23:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:23:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:23:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:23:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:23:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:23:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:23:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:23:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:23:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:23:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:23:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:23:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:23:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:23:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:23:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:23:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:23:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:23:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:23:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:23:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:23:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:23:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:23:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:23:06,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:23:06,415 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:23:06,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:06 BoogieIcfgContainer [2021-08-27 05:23:06,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:23:06,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:23:06,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:23:06,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:23:06,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:23:05" (1/3) ... [2021-08-27 05:23:06,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d1f71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:06, skipping insertion in model container [2021-08-27 05:23:06,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:05" (2/3) ... [2021-08-27 05:23:06,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d1f71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:06, skipping insertion in model container [2021-08-27 05:23:06,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:06" (3/3) ... [2021-08-27 05:23:06,434 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2021-08-27 05:23:06,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:23:06,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-08-27 05:23:06,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:23:06,487 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 05:23:06,487 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-08-27 05:23:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:23:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:23:06,505 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:06,505 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:06,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 05:23:06,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:06,511 INFO L82 PathProgramCache]: Analyzing trace with hash -137843124, now seen corresponding path program 1 times [2021-08-27 05:23:06,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:06,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585661932] [2021-08-27 05:23:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:06,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:06,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:06,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585661932] [2021-08-27 05:23:06,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585661932] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:06,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:06,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:23:06,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296396553] [2021-08-27 05:23:06,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:23:06,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:23:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:06,724 INFO L87 Difference]: Start difference. First operand has 27 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:06,780 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-08-27 05:23:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:23:06,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 05:23:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:06,786 INFO L225 Difference]: With dead ends: 24 [2021-08-27 05:23:06,787 INFO L226 Difference]: Without dead ends: 21 [2021-08-27 05:23:06,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-27 05:23:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-27 05:23:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-08-27 05:23:06,812 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 7 [2021-08-27 05:23:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:06,812 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-08-27 05:23:06,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-08-27 05:23:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:23:06,813 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:06,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:06,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:23:06,813 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 05:23:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash -137843123, now seen corresponding path program 1 times [2021-08-27 05:23:06,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:06,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273726572] [2021-08-27 05:23:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:06,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:06,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:06,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273726572] [2021-08-27 05:23:06,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273726572] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:06,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:06,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:23:06,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110292409] [2021-08-27 05:23:06,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:23:06,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:23:06,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:06,913 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:06,955 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-08-27 05:23:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:23:06,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 05:23:06,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:06,957 INFO L225 Difference]: With dead ends: 18 [2021-08-27 05:23:06,957 INFO L226 Difference]: Without dead ends: 18 [2021-08-27 05:23:06,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-27 05:23:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-27 05:23:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-08-27 05:23:06,960 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 7 [2021-08-27 05:23:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:06,961 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-08-27 05:23:06,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-08-27 05:23:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 05:23:06,961 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:06,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:06,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 05:23:06,962 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 05:23:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:06,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1810596303, now seen corresponding path program 1 times [2021-08-27 05:23:06,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:06,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212808982] [2021-08-27 05:23:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:06,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:07,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:07,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212808982] [2021-08-27 05:23:07,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212808982] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:07,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:07,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:23:07,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975333493] [2021-08-27 05:23:07,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:23:07,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:23:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:23:07,060 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:07,157 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-08-27 05:23:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:23:07,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 05:23:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:07,160 INFO L225 Difference]: With dead ends: 17 [2021-08-27 05:23:07,160 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 05:23:07,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:23:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 05:23:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 05:23:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-08-27 05:23:07,166 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 11 [2021-08-27 05:23:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:07,166 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-08-27 05:23:07,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-08-27 05:23:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:23:07,168 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:07,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:07,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 05:23:07,168 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 05:23:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:07,170 INFO L82 PathProgramCache]: Analyzing trace with hash 293910604, now seen corresponding path program 1 times [2021-08-27 05:23:07,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:07,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733168084] [2021-08-27 05:23:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:07,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:07,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:07,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733168084] [2021-08-27 05:23:07,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733168084] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:07,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:07,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:23:07,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911472175] [2021-08-27 05:23:07,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:23:07,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:07,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:23:07,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:23:07,316 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:07,368 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-08-27 05:23:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:23:07,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-27 05:23:07,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:07,369 INFO L225 Difference]: With dead ends: 16 [2021-08-27 05:23:07,369 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 05:23:07,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 65.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:23:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 05:23:07,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 05:23:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-08-27 05:23:07,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 12 [2021-08-27 05:23:07,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:07,372 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-08-27 05:23:07,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-08-27 05:23:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 05:23:07,372 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:07,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:07,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 05:23:07,373 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 05:23:07,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:07,373 INFO L82 PathProgramCache]: Analyzing trace with hash 521294193, now seen corresponding path program 1 times [2021-08-27 05:23:07,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:07,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802873634] [2021-08-27 05:23:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:07,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:07,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:07,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802873634] [2021-08-27 05:23:07,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802873634] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:07,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:07,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:23:07,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315037442] [2021-08-27 05:23:07,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:23:07,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:23:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:23:07,491 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:07,565 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-08-27 05:23:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:23:07,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 05:23:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:07,569 INFO L225 Difference]: With dead ends: 15 [2021-08-27 05:23:07,569 INFO L226 Difference]: Without dead ends: 15 [2021-08-27 05:23:07,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:23:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-27 05:23:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-27 05:23:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-08-27 05:23:07,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 13 [2021-08-27 05:23:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:07,575 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-08-27 05:23:07,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-08-27 05:23:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 05:23:07,576 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:07,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:07,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 05:23:07,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr9ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 05:23:07,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:07,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1019749137, now seen corresponding path program 1 times [2021-08-27 05:23:07,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:07,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99188969] [2021-08-27 05:23:07,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:07,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:07,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:07,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99188969] [2021-08-27 05:23:07,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99188969] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:07,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:07,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 05:23:07,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307808950] [2021-08-27 05:23:07,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:23:07,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:07,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:23:07,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:23:07,818 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:07,885 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-08-27 05:23:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:23:07,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-08-27 05:23:07,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:07,886 INFO L225 Difference]: With dead ends: 14 [2021-08-27 05:23:07,886 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 05:23:07,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:23:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 05:23:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 05:23:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 05:23:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 05:23:07,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-08-27 05:23:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:07,888 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 05:23:07,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:23:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 05:23:07,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 05:23:07,891 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:23:07,891 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:23:07,892 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:23:07,892 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:23:07,892 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:23:07,892 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:23:07,892 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:07,892 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:07,893 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:07,893 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:23:07,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 05:23:07,896 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:23:07,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:23:07 BoogieIcfgContainer [2021-08-27 05:23:07,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:23:07,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:23:07,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:23:07,899 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:23:07,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:06" (3/4) ... [2021-08-27 05:23:07,902 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 05:23:07,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-27 05:23:07,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 05:23:07,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-27 05:23:07,908 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-27 05:23:07,908 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-27 05:23:07,908 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-27 05:23:07,908 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 05:23:07,908 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-27 05:23:07,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-27 05:23:07,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-27 05:23:07,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 05:23:07,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 05:23:07,936 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 05:23:07,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:23:07,937 INFO L168 Benchmark]: Toolchain (without parser) took 2637.41 ms. Allocated memory was 58.7 MB in the beginning and 94.4 MB in the end (delta: 35.7 MB). Free memory was 36.3 MB in the beginning and 66.4 MB in the end (delta: -30.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:07,938 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 40.7 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:07,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.24 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 36.0 MB in the end (delta: 90.2 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:07,938 INFO L168 Benchmark]: Boogie Preprocessor took 71.42 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 33.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:07,939 INFO L168 Benchmark]: RCFGBuilder took 579.63 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 33.5 MB in the beginning and 48.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:07,939 INFO L168 Benchmark]: TraceAbstraction took 1476.65 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 48.1 MB in the beginning and 69.4 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:07,939 INFO L168 Benchmark]: Witness Printer took 37.36 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 66.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:07,941 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 58.7 MB. Free memory was 40.8 MB in the beginning and 40.7 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.24 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 36.0 MB in the end (delta: 90.2 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.42 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 33.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 579.63 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 33.5 MB in the beginning and 48.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1476.65 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 48.1 MB in the beginning and 69.4 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 37.36 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 66.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: 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 - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1417.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.0ms, AutomataDifference: 425.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 46 SDslu, 85 SDs, 0 SdLazy, 187 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 214.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 331.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.5ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.1ms SsaConstructionTime, 129.2ms SatisfiabilityAnalysisTime, 641.7ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 506 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 05:23:07,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...