./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.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/ldv-memsafety/memleaks_test17_2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 997a9a1542245daddc995e1305672f611f291eda ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/ldv-memsafety/memleaks_test17_2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 997a9a1542245daddc995e1305672f611f291eda ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:13:43,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:13:43,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:13:43,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:13:43,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:13:43,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:13:43,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:13:43,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:13:43,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:13:43,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:13:43,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:13:43,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:13:43,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:13:43,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:13:43,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:13:43,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:13:43,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:13:43,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:13:43,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:13:43,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:13:43,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:13:43,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:13:43,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:13:43,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:13:43,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:13:43,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:13:43,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:13:43,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:13:43,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:13:43,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:13:43,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:13:43,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:13:43,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:13:43,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:13:43,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:13:43,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:13:43,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:13:43,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:13:43,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:13:43,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:13:43,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:13:43,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:13:44,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:13:44,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:13:44,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:13:44,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:13:44,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:13:44,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:13:44,006 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:13:44,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:13:44,006 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:13:44,007 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:13:44,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:13:44,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:13:44,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:13:44,008 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:13:44,008 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:13:44,008 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:13:44,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:13:44,009 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:13:44,009 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:13:44,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:13:44,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:13:44,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:13:44,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:13:44,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:13:44,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:13:44,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:13:44,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:13:44,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:13:44,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:13:44,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 997a9a1542245daddc995e1305672f611f291eda [2021-08-27 06:13:44,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:13:44,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:13:44,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:13:44,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:13:44,356 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:13:44,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2021-08-27 06:13:44,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e888a94/85e4760c9b424289b79d6334cecd36f9/FLAG453beab4d [2021-08-27 06:13:44,904 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:13:44,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2021-08-27 06:13:44,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e888a94/85e4760c9b424289b79d6334cecd36f9/FLAG453beab4d [2021-08-27 06:13:45,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e888a94/85e4760c9b424289b79d6334cecd36f9 [2021-08-27 06:13:45,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:13:45,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:13:45,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:13:45,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:13:45,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:13:45,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:13:45" (1/1) ... [2021-08-27 06:13:45,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557dda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:45, skipping insertion in model container [2021-08-27 06:13:45,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:13:45" (1/1) ... [2021-08-27 06:13:45,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:13:45,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:13:45,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:13:45,730 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-27 06:13:45,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28185c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:45, skipping insertion in model container [2021-08-27 06:13:45,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:13:45,732 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 06:13:45,734 INFO L168 Benchmark]: Toolchain (without parser) took 499.06 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 39.1 MB in the end (delta: -2.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:13:45,736 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 38.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:13:45,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.61 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 39.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:13:45,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 38.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 496.61 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 39.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:13:47,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:13:47,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:13:47,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:13:47,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:13:47,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:13:47,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:13:47,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:13:47,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:13:47,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:13:47,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:13:47,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:13:47,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:13:47,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:13:47,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:13:47,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:13:47,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:13:47,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:13:47,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:13:47,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:13:47,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:13:47,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:13:47,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:13:47,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:13:47,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:13:47,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:13:47,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:13:47,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:13:47,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:13:47,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:13:47,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:13:47,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:13:47,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:13:47,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:13:47,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:13:47,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:13:47,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:13:47,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:13:47,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:13:47,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:13:47,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:13:47,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:13:47,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:13:47,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:13:47,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:13:47,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:13:47,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:13:47,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:13:47,603 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:13:47,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:13:47,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:13:47,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:13:47,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:13:47,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:13:47,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:13:47,606 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:13:47,606 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:13:47,606 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:13:47,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:13:47,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:13:47,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:13:47,607 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:13:47,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:13:47,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:13:47,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:13:47,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:13:47,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:13:47,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:13:47,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:13:47,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:13:47,609 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:13:47,609 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:13:47,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:13:47,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:13:47,610 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 997a9a1542245daddc995e1305672f611f291eda [2021-08-27 06:13:47,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:13:47,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:13:47,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:13:47,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:13:47,915 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:13:47,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2021-08-27 06:13:47,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/771193158/236f3f2131f24569839fe0749a974b68/FLAGc0baa2abb [2021-08-27 06:13:48,584 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:13:48,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2021-08-27 06:13:48,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/771193158/236f3f2131f24569839fe0749a974b68/FLAGc0baa2abb [2021-08-27 06:13:48,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/771193158/236f3f2131f24569839fe0749a974b68 [2021-08-27 06:13:48,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:13:48,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:13:48,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:13:48,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:13:48,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:13:48,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:13:48" (1/1) ... [2021-08-27 06:13:48,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580ae997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:48, skipping insertion in model container [2021-08-27 06:13:48,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:13:48" (1/1) ... [2021-08-27 06:13:48,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:13:48,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:13:49,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:13:49,430 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 06:13:49,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:13:49,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:13:49,533 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:13:49,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:13:49,657 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:13:49,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49 WrapperNode [2021-08-27 06:13:49,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:13:49,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:13:49,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:13:49,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:13:49,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (1/1) ... [2021-08-27 06:13:49,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (1/1) ... [2021-08-27 06:13:49,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (1/1) ... [2021-08-27 06:13:49,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (1/1) ... [2021-08-27 06:13:49,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (1/1) ... [2021-08-27 06:13:49,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (1/1) ... [2021-08-27 06:13:49,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (1/1) ... [2021-08-27 06:13:49,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:13:49,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:13:49,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:13:49,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:13:49,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (1/1) ... [2021-08-27 06:13:49,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:13:49,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:13:49,810 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 06:13:49,831 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 06:13:49,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:13:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:13:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:13:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:13:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:13:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:13:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:13:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:13:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:13:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-27 06:13:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-27 06:13:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-27 06:13:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-27 06:13:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:13:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-27 06:13:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-27 06:13:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-27 06:13:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-27 06:13:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-27 06:13:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-27 06:13:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-27 06:13:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-27 06:13:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-27 06:13:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-27 06:13:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-27 06:13:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-27 06:13:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-27 06:13:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-27 06:13:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-27 06:13:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-27 06:13:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-27 06:13:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-27 06:13:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-27 06:13:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-27 06:13:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-27 06:13:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-27 06:13:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-27 06:13:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-27 06:13:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-27 06:13:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-27 06:13:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-27 06:13:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-27 06:13:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2021-08-27 06:13:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2021-08-27 06:13:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-27 06:13:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:13:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:13:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-27 06:13:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-27 06:13:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:13:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:13:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:13:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:13:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:13:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:13:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:13:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:13:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:13:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:13:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:13:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:13:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:13:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:13:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:13:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:13:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:13:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:13:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:13:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:13:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:13:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:13:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:13:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:13:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:13:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:13:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:13:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:13:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:13:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:13:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:13:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:13:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:13:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:13:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:13:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:13:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:13:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:13:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:13:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-27 06:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-27 06:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-27 06:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 06:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-27 06:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-27 06:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-27 06:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-27 06:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-27 06:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-27 06:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-27 06:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-27 06:13:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-27 06:13:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-27 06:13:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-27 06:13:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-27 06:13:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:13:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-27 06:13:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-27 06:13:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-27 06:13:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-27 06:13:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-27 06:13:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:13:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:13:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-27 06:13:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-27 06:13:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:13:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-27 06:13:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-27 06:13:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-27 06:13:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-27 06:13:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-27 06:13:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-27 06:13:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-27 06:13:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-27 06:13:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-27 06:13:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-27 06:13:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-27 06:13:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:13:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-27 06:13:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-27 06:13:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2021-08-27 06:13:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2021-08-27 06:13:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-27 06:13:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:13:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:13:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:13:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 06:13:49,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:13:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:13:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-27 06:13:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-27 06:13:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-27 06:13:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-27 06:13:50,582 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:13:51,001 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:13:51,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:13:51,488 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 06:13:51,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:13:51 BoogieIcfgContainer [2021-08-27 06:13:51,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:13:51,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:13:51,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:13:51,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:13:51,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:13:48" (1/3) ... [2021-08-27 06:13:51,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5ef0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:13:51, skipping insertion in model container [2021-08-27 06:13:51,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:49" (2/3) ... [2021-08-27 06:13:51,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5ef0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:13:51, skipping insertion in model container [2021-08-27 06:13:51,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:13:51" (3/3) ... [2021-08-27 06:13:51,501 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-2.i [2021-08-27 06:13:51,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:13:51,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2021-08-27 06:13:51,556 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:13:51,562 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 06:13:51,562 INFO L340 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2021-08-27 06:13:51,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 88 states have (on average 1.625) internal successors, (143), 125 states have internal predecessors, (143), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-08-27 06:13:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 06:13:51,583 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:51,584 INFO L512 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] [2021-08-27 06:13:51,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:13:51,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:51,589 INFO L82 PathProgramCache]: Analyzing trace with hash 138691825, now seen corresponding path program 1 times [2021-08-27 06:13:51,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:51,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026819621] [2021-08-27 06:13:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:51,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:51,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:51,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:51,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 06:13:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:51,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-27 06:13:51,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:52,000 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 06:13:52,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:52,093 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 06:13:52,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:52,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026819621] [2021-08-27 06:13:52,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026819621] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:52,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:52,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:13:52,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847699929] [2021-08-27 06:13:52,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-27 06:13:52,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 06:13:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 06:13:52,114 INFO L87 Difference]: Start difference. First operand has 154 states, 88 states have (on average 1.625) internal successors, (143), 125 states have internal predecessors, (143), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:13:52,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:52,129 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-08-27 06:13:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 06:13:52,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-08-27 06:13:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:52,136 INFO L225 Difference]: With dead ends: 84 [2021-08-27 06:13:52,137 INFO L226 Difference]: Without dead ends: 81 [2021-08-27 06:13:52,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 06:13:52,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-27 06:13:52,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-08-27 06:13:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 47 states have (on average 1.574468085106383) internal successors, (74), 66 states have internal predecessors, (74), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 06:13:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2021-08-27 06:13:52,171 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 23 [2021-08-27 06:13:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:52,171 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2021-08-27 06:13:52,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:13:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2021-08-27 06:13:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 06:13:52,173 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:52,173 INFO L512 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] [2021-08-27 06:13:52,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 06:13:52,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:13:52,382 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:13:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:52,383 INFO L82 PathProgramCache]: Analyzing trace with hash -254335185, now seen corresponding path program 1 times [2021-08-27 06:13:52,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:52,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328013064] [2021-08-27 06:13:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:52,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:52,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:52,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:52,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 06:13:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:52,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:13:52,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:52,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:13:52,814 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 06:13:52,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:52,952 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 06:13:52,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:52,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328013064] [2021-08-27 06:13:52,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328013064] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:52,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:52,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:13:52,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074981959] [2021-08-27 06:13:52,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:13:52,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:52,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:13:52,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:52,961 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:13:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:53,146 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2021-08-27 06:13:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:13:53,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-08-27 06:13:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:53,150 INFO L225 Difference]: With dead ends: 91 [2021-08-27 06:13:53,150 INFO L226 Difference]: Without dead ends: 91 [2021-08-27 06:13:53,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:53,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-27 06:13:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-08-27 06:13:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 71 states have internal predecessors, (82), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-27 06:13:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2021-08-27 06:13:53,167 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 23 [2021-08-27 06:13:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:53,168 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-08-27 06:13:53,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:13:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2021-08-27 06:13:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 06:13:53,169 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:53,169 INFO L512 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] [2021-08-27 06:13:53,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 06:13:53,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:13:53,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:13:53,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:53,389 INFO L82 PathProgramCache]: Analyzing trace with hash -254335184, now seen corresponding path program 1 times [2021-08-27 06:13:53,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:53,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766059246] [2021-08-27 06:13:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:53,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:53,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:53,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 06:13:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:53,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 06:13:53,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:53,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:13:54,037 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 06:13:54,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:55,106 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 06:13:55,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:55,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766059246] [2021-08-27 06:13:55,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766059246] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:55,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:55,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 18 [2021-08-27 06:13:55,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320053128] [2021-08-27 06:13:55,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 06:13:55,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 06:13:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:13:55,109 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:13:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:56,326 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2021-08-27 06:13:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 06:13:56,327 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 23 [2021-08-27 06:13:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:56,329 INFO L225 Difference]: With dead ends: 99 [2021-08-27 06:13:56,329 INFO L226 Difference]: Without dead ends: 99 [2021-08-27 06:13:56,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1211.1ms TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-08-27 06:13:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-27 06:13:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2021-08-27 06:13:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.543859649122807) internal successors, (88), 76 states have internal predecessors, (88), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-27 06:13:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2021-08-27 06:13:56,336 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 23 [2021-08-27 06:13:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:56,337 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2021-08-27 06:13:56,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:13:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2021-08-27 06:13:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 06:13:56,338 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:56,338 INFO L512 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] [2021-08-27 06:13:56,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-27 06:13:56,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:13:56,553 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:13:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:56,554 INFO L82 PathProgramCache]: Analyzing trace with hash 633168496, now seen corresponding path program 1 times [2021-08-27 06:13:56,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:56,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359397375] [2021-08-27 06:13:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:56,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:56,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:56,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:56,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 06:13:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:56,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 06:13:56,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:56,936 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 06:13:56,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:57,055 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 06:13:57,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:57,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359397375] [2021-08-27 06:13:57,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359397375] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:57,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:57,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:13:57,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215000331] [2021-08-27 06:13:57,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:13:57,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:13:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:57,061 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:13:57,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:57,093 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2021-08-27 06:13:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:13:57,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-08-27 06:13:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:57,095 INFO L225 Difference]: With dead ends: 91 [2021-08-27 06:13:57,095 INFO L226 Difference]: Without dead ends: 91 [2021-08-27 06:13:57,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-27 06:13:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-08-27 06:13:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.490909090909091) internal successors, (82), 73 states have internal predecessors, (82), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-27 06:13:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2021-08-27 06:13:57,103 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 23 [2021-08-27 06:13:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:57,103 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2021-08-27 06:13:57,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:13:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2021-08-27 06:13:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 06:13:57,103 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:57,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:57,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 06:13:57,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:13:57,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:13:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:57,305 INFO L82 PathProgramCache]: Analyzing trace with hash 706370713, now seen corresponding path program 1 times [2021-08-27 06:13:57,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:57,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073084866] [2021-08-27 06:13:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:57,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:57,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:57,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:57,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 06:13:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:57,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:13:57,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:57,604 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 06:13:57,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:57,713 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 06:13:57,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:57,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073084866] [2021-08-27 06:13:57,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073084866] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:57,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:57,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:13:57,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056929375] [2021-08-27 06:13:57,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:13:57,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:13:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:57,716 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:13:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:57,756 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-08-27 06:13:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:13:57,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-08-27 06:13:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:57,757 INFO L225 Difference]: With dead ends: 91 [2021-08-27 06:13:57,757 INFO L226 Difference]: Without dead ends: 91 [2021-08-27 06:13:57,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-27 06:13:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-08-27 06:13:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 73 states have internal predecessors, (81), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-27 06:13:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2021-08-27 06:13:57,763 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 24 [2021-08-27 06:13:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:57,763 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2021-08-27 06:13:57,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:13:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2021-08-27 06:13:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 06:13:57,764 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:57,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:57,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 06:13:57,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:13:57,972 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:13:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:57,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1845786248, now seen corresponding path program 1 times [2021-08-27 06:13:57,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:57,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152318496] [2021-08-27 06:13:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:57,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:57,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:57,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:57,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 06:13:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:58,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:13:58,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:58,279 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 06:13:58,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:58,413 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 06:13:58,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:58,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152318496] [2021-08-27 06:13:58,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152318496] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:58,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:58,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:13:58,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110025176] [2021-08-27 06:13:58,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:13:58,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:58,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:13:58,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:13:58,416 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:13:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:58,541 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2021-08-27 06:13:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:13:58,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-08-27 06:13:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:58,543 INFO L225 Difference]: With dead ends: 127 [2021-08-27 06:13:58,543 INFO L226 Difference]: Without dead ends: 122 [2021-08-27 06:13:58,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:13:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-27 06:13:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2021-08-27 06:13:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 53 states have (on average 1.490566037735849) internal successors, (79), 72 states have internal predecessors, (79), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-27 06:13:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-08-27 06:13:58,549 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 24 [2021-08-27 06:13:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:58,550 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-08-27 06:13:58,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:13:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-08-27 06:13:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-27 06:13:58,551 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:58,551 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:58,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 06:13:58,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:13:58,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:13:58,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:58,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1837734000, now seen corresponding path program 1 times [2021-08-27 06:13:58,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:58,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613536887] [2021-08-27 06:13:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:58,761 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:58,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:58,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:58,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 06:13:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:59,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 06:13:59,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:59,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:13:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:59,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:14:01,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:01,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613536887] [2021-08-27 06:14:01,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613536887] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:14:01,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:14:01,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2021-08-27 06:14:01,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697445068] [2021-08-27 06:14:01,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-27 06:14:01,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-27 06:14:01,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2021-08-27 06:14:01,733 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 25 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:14:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:14:05,055 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2021-08-27 06:14:05,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-27 06:14:05,056 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 29 [2021-08-27 06:14:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:14:05,057 INFO L225 Difference]: With dead ends: 102 [2021-08-27 06:14:05,058 INFO L226 Difference]: Without dead ends: 102 [2021-08-27 06:14:05,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 3404.3ms TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2021-08-27 06:14:05,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-27 06:14:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2021-08-27 06:14:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 84 states have internal predecessors, (95), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-27 06:14:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-08-27 06:14:05,065 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 29 [2021-08-27 06:14:05,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:14:05,066 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-08-27 06:14:05,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:14:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-08-27 06:14:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-27 06:14:05,067 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:14:05,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:14:05,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-08-27 06:14:05,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:14:05,277 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:14:05,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:14:05,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1955017851, now seen corresponding path program 1 times [2021-08-27 06:14:05,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:14:05,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221348918] [2021-08-27 06:14:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:14:05,278 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:14:05,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:14:05,279 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:14:05,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 06:14:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:14:05,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 06:14:05,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:14:05,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:14:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 06:14:05,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 06:14:06,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:06,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221348918] [2021-08-27 06:14:06,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221348918] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:14:06,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:14:06,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-08-27 06:14:06,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838680500] [2021-08-27 06:14:06,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 06:14:06,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 06:14:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-27 06:14:06,012 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 06:14:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:14:06,660 INFO L93 Difference]: Finished difference Result 166 states and 187 transitions. [2021-08-27 06:14:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 06:14:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-08-27 06:14:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:14:06,662 INFO L225 Difference]: With dead ends: 166 [2021-08-27 06:14:06,662 INFO L226 Difference]: Without dead ends: 166 [2021-08-27 06:14:06,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 154.6ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:14:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-27 06:14:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 116. [2021-08-27 06:14:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 98 states have internal predecessors, (114), 9 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2021-08-27 06:14:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2021-08-27 06:14:06,669 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 36 [2021-08-27 06:14:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:14:06,670 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2021-08-27 06:14:06,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 06:14:06,670 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2021-08-27 06:14:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-27 06:14:06,671 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:14:06,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:14:06,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-27 06:14:06,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:14:06,872 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:14:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:14:06,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1955017852, now seen corresponding path program 1 times [2021-08-27 06:14:06,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:14:06,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718332758] [2021-08-27 06:14:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:14:06,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:14:06,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:14:06,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:14:06,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 06:14:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:14:07,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-27 06:14:07,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:14:07,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:14:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:14:07,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:14:09,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:09,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718332758] [2021-08-27 06:14:09,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718332758] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 06:14:09,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 06:14:09,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2021-08-27 06:14:09,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567135800] [2021-08-27 06:14:09,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:14:09,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:09,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:14:09,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-08-27 06:14:09,080 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:14:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:14:16,451 INFO L93 Difference]: Finished difference Result 186 states and 217 transitions. [2021-08-27 06:14:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:14:16,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2021-08-27 06:14:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:14:16,454 INFO L225 Difference]: With dead ends: 186 [2021-08-27 06:14:16,455 INFO L226 Difference]: Without dead ends: 186 [2021-08-27 06:14:16,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1644.4ms TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-08-27 06:14:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-08-27 06:14:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 160. [2021-08-27 06:14:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 137 states have internal predecessors, (172), 12 states have call successors, (12), 10 states have call predecessors, (12), 15 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:14:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 204 transitions. [2021-08-27 06:14:16,463 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 204 transitions. Word has length 36 [2021-08-27 06:14:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:14:16,463 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 204 transitions. [2021-08-27 06:14:16,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:14:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 204 transitions. [2021-08-27 06:14:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-27 06:14:16,464 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:14:16,464 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:14:16,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 06:14:16,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:14:16,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:14:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:14:16,673 INFO L82 PathProgramCache]: Analyzing trace with hash -309330094, now seen corresponding path program 1 times [2021-08-27 06:14:16,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:14:16,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741446867] [2021-08-27 06:14:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:14:16,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:14:16,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:14:16,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:14:16,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 06:14:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:14:17,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:14:17,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:14:17,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:14:17,275 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 06:14:17,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-08-27 06:14:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 06:14:17,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 06:14:17,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:17,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741446867] [2021-08-27 06:14:17,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741446867] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:14:17,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:14:17,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-08-27 06:14:17,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143954247] [2021-08-27 06:14:17,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:14:17,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:14:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:14:17,630 INFO L87 Difference]: Start difference. First operand 160 states and 204 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 06:14:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:14:18,407 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2021-08-27 06:14:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:14:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-08-27 06:14:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:14:18,409 INFO L225 Difference]: With dead ends: 220 [2021-08-27 06:14:18,410 INFO L226 Difference]: Without dead ends: 218 [2021-08-27 06:14:18,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 337.3ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:14:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-08-27 06:14:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 160. [2021-08-27 06:14:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 116 states have (on average 1.4655172413793103) internal successors, (170), 136 states have internal predecessors, (170), 12 states have call successors, (12), 11 states have call predecessors, (12), 15 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:14:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 202 transitions. [2021-08-27 06:14:18,417 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 202 transitions. Word has length 36 [2021-08-27 06:14:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:14:18,417 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 202 transitions. [2021-08-27 06:14:18,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 06:14:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 202 transitions. [2021-08-27 06:14:18,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-27 06:14:18,418 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:14:18,419 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:14:18,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 06:14:18,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:14:18,628 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:14:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:14:18,628 INFO L82 PathProgramCache]: Analyzing trace with hash -309330093, now seen corresponding path program 1 times [2021-08-27 06:14:18,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:14:18,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582032500] [2021-08-27 06:14:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:14:18,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:14:18,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:14:18,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:14:18,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-27 06:14:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:14:19,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-27 06:14:19,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:14:19,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:14:19,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:14:21,903 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:14:21,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 45 [2021-08-27 06:14:21,921 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:14:21,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 37 [2021-08-27 06:14:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:14:22,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:49,928 INFO L388 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 29 treesize of output 27 [2021-08-27 06:14:50,407 INFO L388 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 28 treesize of output 26 [2021-08-27 06:14:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:14:50,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:50,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582032500] [2021-08-27 06:14:50,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582032500] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:14:50,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:14:50,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2021-08-27 06:14:50,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72893919] [2021-08-27 06:14:50,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-27 06:14:50,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:50,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-27 06:14:50,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=814, Unknown=11, NotChecked=0, Total=930 [2021-08-27 06:14:50,688 INFO L87 Difference]: Start difference. First operand 160 states and 202 transitions. Second operand has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 6 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-27 06:22:48,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:22:48,848 INFO L93 Difference]: Finished difference Result 454 states and 558 transitions. [2021-08-27 06:22:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-27 06:22:48,850 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 6 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 36 [2021-08-27 06:22:48,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:22:48,853 INFO L225 Difference]: With dead ends: 454 [2021-08-27 06:22:48,853 INFO L226 Difference]: Without dead ends: 454 [2021-08-27 06:22:48,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 111507.1ms TimeCoverageRelationStatistics Valid=450, Invalid=3677, Unknown=33, NotChecked=0, Total=4160 [2021-08-27 06:22:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-08-27 06:22:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 252. [2021-08-27 06:22:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 195 states have (on average 1.4923076923076923) internal successors, (291), 218 states have internal predecessors, (291), 19 states have call successors, (19), 12 states have call predecessors, (19), 21 states have return successors, (41), 21 states have call predecessors, (41), 18 states have call successors, (41) [2021-08-27 06:22:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 351 transitions. [2021-08-27 06:22:48,874 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 351 transitions. Word has length 36 [2021-08-27 06:22:48,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:22:48,876 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 351 transitions. [2021-08-27 06:22:48,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 6 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-27 06:22:48,876 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 351 transitions. [2021-08-27 06:22:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 06:22:48,881 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:22:48,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:22:48,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-27 06:22:49,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:22:49,082 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_17Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:22:49,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:22:49,082 INFO L82 PathProgramCache]: Analyzing trace with hash 476011625, now seen corresponding path program 1 times [2021-08-27 06:22:49,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:22:49,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330030488] [2021-08-27 06:22:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:22:49,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:22:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:22:49,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:22:49,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-27 06:22:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:22:49,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:22:49,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:22:49,600 INFO L388 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 11 treesize of output 7 [2021-08-27 06:22:49,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-08-27 06:22:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:22:49,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:22:50,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 12 [2021-08-27 06:22:50,077 INFO L388 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 22 treesize of output 20 [2021-08-27 06:22:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:22:50,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:22:50,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330030488] [2021-08-27 06:22:50,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330030488] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:22:50,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:22:50,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-08-27 06:22:50,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341624481] [2021-08-27 06:22:50,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 06:22:50,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:22:50,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 06:22:50,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-08-27 06:22:50,165 INFO L87 Difference]: Start difference. First operand 252 states and 351 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 06:23:03,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:03,431 INFO L93 Difference]: Finished difference Result 391 states and 531 transitions. [2021-08-27 06:23:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:23:03,433 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-08-27 06:23:03,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:03,435 INFO L225 Difference]: With dead ends: 391 [2021-08-27 06:23:03,435 INFO L226 Difference]: Without dead ends: 391 [2021-08-27 06:23:03,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 479.7ms TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:23:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-08-27 06:23:03,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 328. [2021-08-27 06:23:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 255 states have (on average 1.4901960784313726) internal successors, (380), 284 states have internal predecessors, (380), 24 states have call successors, (24), 16 states have call predecessors, (24), 32 states have return successors, (56), 27 states have call predecessors, (56), 23 states have call successors, (56) [2021-08-27 06:23:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 460 transitions. [2021-08-27 06:23:03,447 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 460 transitions. Word has length 37 [2021-08-27 06:23:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:03,448 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 460 transitions. [2021-08-27 06:23:03,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 06:23:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 460 transitions. [2021-08-27 06:23:03,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-27 06:23:03,449 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:03,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:03,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-27 06:23:03,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:23:03,659 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting free_17Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:23:03,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:03,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1871458939, now seen corresponding path program 1 times [2021-08-27 06:23:03,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:03,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853379148] [2021-08-27 06:23:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:03,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:03,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:03,661 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:23:03,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 06:23:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:04,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 06:23:04,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:04,290 INFO L388 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 11 treesize of output 7 [2021-08-27 06:23:04,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-08-27 06:23:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:04,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:04,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 12 [2021-08-27 06:23:04,977 INFO L388 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 26 treesize of output 24 [2021-08-27 06:23:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:05,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:05,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853379148] [2021-08-27 06:23:05,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853379148] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:23:05,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:23:05,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-08-27 06:23:05,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991190522] [2021-08-27 06:23:05,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 06:23:05,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 06:23:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:23:05,192 INFO L87 Difference]: Start difference. First operand 328 states and 460 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-27 06:23:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:20,747 INFO L93 Difference]: Finished difference Result 428 states and 571 transitions. [2021-08-27 06:23:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 06:23:20,750 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2021-08-27 06:23:20,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:20,752 INFO L225 Difference]: With dead ends: 428 [2021-08-27 06:23:20,752 INFO L226 Difference]: Without dead ends: 428 [2021-08-27 06:23:20,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1298.6ms TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2021-08-27 06:23:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-08-27 06:23:20,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 348. [2021-08-27 06:23:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 275 states have (on average 1.4981818181818183) internal successors, (412), 304 states have internal predecessors, (412), 24 states have call successors, (24), 16 states have call predecessors, (24), 32 states have return successors, (54), 27 states have call predecessors, (54), 23 states have call successors, (54) [2021-08-27 06:23:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 490 transitions. [2021-08-27 06:23:20,765 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 490 transitions. Word has length 38 [2021-08-27 06:23:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:20,765 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 490 transitions. [2021-08-27 06:23:20,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-27 06:23:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 490 transitions. [2021-08-27 06:23:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-27 06:23:20,766 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:20,767 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:20,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-27 06:23:20,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:23:20,972 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:23:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:20,973 INFO L82 PathProgramCache]: Analyzing trace with hash -913520737, now seen corresponding path program 1 times [2021-08-27 06:23:20,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:20,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43536443] [2021-08-27 06:23:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:20,973 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:20,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:20,974 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:23:20,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 06:23:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:21,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:23:21,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:23:21,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:23:21,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:21,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43536443] [2021-08-27 06:23:21,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43536443] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:21,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:21,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:23:21,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592760627] [2021-08-27 06:23:21,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:23:21,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:23:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:21,744 INFO L87 Difference]: Start difference. First operand 348 states and 490 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:23:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:21,845 INFO L93 Difference]: Finished difference Result 313 states and 428 transitions. [2021-08-27 06:23:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:23:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-08-27 06:23:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:21,848 INFO L225 Difference]: With dead ends: 313 [2021-08-27 06:23:21,848 INFO L226 Difference]: Without dead ends: 313 [2021-08-27 06:23:21,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:23:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-08-27 06:23:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 285. [2021-08-27 06:23:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 222 states have (on average 1.454954954954955) internal successors, (323), 245 states have internal predecessors, (323), 21 states have call successors, (21), 14 states have call predecessors, (21), 25 states have return successors, (45), 25 states have call predecessors, (45), 20 states have call successors, (45) [2021-08-27 06:23:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 389 transitions. [2021-08-27 06:23:21,859 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 389 transitions. Word has length 38 [2021-08-27 06:23:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:21,860 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 389 transitions. [2021-08-27 06:23:21,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:23:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 389 transitions. [2021-08-27 06:23:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-27 06:23:21,861 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:21,861 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:21,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-27 06:23:22,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:23:22,072 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:23:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 829289598, now seen corresponding path program 1 times [2021-08-27 06:23:22,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:22,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804260626] [2021-08-27 06:23:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:22,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:22,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:22,074 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:23:22,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 06:23:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:22,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:23:22,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 06:23:22,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 06:23:22,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:22,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804260626] [2021-08-27 06:23:22,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804260626] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:22,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:22,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-27 06:23:22,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303143205] [2021-08-27 06:23:22,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:23:22,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:23:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:23:22,883 INFO L87 Difference]: Start difference. First operand 285 states and 389 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:23:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:23,017 INFO L93 Difference]: Finished difference Result 270 states and 351 transitions. [2021-08-27 06:23:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:23:23,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2021-08-27 06:23:23,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:23,019 INFO L225 Difference]: With dead ends: 270 [2021-08-27 06:23:23,019 INFO L226 Difference]: Without dead ends: 270 [2021-08-27 06:23:23,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:23:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-08-27 06:23:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 250. [2021-08-27 06:23:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 191 states have (on average 1.4031413612565444) internal successors, (268), 212 states have internal predecessors, (268), 20 states have call successors, (20), 13 states have call predecessors, (20), 22 states have return successors, (42), 24 states have call predecessors, (42), 19 states have call successors, (42) [2021-08-27 06:23:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 330 transitions. [2021-08-27 06:23:23,027 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 330 transitions. Word has length 38 [2021-08-27 06:23:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:23,027 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 330 transitions. [2021-08-27 06:23:23,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:23:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 330 transitions. [2021-08-27 06:23:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-27 06:23:23,029 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:23,029 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:23,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-27 06:23:23,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:23:23,242 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:23:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2115617282, now seen corresponding path program 1 times [2021-08-27 06:23:23,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:23,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853387007] [2021-08-27 06:23:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:23,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:23,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:23,244 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:23:23,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-27 06:23:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:23,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:23:23,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 06:23:24,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 06:23:24,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:24,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853387007] [2021-08-27 06:23:24,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853387007] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:24,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:24,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-08-27 06:23:24,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988401532] [2021-08-27 06:23:24,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:23:24,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:23:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:23:24,796 INFO L87 Difference]: Start difference. First operand 250 states and 330 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2021-08-27 06:23:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:25,258 INFO L93 Difference]: Finished difference Result 249 states and 328 transitions. [2021-08-27 06:23:25,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:23:25,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 39 [2021-08-27 06:23:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:25,260 INFO L225 Difference]: With dead ends: 249 [2021-08-27 06:23:25,260 INFO L226 Difference]: Without dead ends: 249 [2021-08-27 06:23:25,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 360.9ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-27 06:23:25,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-08-27 06:23:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-08-27 06:23:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 191 states have (on average 1.3926701570680629) internal successors, (266), 211 states have internal predecessors, (266), 20 states have call successors, (20), 13 states have call predecessors, (20), 22 states have return successors, (42), 24 states have call predecessors, (42), 19 states have call successors, (42) [2021-08-27 06:23:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 328 transitions. [2021-08-27 06:23:25,267 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 328 transitions. Word has length 39 [2021-08-27 06:23:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:25,267 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 328 transitions. [2021-08-27 06:23:25,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2021-08-27 06:23:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 328 transitions. [2021-08-27 06:23:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-27 06:23:25,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:25,268 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:25,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-08-27 06:23:25,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:23:25,485 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:23:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash -274996284, now seen corresponding path program 1 times [2021-08-27 06:23:25,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:25,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402101064] [2021-08-27 06:23:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:25,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:25,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:25,487 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:23:25,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-08-27 06:23:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:26,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 06:23:26,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 06:23:26,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 06:23:26,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:26,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402101064] [2021-08-27 06:23:26,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402101064] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:23:26,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:23:26,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:23:26,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643730715] [2021-08-27 06:23:26,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:23:26,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:23:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:26,512 INFO L87 Difference]: Start difference. First operand 249 states and 328 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:23:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:26,554 INFO L93 Difference]: Finished difference Result 201 states and 243 transitions. [2021-08-27 06:23:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:23:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2021-08-27 06:23:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:26,571 INFO L225 Difference]: With dead ends: 201 [2021-08-27 06:23:26,571 INFO L226 Difference]: Without dead ends: 201 [2021-08-27 06:23:26,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:23:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-08-27 06:23:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 180. [2021-08-27 06:23:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 134 states have (on average 1.3208955223880596) internal successors, (177), 149 states have internal predecessors, (177), 15 states have call successors, (15), 11 states have call predecessors, (15), 15 states have return successors, (26), 19 states have call predecessors, (26), 14 states have call successors, (26) [2021-08-27 06:23:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 218 transitions. [2021-08-27 06:23:26,577 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 218 transitions. Word has length 39 [2021-08-27 06:23:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:26,577 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 218 transitions. [2021-08-27 06:23:26,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 06:23:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 218 transitions. [2021-08-27 06:23:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-27 06:23:26,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:26,578 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:26,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-08-27 06:23:26,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:23:26,789 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:23:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1849834272, now seen corresponding path program 1 times [2021-08-27 06:23:26,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:26,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867665969] [2021-08-27 06:23:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:26,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:26,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:26,791 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:23:26,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-08-27 06:23:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:23:27,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:23:27,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:27,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:23:28,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:28,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867665969] [2021-08-27 06:23:28,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867665969] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:23:28,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:23:28,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2021-08-27 06:23:28,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128676256] [2021-08-27 06:23:28,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 06:23:28,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:28,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 06:23:28,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:23:28,519 INFO L87 Difference]: Start difference. First operand 180 states and 218 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-27 06:23:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:29,236 INFO L93 Difference]: Finished difference Result 204 states and 244 transitions. [2021-08-27 06:23:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:23:29,237 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 42 [2021-08-27 06:23:29,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:29,238 INFO L225 Difference]: With dead ends: 204 [2021-08-27 06:23:29,238 INFO L226 Difference]: Without dead ends: 198 [2021-08-27 06:23:29,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 576.3ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-08-27 06:23:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-27 06:23:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 178. [2021-08-27 06:23:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.3106060606060606) internal successors, (173), 147 states have internal predecessors, (173), 15 states have call successors, (15), 11 states have call predecessors, (15), 15 states have return successors, (26), 19 states have call predecessors, (26), 14 states have call successors, (26) [2021-08-27 06:23:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 214 transitions. [2021-08-27 06:23:29,245 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 214 transitions. Word has length 42 [2021-08-27 06:23:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:29,245 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 214 transitions. [2021-08-27 06:23:29,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-27 06:23:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 214 transitions. [2021-08-27 06:23:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-27 06:23:29,246 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:29,246 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:29,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-08-27 06:23:29,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:23:29,447 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:23:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:29,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1858382576, now seen corresponding path program 2 times [2021-08-27 06:23:29,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:29,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453413693] [2021-08-27 06:23:29,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:23:29,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:29,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:29,449 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:23:29,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-08-27 06:23:30,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:23:30,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:23:30,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 06:23:30,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:23:30,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:23:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:31,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:23:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:23:35,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:23:35,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453413693] [2021-08-27 06:23:35,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453413693] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:23:35,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:23:35,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2021-08-27 06:23:35,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602362992] [2021-08-27 06:23:35,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-27 06:23:35,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:23:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-27 06:23:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2021-08-27 06:23:35,777 INFO L87 Difference]: Start difference. First operand 178 states and 214 transitions. Second operand has 31 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:23:59,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:23:59,202 INFO L93 Difference]: Finished difference Result 212 states and 286 transitions. [2021-08-27 06:23:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-27 06:23:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2021-08-27 06:23:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:23:59,205 INFO L225 Difference]: With dead ends: 212 [2021-08-27 06:23:59,205 INFO L226 Difference]: Without dead ends: 212 [2021-08-27 06:23:59,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 22300.3ms TimeCoverageRelationStatistics Valid=784, Invalid=2756, Unknown=0, NotChecked=0, Total=3540 [2021-08-27 06:23:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-08-27 06:23:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 202. [2021-08-27 06:23:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 156 states have (on average 1.314102564102564) internal successors, (205), 171 states have internal predecessors, (205), 15 states have call successors, (15), 11 states have call predecessors, (15), 15 states have return successors, (26), 19 states have call predecessors, (26), 14 states have call successors, (26) [2021-08-27 06:23:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 246 transitions. [2021-08-27 06:23:59,213 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 246 transitions. Word has length 41 [2021-08-27 06:23:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:23:59,213 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 246 transitions. [2021-08-27 06:23:59,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:23:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 246 transitions. [2021-08-27 06:23:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-27 06:23:59,214 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:23:59,214 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:23:59,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-08-27 06:23:59,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:23:59,425 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting free_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:23:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:23:59,425 INFO L82 PathProgramCache]: Analyzing trace with hash 799634172, now seen corresponding path program 1 times [2021-08-27 06:23:59,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:23:59,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145237128] [2021-08-27 06:23:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:23:59,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:23:59,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:23:59,427 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:23:59,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-08-27 06:24:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:00,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 06:24:00,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:24:00,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:01,145 INFO L388 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 8 treesize of output 6 [2021-08-27 06:24:01,456 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 06:24:01,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 [2021-08-27 06:24:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:24:02,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:02,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145237128] [2021-08-27 06:24:02,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145237128] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:24:02,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:24:02,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-08-27 06:24:02,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304316214] [2021-08-27 06:24:02,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 06:24:02,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:02,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 06:24:02,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-08-27 06:24:02,185 INFO L87 Difference]: Start difference. First operand 202 states and 246 transitions. Second operand has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-27 06:24:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:04,025 INFO L93 Difference]: Finished difference Result 252 states and 305 transitions. [2021-08-27 06:24:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:24:04,027 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 46 [2021-08-27 06:24:04,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:04,028 INFO L225 Difference]: With dead ends: 252 [2021-08-27 06:24:04,028 INFO L226 Difference]: Without dead ends: 252 [2021-08-27 06:24:04,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1354.8ms TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-08-27 06:24:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-08-27 06:24:04,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 190. [2021-08-27 06:24:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 164 states have internal predecessors, (199), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:24:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 231 transitions. [2021-08-27 06:24:04,034 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 231 transitions. Word has length 46 [2021-08-27 06:24:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:04,034 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 231 transitions. [2021-08-27 06:24:04,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-27 06:24:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 231 transitions. [2021-08-27 06:24:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-27 06:24:04,035 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:04,035 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:04,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-08-27 06:24:04,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:24:04,246 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:24:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1464713773, now seen corresponding path program 1 times [2021-08-27 06:24:04,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:04,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281377731] [2021-08-27 06:24:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:04,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:04,248 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:04,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-08-27 06:24:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:05,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 06:24:05,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:24:05,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 06:24:06,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:06,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281377731] [2021-08-27 06:24:06,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281377731] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:24:06,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:24:06,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-08-27 06:24:06,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734662541] [2021-08-27 06:24:06,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 06:24:06,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 06:24:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:24:06,394 INFO L87 Difference]: Start difference. First operand 190 states and 231 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-27 06:24:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:07,285 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2021-08-27 06:24:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 06:24:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 46 [2021-08-27 06:24:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:07,287 INFO L225 Difference]: With dead ends: 224 [2021-08-27 06:24:07,287 INFO L226 Difference]: Without dead ends: 224 [2021-08-27 06:24:07,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1017.4ms TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-08-27 06:24:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-08-27 06:24:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 209. [2021-08-27 06:24:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 180 states have internal predecessors, (214), 14 states have call successors, (14), 12 states have call predecessors, (14), 18 states have return successors, (24), 16 states have call predecessors, (24), 13 states have call successors, (24) [2021-08-27 06:24:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 252 transitions. [2021-08-27 06:24:07,292 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 252 transitions. Word has length 46 [2021-08-27 06:24:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:07,292 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 252 transitions. [2021-08-27 06:24:07,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-27 06:24:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 252 transitions. [2021-08-27 06:24:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-27 06:24:07,293 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:07,293 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:07,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:07,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:24:07,505 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting free_17Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:24:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash -981144087, now seen corresponding path program 1 times [2021-08-27 06:24:07,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:07,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043561818] [2021-08-27 06:24:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:07,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:07,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:07,507 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:07,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-08-27 06:24:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:08,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 06:24:08,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:08,580 INFO L388 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 11 treesize of output 7 [2021-08-27 06:24:08,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-08-27 06:24:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:24:08,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:09,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 32 [2021-08-27 06:24:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:24:09,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:09,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043561818] [2021-08-27 06:24:09,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043561818] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:24:09,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:24:09,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-08-27 06:24:09,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529413214] [2021-08-27 06:24:09,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 06:24:09,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:09,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 06:24:09,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:24:09,494 INFO L87 Difference]: Start difference. First operand 209 states and 252 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 06:24:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:10,687 INFO L93 Difference]: Finished difference Result 285 states and 339 transitions. [2021-08-27 06:24:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 06:24:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2021-08-27 06:24:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:10,690 INFO L225 Difference]: With dead ends: 285 [2021-08-27 06:24:10,690 INFO L226 Difference]: Without dead ends: 285 [2021-08-27 06:24:10,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 652.3ms TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:24:10,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-08-27 06:24:10,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2021-08-27 06:24:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 196 states have (on average 1.3622448979591837) internal successors, (267), 217 states have internal predecessors, (267), 17 states have call successors, (17), 14 states have call predecessors, (17), 23 states have return successors, (32), 19 states have call predecessors, (32), 16 states have call successors, (32) [2021-08-27 06:24:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 316 transitions. [2021-08-27 06:24:10,696 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 316 transitions. Word has length 47 [2021-08-27 06:24:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:10,697 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 316 transitions. [2021-08-27 06:24:10,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 06:24:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 316 transitions. [2021-08-27 06:24:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-27 06:24:10,698 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:10,698 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:10,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:10,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:24:10,909 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting free_17Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:24:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:10,909 INFO L82 PathProgramCache]: Analyzing trace with hash -350695173, now seen corresponding path program 1 times [2021-08-27 06:24:10,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:10,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124758181] [2021-08-27 06:24:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:10,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:10,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:10,911 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:10,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-08-27 06:24:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:11,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 06:24:11,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:12,687 INFO L388 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 [2021-08-27 06:24:13,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-08-27 06:24:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 06:24:13,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:13,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 32 [2021-08-27 06:24:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:24:14,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:14,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124758181] [2021-08-27 06:24:14,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124758181] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:24:14,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:24:14,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2021-08-27 06:24:14,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995780986] [2021-08-27 06:24:14,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 06:24:14,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 06:24:14,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-08-27 06:24:14,402 INFO L87 Difference]: Start difference. First operand 251 states and 316 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-08-27 06:24:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:17,418 INFO L93 Difference]: Finished difference Result 284 states and 337 transitions. [2021-08-27 06:24:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 06:24:17,421 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 48 [2021-08-27 06:24:17,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:17,422 INFO L225 Difference]: With dead ends: 284 [2021-08-27 06:24:17,422 INFO L226 Difference]: Without dead ends: 284 [2021-08-27 06:24:17,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1456.2ms TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-08-27 06:24:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-08-27 06:24:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 253. [2021-08-27 06:24:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 198 states have (on average 1.3585858585858586) internal successors, (269), 219 states have internal predecessors, (269), 17 states have call successors, (17), 14 states have call predecessors, (17), 23 states have return successors, (32), 19 states have call predecessors, (32), 16 states have call successors, (32) [2021-08-27 06:24:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 318 transitions. [2021-08-27 06:24:17,431 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 318 transitions. Word has length 48 [2021-08-27 06:24:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:17,431 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 318 transitions. [2021-08-27 06:24:17,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-08-27 06:24:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 318 transitions. [2021-08-27 06:24:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-27 06:24:17,433 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:17,433 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:17,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-08-27 06:24:17,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:24:17,645 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting free_17Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:24:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:17,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2013351979, now seen corresponding path program 1 times [2021-08-27 06:24:17,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:17,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315709134] [2021-08-27 06:24:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:17,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:17,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:17,646 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:17,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-08-27 06:24:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:18,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 06:24:18,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:18,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:24:18,825 INFO L388 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 21 treesize of output 17 [2021-08-27 06:24:19,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 15 [2021-08-27 06:24:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:24:19,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:19,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 52 treesize of output 48 [2021-08-27 06:24:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 06:24:20,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:20,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315709134] [2021-08-27 06:24:20,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315709134] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:24:20,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:24:20,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-08-27 06:24:20,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707074854] [2021-08-27 06:24:20,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 06:24:20,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:20,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 06:24:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:24:20,101 INFO L87 Difference]: Start difference. First operand 253 states and 318 transitions. Second operand has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 06:24:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:21,312 INFO L93 Difference]: Finished difference Result 257 states and 322 transitions. [2021-08-27 06:24:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:24:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2021-08-27 06:24:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:21,314 INFO L225 Difference]: With dead ends: 257 [2021-08-27 06:24:21,314 INFO L226 Difference]: Without dead ends: 257 [2021-08-27 06:24:21,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 840.8ms TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-08-27 06:24:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-08-27 06:24:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2021-08-27 06:24:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 182 states have (on average 1.3516483516483517) internal successors, (246), 200 states have internal predecessors, (246), 16 states have call successors, (16), 13 states have call predecessors, (16), 19 states have return successors, (28), 18 states have call predecessors, (28), 15 states have call successors, (28) [2021-08-27 06:24:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 290 transitions. [2021-08-27 06:24:21,319 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 290 transitions. Word has length 49 [2021-08-27 06:24:21,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:21,320 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 290 transitions. [2021-08-27 06:24:21,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 06:24:21,320 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 290 transitions. [2021-08-27 06:24:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-27 06:24:21,323 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:21,324 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:21,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:21,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:24:21,533 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-27 06:24:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:21,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1603414821, now seen corresponding path program 2 times [2021-08-27 06:24:21,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:21,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018152455] [2021-08-27 06:24:21,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:24:21,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:21,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:21,534 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:21,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-08-27 06:24:22,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:24:22,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:24:22,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-27 06:24:22,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:22,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:24:22,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:24:26,293 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:24:26,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 51 [2021-08-27 06:24:26,320 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:24:26,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 45 treesize of output 45 [2021-08-27 06:24:27,109 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:24:27,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2021-08-27 06:24:27,130 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:24:27,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 42 treesize of output 42 [2021-08-27 06:24:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:24:27,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:45,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:45,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018152455] [2021-08-27 06:24:45,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:24:45,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1487044428] [2021-08-27 06:24:45,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:24:45,498 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 06:24:45,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 06:24:45,509 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 06:24:45,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-08-27 06:24:46,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:24:46,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:24:46,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-27 06:24:46,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:46,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:24:46,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:24:47,607 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:24:47,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2021-08-27 06:24:47,628 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:24:47,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 43 treesize of output 43 [2021-08-27 06:24:48,048 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:24:48,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2021-08-27 06:24:48,067 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:24:48,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 42 treesize of output 42 [2021-08-27 06:24:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:24:48,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:25:05,639 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_156| (_ BitVec 32)) (v_alloc_17_~i~0_BEFORE_CALL_20 (_ BitVec 32)) (v_alloc_17_~array.base_BEFORE_CALL_18 (_ BitVec 32)) (v_alloc_17_~array.offset_BEFORE_CALL_16 (_ BitVec 32))) (or (exists ((|v_ldv_malloc_#res.base_151| (_ BitVec 32))) (and (or (not (let ((.cse0 (bvmul v_alloc_17_~i~0_BEFORE_CALL_20 (_ bv4 32)))) (bvule (bvadd v_alloc_17_~array.offset_BEFORE_CALL_16 .cse0) (bvadd (_ bv4 32) v_alloc_17_~array.offset_BEFORE_CALL_16 .cse0)))) (exists ((v_ldv_malloc_~size_135 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_alloc_17_~array.offset_BEFORE_CALL_16 (bvmul v_alloc_17_~i~0_BEFORE_CALL_20 (_ bv4 32))) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_151| v_ldv_malloc_~size_135) v_alloc_17_~array.base_BEFORE_CALL_18))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_151|)))))))))) (and (let ((.cse1 (bvmul v_alloc_17_~i~0_BEFORE_CALL_20 (_ bv4 32)))) (bvule (bvadd v_alloc_17_~array.offset_BEFORE_CALL_16 .cse1) (bvadd (_ bv4 32) v_alloc_17_~array.offset_BEFORE_CALL_16 .cse1))) (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_alloc_17_~array.offset_BEFORE_CALL_16 (bvmul v_alloc_17_~i~0_BEFORE_CALL_20 (_ bv4 32))) (select (store |c_#length| |v_ldv_malloc_#res.base_156| ldv_malloc_~size) v_alloc_17_~array.base_BEFORE_CALL_18)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_156|)))))) is different from false [2021-08-27 06:25:07,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:25:07,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687011088] [2021-08-27 06:25:07,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:25:07,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:25:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:25:07,615 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 06:25:07,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-27 06:25:08,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:25:08,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:25:08,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-27 06:25:08,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:25:08,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:25:08,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:25:09,832 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:25:09,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2021-08-27 06:25:09,854 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:25:09,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 42 treesize of output 42 [2021-08-27 06:25:10,326 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:25:10,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2021-08-27 06:25:10,348 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:25:10,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 43 treesize of output 43 [2021-08-27 06:25:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:25:10,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:25:55,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:25:55,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:25:55,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 06:25:55,476 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 06:25:55,476 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 06:25:55,480 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err1REQUIRES_VIOLATION [2021-08-27 06:25:55,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,482 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-08-27 06:25:55,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-08-27 06:25:55,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-08-27 06:25:55,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-08-27 06:25:55,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-08-27 06:25:55,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-08-27 06:25:55,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-08-27 06:25:55,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-08-27 06:25:55,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-08-27 06:25:55,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-08-27 06:25:55,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:25:55,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:25:55,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-08-27 06:25:55,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-08-27 06:25:55,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-08-27 06:25:55,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-08-27 06:25:55,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-08-27 06:25:55,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-08-27 06:25:55,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err0REQUIRES_VIOLATION [2021-08-27 06:25:55,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err2REQUIRES_VIOLATION [2021-08-27 06:25:55,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err3REQUIRES_VIOLATION [2021-08-27 06:25:55,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err7REQUIRES_VIOLATION [2021-08-27 06:25:55,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err8REQUIRES_VIOLATION [2021-08-27 06:25:55,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:25:55,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-08-27 06:25:55,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-08-27 06:25:55,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-08-27 06:25:55,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-08-27 06:25:55,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:25:55,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:25:55,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err0REQUIRES_VIOLATION [2021-08-27 06:25:55,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err1REQUIRES_VIOLATION [2021-08-27 06:25:55,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-08-27 06:25:55,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-08-27 06:25:55,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:55,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-08-27 06:25:55,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-27 06:25:55,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-08-27 06:25:56,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:25:56,107 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:25:56,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:25:56 BoogieIcfgContainer [2021-08-27 06:25:56,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:25:56,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:25:56,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:25:56,116 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:25:56,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:13:51" (3/4) ... [2021-08-27 06:25:56,120 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:25:56,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:25:56,121 INFO L168 Benchmark]: Toolchain (without parser) took 727173.77 ms. Allocated memory was 56.6 MB in the beginning and 161.5 MB in the end (delta: 104.9 MB). Free memory was 32.2 MB in the beginning and 70.8 MB in the end (delta: -38.6 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:56,122 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 56.6 MB. Free memory was 38.1 MB in the beginning and 38.1 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:25:56,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.31 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 32.0 MB in the beginning and 48.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:56,125 INFO L168 Benchmark]: Boogie Preprocessor took 124.29 ms. Allocated memory is still 71.3 MB. Free memory was 48.8 MB in the beginning and 43.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:56,126 INFO L168 Benchmark]: RCFGBuilder took 1708.83 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 43.8 MB in the beginning and 59.2 MB in the end (delta: -15.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:56,126 INFO L168 Benchmark]: TraceAbstraction took 724620.63 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 59.2 MB in the beginning and 70.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:56,126 INFO L168 Benchmark]: Witness Printer took 4.73 ms. Allocated memory is still 161.5 MB. Free memory is still 70.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:25:56,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 56.6 MB. Free memory was 38.1 MB in the beginning and 38.1 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 709.31 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 32.0 MB in the beginning and 48.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 124.29 ms. Allocated memory is still 71.3 MB. Free memory was 48.8 MB in the beginning and 43.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1708.83 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 43.8 MB in the beginning and 59.2 MB in the end (delta: -15.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 724620.63 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 59.2 MB in the beginning and 70.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.73 ms. Allocated memory is still 161.5 MB. Free memory is still 70.8 MB. There was no memory consumed. 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 - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L799] CALL entry_point() [L785] int i; [L786] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; [L786] RET, EXPR ldv_positive() [L786] int len = ldv_positive(); [L787] COND FALSE !(!(len<16777216)) [L788] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L788] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L788] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L789] COND TRUE \read(**array) [L790] i=0 [L790] COND TRUE i