./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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_test6_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff .................................................................................................................................... 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_test6_1.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 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:54:28,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:54:28,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:54:28,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:54:28,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:54:28,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:54:28,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:54:28,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:54:28,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:54:28,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:54:28,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:54:28,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:54:28,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:54:28,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:54:28,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:54:28,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:54:28,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:54:28,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:54:28,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:54:28,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:54:28,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:54:28,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:54:28,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:54:28,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:54:28,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:54:28,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:54:28,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:54:28,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:54:28,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:54:28,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:54:28,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:54:28,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:54:28,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:54:28,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:54:28,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:54:28,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:54:28,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:54:28,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:54:28,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:54:28,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:54:28,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:54:28,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:54:28,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:54:28,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:54:28,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:54:28,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:54:28,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:54:28,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:54:28,951 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:54:28,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:54:28,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:54:28,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:54:28,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:54:28,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:54:28,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:54:28,953 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:54:28,953 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:54:28,953 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:54:28,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:54:28,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:54:28,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:54:28,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:54:28,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:54:28,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:54:28,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:54:28,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:28,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:54:28,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:54:28,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:54:28,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:54:28,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:54:28,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2021-08-30 17:54:29,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:54:29,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:54:29,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:54:29,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:54:29,321 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:54:29,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-08-30 17:54:29,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52746b65a/cab5238086014b8085de2e915a46cfaa/FLAGe5080a29d [2021-08-30 17:54:29,940 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:54:29,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-08-30 17:54:29,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52746b65a/cab5238086014b8085de2e915a46cfaa/FLAGe5080a29d [2021-08-30 17:54:30,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52746b65a/cab5238086014b8085de2e915a46cfaa [2021-08-30 17:54:30,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:54:30,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:54:30,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:30,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:54:30,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:54:30,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:30" (1/1) ... [2021-08-30 17:54:30,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20351544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:30, skipping insertion in model container [2021-08-30 17:54:30,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:30" (1/1) ... [2021-08-30 17:54:30,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:54:30,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:30,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:30,866 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) [2021-08-30 17:54:30,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@384c0e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:30, skipping insertion in model container [2021-08-30 17:54:30,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:30,868 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 17:54:30,870 INFO L158 Benchmark]: Toolchain (without parser) took 460.17ms. Allocated memory is still 54.5MB. Free memory was 30.1MB in the beginning and 30.3MB in the end (delta: -147.9kB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-08-30 17:54:30,871 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 37.1MB in the beginning and 37.0MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:54:30,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.15ms. Allocated memory is still 54.5MB. Free memory was 29.9MB in the beginning and 30.3MB in the end (delta: -374.3kB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-08-30 17:54:30,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 37.1MB in the beginning and 37.0MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.15ms. Allocated memory is still 54.5MB. Free memory was 29.9MB in the beginning and 30.3MB in the end (delta: -374.3kB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * 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-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:54:32,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:54:32,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:54:32,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:54:32,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:54:32,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:54:32,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:54:32,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:54:32,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:54:32,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:54:32,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:54:32,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:54:32,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:54:32,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:54:32,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:54:32,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:54:32,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:54:32,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:54:32,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:54:32,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:54:32,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:54:32,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:54:32,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:54:32,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:54:32,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:54:32,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:54:32,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:54:32,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:54:32,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:54:32,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:54:32,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:54:32,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:54:32,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:54:32,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:54:32,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:54:32,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:54:32,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:54:32,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:54:32,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:54:32,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:54:32,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:54:32,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:54:32,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:54:32,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:54:32,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:54:32,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:54:32,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:54:32,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:54:32,642 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:54:32,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:54:32,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:54:32,642 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:54:32,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:54:32,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:54:32,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:54:32,643 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:54:32,643 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:54:32,643 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:54:32,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:54:32,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:54:32,644 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:54:32,644 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:54:32,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:54:32,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:54:32,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:54:32,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:54:32,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:54:32,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:32,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:54:32,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:54:32,645 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:54:32,645 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:54:32,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:54:32,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:54:32,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2021-08-30 17:54:32,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:54:32,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:54:32,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:54:32,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:54:32,991 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:54:32,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-08-30 17:54:33,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50542c357/6857f6092deb42b48c429821d2baf49c/FLAGfc1dcfb48 [2021-08-30 17:54:33,608 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:54:33,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-08-30 17:54:33,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50542c357/6857f6092deb42b48c429821d2baf49c/FLAGfc1dcfb48 [2021-08-30 17:54:34,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50542c357/6857f6092deb42b48c429821d2baf49c [2021-08-30 17:54:34,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:54:34,071 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:54:34,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:34,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:54:34,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:54:34,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f26533d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34, skipping insertion in model container [2021-08-30 17:54:34,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:54:34,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:34,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:34,463 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 17:54:34,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:34,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:34,534 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:54:34,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:34,618 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:54:34,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34 WrapperNode [2021-08-30 17:54:34,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:34,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:54:34,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:54:34,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:54:34,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:54:34,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:54:34,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:54:34,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:54:34,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:34,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:54:34,766 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) [2021-08-30 17:54:34,781 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 [2021-08-30 17:54:34,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:54:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:54:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:54:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:54:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:54:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:54:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:54:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:54:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:54:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-30 17:54:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-30 17:54:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-30 17:54:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-30 17:54:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:54:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-30 17:54:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-30 17:54:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-30 17:54:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-30 17:54:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-30 17:54:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-30 17:54:34,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-30 17:54:34,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-30 17:54:34,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-30 17:54:34,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-30 17:54:34,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-30 17:54:34,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-30 17:54:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-30 17:54:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-30 17:54:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-30 17:54:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-30 17:54:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-30 17:54:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-30 17:54:34,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-30 17:54:34,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-30 17:54:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-30 17:54:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-30 17:54:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-30 17:54:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-30 17:54:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-30 17:54:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure probe2_6 [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-30 17:54:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:54:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:54:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:54:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:54:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:54:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:54:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:54:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:54:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:54:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:54:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:54:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:54:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:54:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:54:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:54:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:54:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:54:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:54:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:54:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:54:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:54:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:54:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:54:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:54:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:54:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:54:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:54:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:54:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:54:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:54:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:54:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:54:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:54:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:54:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:54:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:54:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:54:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:54:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:54:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-30 17:54:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:54:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-30 17:54:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-30 17:54:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-30 17:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-30 17:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-30 17:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:54:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-30 17:54:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-30 17:54:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-30 17:54:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:54:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-30 17:54:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-30 17:54:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-30 17:54:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-30 17:54:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-30 17:54:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-30 17:54:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:54:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-30 17:54:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-30 17:54:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-30 17:54:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-30 17:54:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-30 17:54:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:54:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:54:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-30 17:54:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-30 17:54:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:54:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-30 17:54:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-30 17:54:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-30 17:54:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-30 17:54:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-30 17:54:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-30 17:54:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-30 17:54:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-30 17:54:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-30 17:54:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-30 17:54:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-30 17:54:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:54:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-30 17:54:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-30 17:54:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-08-30 17:54:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-08-30 17:54:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure probe2_6 [2021-08-30 17:54:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-08-30 17:54:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-30 17:54:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:54:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:54:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:54:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:54:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:54:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:54:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-30 17:54:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-30 17:54:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-30 17:54:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-30 17:54:35,333 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:54:35,399 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:54:35,472 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:54:35,472 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 17:54:35,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:35 BoogieIcfgContainer [2021-08-30 17:54:35,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:54:35,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:54:35,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:54:35,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:54:35,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:54:34" (1/3) ... [2021-08-30 17:54:35,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c172d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:54:35, skipping insertion in model container [2021-08-30 17:54:35,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (2/3) ... [2021-08-30 17:54:35,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c172d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:54:35, skipping insertion in model container [2021-08-30 17:54:35,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:35" (3/3) ... [2021-08-30 17:54:35,484 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2021-08-30 17:54:35,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:54:35,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2021-08-30 17:54:35,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:54:35,537 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 [2021-08-30 17:54:35,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2021-08-30 17:54:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-08-30 17:54:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:35,558 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:35,559 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:35,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:35,579 INFO L82 PathProgramCache]: Analyzing trace with hash -42624849, now seen corresponding path program 1 times [2021-08-30 17:54:35,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:35,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330851490] [2021-08-30 17:54:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:35,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:35,598 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) [2021-08-30 17:54:35,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:54:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:35,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:35,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:35,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:35,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:35,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330851490] [2021-08-30 17:54:35,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330851490] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:35,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:35,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:54:35,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631480072] [2021-08-30 17:54:35,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:35,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:36,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:36,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:36,020 INFO L87 Difference]: Start difference. First operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:54:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:36,311 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-08-30 17:54:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-08-30 17:54:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:36,321 INFO L225 Difference]: With dead ends: 85 [2021-08-30 17:54:36,321 INFO L226 Difference]: Without dead ends: 82 [2021-08-30 17:54:36,322 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.85ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:36,325 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 196.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.93ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:36,326 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 78 Invalid, 258 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 250.93ms Time] [2021-08-30 17:54:36,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-30 17:54:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2021-08-30 17:54:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 49 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:54:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-08-30 17:54:36,358 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2021-08-30 17:54:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:36,359 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-08-30 17:54:36,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:54:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-08-30 17:54:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:36,360 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:36,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:36,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:36,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:36,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:36,570 INFO L82 PathProgramCache]: Analyzing trace with hash -239138354, now seen corresponding path program 1 times [2021-08-30 17:54:36,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:36,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001824913] [2021-08-30 17:54:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:36,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:36,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:36,572 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) [2021-08-30 17:54:36,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:54:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:36,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:54:36,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:36,797 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:36,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:54:36,909 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 5 treesize of output 3 [2021-08-30 17:54:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:37,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:37,277 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 [2021-08-30 17:54:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:37,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:37,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001824913] [2021-08-30 17:54:37,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001824913] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:37,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:37,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-30 17:54:37,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027981293] [2021-08-30 17:54:37,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:54:37,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:54:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:37,456 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:54:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:37,783 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-08-30 17:54:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:54:37,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-08-30 17:54:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:37,785 INFO L225 Difference]: With dead ends: 110 [2021-08-30 17:54:37,785 INFO L226 Difference]: Without dead ends: 110 [2021-08-30 17:54:37,785 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.22ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:54:37,787 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 106 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 250.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 299.36ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:37,787 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 23 Invalid, 233 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [32 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 299.36ms Time] [2021-08-30 17:54:37,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-30 17:54:37,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2021-08-30 17:54:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 73 states have internal predecessors, (90), 11 states have call successors, (11), 11 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2021-08-30 17:54:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2021-08-30 17:54:37,797 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 20 [2021-08-30 17:54:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:37,797 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2021-08-30 17:54:37,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:54:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2021-08-30 17:54:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:37,798 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:37,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:37,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-30 17:54:38,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:38,010 INFO L82 PathProgramCache]: Analyzing trace with hash -239138355, now seen corresponding path program 1 times [2021-08-30 17:54:38,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:38,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890106540] [2021-08-30 17:54:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:38,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:38,012 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) [2021-08-30 17:54:38,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:54:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:38,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 17:54:38,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:38,187 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:38,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:38,265 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 7 treesize of output 5 [2021-08-30 17:54:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:38,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:38,419 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 10 treesize of output 8 [2021-08-30 17:54:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:38,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:38,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890106540] [2021-08-30 17:54:38,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890106540] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:38,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:38,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-30 17:54:38,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554007289] [2021-08-30 17:54:38,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:38,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:38,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:38,482 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:54:38,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:38,690 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2021-08-30 17:54:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-08-30 17:54:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:38,692 INFO L225 Difference]: With dead ends: 131 [2021-08-30 17:54:38,692 INFO L226 Difference]: Without dead ends: 127 [2021-08-30 17:54:38,692 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.13ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:38,693 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 142 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.90ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:38,693 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 17 Invalid, 175 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [39 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 184.90ms Time] [2021-08-30 17:54:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-30 17:54:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 104. [2021-08-30 17:54:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 80 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-08-30 17:54:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-08-30 17:54:38,706 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2021-08-30 17:54:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:38,706 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-08-30 17:54:38,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:54:38,707 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-08-30 17:54:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:54:38,707 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:38,708 INFO L513 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] [2021-08-30 17:54:38,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:38,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,908 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:38,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:38,909 INFO L82 PathProgramCache]: Analyzing trace with hash 240943427, now seen corresponding path program 1 times [2021-08-30 17:54:38,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:38,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546797994] [2021-08-30 17:54:38,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:38,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:38,910 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) [2021-08-30 17:54:38,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:54:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:39,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:39,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:39,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546797994] [2021-08-30 17:54:39,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546797994] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:39,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:39,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 17:54:39,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918929327] [2021-08-30 17:54:39,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:39,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:39,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:39,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:39,173 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:54:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:39,302 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2021-08-30 17:54:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:39,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-08-30 17:54:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:39,304 INFO L225 Difference]: With dead ends: 103 [2021-08-30 17:54:39,304 INFO L226 Difference]: Without dead ends: 103 [2021-08-30 17:54:39,304 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.55ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:39,305 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.36ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:39,305 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 175 Unknown, 0 Unchecked, 1.25ms Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 123.36ms Time] [2021-08-30 17:54:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-30 17:54:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-08-30 17:54:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 79 states have internal predecessors, (97), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-08-30 17:54:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2021-08-30 17:54:39,312 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 22 [2021-08-30 17:54:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:39,312 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2021-08-30 17:54:39,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:54:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2021-08-30 17:54:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:54:39,313 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:39,313 INFO L513 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] [2021-08-30 17:54:39,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:39,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:39,522 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:39,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:39,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2116285580, now seen corresponding path program 1 times [2021-08-30 17:54:39,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:39,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086524644] [2021-08-30 17:54:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:39,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:39,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:39,524 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) [2021-08-30 17:54:39,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:54:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:39,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 17:54:39,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:39,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086524644] [2021-08-30 17:54:39,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086524644] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:39,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:39,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-30 17:54:39,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247325378] [2021-08-30 17:54:39,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:54:39,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:54:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:39,799 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:54:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:40,033 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2021-08-30 17:54:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:54:40,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-08-30 17:54:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:40,034 INFO L225 Difference]: With dead ends: 121 [2021-08-30 17:54:40,035 INFO L226 Difference]: Without dead ends: 113 [2021-08-30 17:54:40,035 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 54.15ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:54:40,035 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 210.08ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:40,036 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 103 Invalid, 342 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [6 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 210.08ms Time] [2021-08-30 17:54:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-30 17:54:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-08-30 17:54:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.391304347826087) internal successors, (96), 82 states have internal predecessors, (96), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-08-30 17:54:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-08-30 17:54:40,041 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 22 [2021-08-30 17:54:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:40,041 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-08-30 17:54:40,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:54:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-08-30 17:54:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 17:54:40,042 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:40,042 INFO L513 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] [2021-08-30 17:54:40,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:40,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:40,251 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1120687975, now seen corresponding path program 1 times [2021-08-30 17:54:40,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:40,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125610196] [2021-08-30 17:54:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:40,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:40,253 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) [2021-08-30 17:54:40,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:54:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:40,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:54:40,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:40,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:40,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:40,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125610196] [2021-08-30 17:54:40,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125610196] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:40,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:40,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-08-30 17:54:40,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510422576] [2021-08-30 17:54:40,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:54:40,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:40,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:54:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:40,642 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:54:40,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:40,888 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2021-08-30 17:54:40,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:54:40,889 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), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-08-30 17:54:40,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:40,889 INFO L225 Difference]: With dead ends: 108 [2021-08-30 17:54:40,890 INFO L226 Difference]: Without dead ends: 108 [2021-08-30 17:54:40,890 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 73.52ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:40,890 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 74 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 199.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 236.46ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:40,891 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 16 Invalid, 313 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [9 Valid, 241 Invalid, 0 Unknown, 63 Unchecked, 236.46ms Time] [2021-08-30 17:54:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-08-30 17:54:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2021-08-30 17:54:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 81 states have internal predecessors, (94), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-08-30 17:54:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-08-30 17:54:40,897 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 23 [2021-08-30 17:54:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:40,897 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-08-30 17:54:40,897 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), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:54:40,897 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-08-30 17:54:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:54:40,898 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:40,898 INFO L513 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] [2021-08-30 17:54:40,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:41,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:41,107 INFO L82 PathProgramCache]: Analyzing trace with hash -381588475, now seen corresponding path program 1 times [2021-08-30 17:54:41,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:41,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279576299] [2021-08-30 17:54:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:41,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:41,109 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) [2021-08-30 17:54:41,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:54:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:41,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:41,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:41,230 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 [2021-08-30 17:54:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:41,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279576299] [2021-08-30 17:54:41,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279576299] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:41,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:41,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-08-30 17:54:41,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266612478] [2021-08-30 17:54:41,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:54:41,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:54:41,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:41,386 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:41,500 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2021-08-30 17:54:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:54:41,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 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 24 [2021-08-30 17:54:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:41,502 INFO L225 Difference]: With dead ends: 106 [2021-08-30 17:54:41,502 INFO L226 Difference]: Without dead ends: 106 [2021-08-30 17:54:41,502 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24.94ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:41,503 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 107.92ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:41,504 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 200 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 51 Unchecked, 107.92ms Time] [2021-08-30 17:54:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-30 17:54:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-08-30 17:54:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 81 states have internal predecessors, (93), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-08-30 17:54:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-08-30 17:54:41,525 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 24 [2021-08-30 17:54:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:41,525 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-08-30 17:54:41,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-08-30 17:54:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:54:41,526 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:41,527 INFO L513 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] [2021-08-30 17:54:41,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:41,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,727 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:41,728 INFO L82 PathProgramCache]: Analyzing trace with hash -887147100, now seen corresponding path program 1 times [2021-08-30 17:54:41,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:41,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758422020] [2021-08-30 17:54:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:41,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:41,729 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) [2021-08-30 17:54:41,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:54:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:41,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:54:41,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:42,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:42,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758422020] [2021-08-30 17:54:42,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758422020] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:42,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:42,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:54:42,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501720391] [2021-08-30 17:54:42,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:42,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:42,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:42,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:42,030 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:42,170 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-08-30 17:54:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:42,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 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 24 [2021-08-30 17:54:42,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:42,171 INFO L225 Difference]: With dead ends: 71 [2021-08-30 17:54:42,171 INFO L226 Difference]: Without dead ends: 67 [2021-08-30 17:54:42,172 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.90ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:42,172 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.71ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:42,173 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 189 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 133.71ms Time] [2021-08-30 17:54:42,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-30 17:54:42,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-08-30 17:54:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.325) internal successors, (53), 50 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:54:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-08-30 17:54:42,176 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 24 [2021-08-30 17:54:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:42,177 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-08-30 17:54:42,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-08-30 17:54:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:54:42,177 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:42,178 INFO L513 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] [2021-08-30 17:54:42,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:42,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:42,378 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe2_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash 783543578, now seen corresponding path program 1 times [2021-08-30 17:54:42,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:42,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825207202] [2021-08-30 17:54:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:42,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:42,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:42,381 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) [2021-08-30 17:54:42,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:54:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:42,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:54:42,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:42,538 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:42,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:42,680 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:54:42,680 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 17 treesize of output 22 [2021-08-30 17:54:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:42,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:42,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:42,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825207202] [2021-08-30 17:54:42,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825207202] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:42,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:42,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-08-30 17:54:42,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545139586] [2021-08-30 17:54:42,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 17:54:42,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 17:54:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:54:42,996 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:54:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:43,220 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-08-30 17:54:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:54:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-08-30 17:54:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:43,221 INFO L225 Difference]: With dead ends: 66 [2021-08-30 17:54:43,221 INFO L226 Difference]: Without dead ends: 66 [2021-08-30 17:54:43,221 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 189.85ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:54:43,222 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 155.23ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:43,222 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 29 Invalid, 288 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [11 Valid, 191 Invalid, 0 Unknown, 86 Unchecked, 155.23ms Time] [2021-08-30 17:54:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-30 17:54:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-08-30 17:54:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 40 states have (on average 1.3) internal successors, (52), 49 states have internal predecessors, (52), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:54:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-08-30 17:54:43,226 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 28 [2021-08-30 17:54:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:43,226 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-08-30 17:54:43,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:54:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-08-30 17:54:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:54:43,227 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:43,227 INFO L513 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] [2021-08-30 17:54:43,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:43,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:43,433 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe2_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash 783543579, now seen corresponding path program 1 times [2021-08-30 17:54:43,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:43,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250921555] [2021-08-30 17:54:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:43,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:43,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:43,435 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) [2021-08-30 17:54:43,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:54:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:43,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 17:54:43,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:43,585 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:43,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:54:47,759 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:54:47,760 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 12 treesize of output 14 [2021-08-30 17:54:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:47,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:49,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:49,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250921555] [2021-08-30 17:54:49,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250921555] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:49,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:49,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-08-30 17:54:49,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74348450] [2021-08-30 17:54:49,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:54:49,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:49,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:54:49,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-08-30 17:54:49,258 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-30 17:54:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:49,472 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-08-30 17:54:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:54:49,473 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-08-30 17:54:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:49,474 INFO L225 Difference]: With dead ends: 65 [2021-08-30 17:54:49,474 INFO L226 Difference]: Without dead ends: 65 [2021-08-30 17:54:49,474 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4986.14ms TimeCoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2021-08-30 17:54:49,475 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 167.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 187.85ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:49,475 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 317 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 202 Unchecked, 187.85ms Time] [2021-08-30 17:54:49,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-08-30 17:54:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-08-30 17:54:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.275) internal successors, (51), 48 states have internal predecessors, (51), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:54:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-08-30 17:54:49,477 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 28 [2021-08-30 17:54:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:49,478 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-08-30 17:54:49,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-30 17:54:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-08-30 17:54:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:54:49,479 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:49,479 INFO L513 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] [2021-08-30 17:54:49,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:49,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:49,688 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:49,688 INFO L82 PathProgramCache]: Analyzing trace with hash 558976829, now seen corresponding path program 1 times [2021-08-30 17:54:49,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:49,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633227055] [2021-08-30 17:54:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:49,689 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:49,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:49,690 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) [2021-08-30 17:54:49,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:54:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:49,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:54:49,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:49,821 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:49,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:54:49,871 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 5 treesize of output 3 [2021-08-30 17:54:54,066 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 [2021-08-30 17:54:54,214 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:54:54,215 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 12 treesize of output 14 [2021-08-30 17:54:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:54,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:55,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:55,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633227055] [2021-08-30 17:54:55,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633227055] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:55,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:55,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-30 17:54:55,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280607133] [2021-08-30 17:54:55,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:54:55,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:54:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=121, Unknown=5, NotChecked=0, Total=182 [2021-08-30 17:54:55,734 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 6 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-30 17:54:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:55,830 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2021-08-30 17:54:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:54:55,830 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 6 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 29 [2021-08-30 17:54:55,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:55,831 INFO L225 Difference]: With dead ends: 69 [2021-08-30 17:54:55,831 INFO L226 Difference]: Without dead ends: 69 [2021-08-30 17:54:55,831 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 5007.10ms TimeCoverageRelationStatistics Valid=56, Invalid=121, Unknown=5, NotChecked=0, Total=182 [2021-08-30 17:54:55,832 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 88.85ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:55,832 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 21 Invalid, 214 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 169 Unchecked, 88.85ms Time] [2021-08-30 17:54:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-08-30 17:54:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2021-08-30 17:54:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 48 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:54:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-08-30 17:54:55,835 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 29 [2021-08-30 17:54:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:55,835 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-08-30 17:54:55,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 6 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-30 17:54:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-08-30 17:54:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:54:55,836 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:55,836 INFO L513 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] [2021-08-30 17:54:55,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:56,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:56,046 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:54:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:56,046 INFO L82 PathProgramCache]: Analyzing trace with hash 558976828, now seen corresponding path program 1 times [2021-08-30 17:54:56,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:56,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068979965] [2021-08-30 17:54:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:56,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:56,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:56,047 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) [2021-08-30 17:54:56,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 17:54:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:56,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:54:56,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:56,194 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:56,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:56,284 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 7 treesize of output 5 [2021-08-30 17:54:56,385 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 0 case distinctions, treesize of input 21 treesize of output 18 [2021-08-30 17:54:56,582 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-08-30 17:54:56,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 30 [2021-08-30 17:54:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:56,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:57,047 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 9 treesize of output 7 [2021-08-30 17:54:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:57,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:57,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068979965] [2021-08-30 17:54:57,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068979965] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:57,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:57,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-08-30 17:54:57,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387216153] [2021-08-30 17:54:57,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:54:57,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:54:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:54:57,212 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:55:03,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:55:03,699 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2021-08-30 17:55:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 17:55:03,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-08-30 17:55:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:55:03,701 INFO L225 Difference]: With dead ends: 67 [2021-08-30 17:55:03,701 INFO L226 Difference]: Without dead ends: 67 [2021-08-30 17:55:03,701 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 6439.56ms TimeCoverageRelationStatistics Valid=70, Invalid=233, Unknown=3, NotChecked=0, Total=306 [2021-08-30 17:55:03,702 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 320.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 352.32ms IncrementalHoareTripleChecker+Time [2021-08-30 17:55:03,703 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 15 Invalid, 344 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [16 Valid, 241 Invalid, 0 Unknown, 87 Unchecked, 352.32ms Time] [2021-08-30 17:55:03,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-30 17:55:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-08-30 17:55:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 48 states have internal predecessors, (52), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:55:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-08-30 17:55:03,706 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 29 [2021-08-30 17:55:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:55:03,717 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-08-30 17:55:03,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:55:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-08-30 17:55:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 17:55:03,722 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:55:03,722 INFO L513 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] [2021-08-30 17:55:03,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:03,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:55:03,922 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:55:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:55:03,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1441691226, now seen corresponding path program 1 times [2021-08-30 17:55:03,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:55:03,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804705878] [2021-08-30 17:55:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:03,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:55:03,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:55:03,924 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) [2021-08-30 17:55:03,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-30 17:55:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:04,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:55:04,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:04,065 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:55:04,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:55:04,149 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 5 treesize of output 3 [2021-08-30 17:55:08,366 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 [2021-08-30 17:55:08,450 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 [2021-08-30 17:55:08,563 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:55:08,564 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 12 treesize of output 14 [2021-08-30 17:55:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:08,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:09,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:55:09,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804705878] [2021-08-30 17:55:09,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804705878] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:55:09,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:55:09,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-30 17:55:09,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089173293] [2021-08-30 17:55:09,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:55:09,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:55:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:55:09,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=124, Unknown=3, NotChecked=0, Total=182 [2021-08-30 17:55:09,994 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 7 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2021-08-30 17:55:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:55:10,054 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-08-30 17:55:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:55:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 7 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Word has length 32 [2021-08-30 17:55:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:55:10,055 INFO L225 Difference]: With dead ends: 67 [2021-08-30 17:55:10,055 INFO L226 Difference]: Without dead ends: 67 [2021-08-30 17:55:10,055 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4956.05ms TimeCoverageRelationStatistics Valid=55, Invalid=124, Unknown=3, NotChecked=0, Total=182 [2021-08-30 17:55:10,056 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 55.95ms IncrementalHoareTripleChecker+Time [2021-08-30 17:55:10,056 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 175 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 139 Unchecked, 55.95ms Time] [2021-08-30 17:55:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-30 17:55:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2021-08-30 17:55:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 45 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:55:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-08-30 17:55:10,058 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 32 [2021-08-30 17:55:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:55:10,058 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-08-30 17:55:10,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 7 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2021-08-30 17:55:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-08-30 17:55:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 17:55:10,059 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:55:10,059 INFO L513 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] [2021-08-30 17:55:10,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:10,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:55:10,268 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-08-30 17:55:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:55:10,269 INFO L82 PathProgramCache]: Analyzing trace with hash 890846312, now seen corresponding path program 1 times [2021-08-30 17:55:10,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:55:10,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456151464] [2021-08-30 17:55:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:10,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:55:10,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:55:10,270 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) [2021-08-30 17:55:10,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-30 17:55:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:10,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:55:10,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:10,471 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:55:10,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:55:11,080 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 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:55:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:17,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:21,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:55:21,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456151464] [2021-08-30 17:55:21,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:21,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [686763447] [2021-08-30 17:55:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:21,897 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:55:21,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:55:21,899 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:55:21,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-08-30 17:55:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:22,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-30 17:55:22,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:22,128 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:55:22,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 38 [2021-08-30 17:55:22,652 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 0 case distinctions, treesize of input 21 treesize of output 18 [2021-08-30 17:55:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:23,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:27,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:27,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592124810] [2021-08-30 17:55:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:27,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:55:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:55:27,313 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:55:27,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-30 17:55:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:55:27,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:27,497 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 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:55:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:27,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:32,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:32,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:55:32,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:55:32,089 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:55:32,089 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:55:32,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (82 of 83 remaining) [2021-08-30 17:55:32,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION (81 of 83 remaining) [2021-08-30 17:55:32,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION (80 of 83 remaining) [2021-08-30 17:55:32,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION (79 of 83 remaining) [2021-08-30 17:55:32,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION (78 of 83 remaining) [2021-08-30 17:55:32,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION (77 of 83 remaining) [2021-08-30 17:55:32,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION (76 of 83 remaining) [2021-08-30 17:55:32,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION (75 of 83 remaining) [2021-08-30 17:55:32,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION (74 of 83 remaining) [2021-08-30 17:55:32,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (73 of 83 remaining) [2021-08-30 17:55:32,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (72 of 83 remaining) [2021-08-30 17:55:32,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (71 of 83 remaining) [2021-08-30 17:55:32,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (70 of 83 remaining) [2021-08-30 17:55:32,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (69 of 83 remaining) [2021-08-30 17:55:32,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (68 of 83 remaining) [2021-08-30 17:55:32,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (67 of 83 remaining) [2021-08-30 17:55:32,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (66 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (65 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (64 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (63 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (62 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION (61 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION (60 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION (59 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION (58 of 83 remaining) [2021-08-30 17:55:32,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION (57 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION (56 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION (55 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION (54 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION (53 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION (52 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (51 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (50 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION (49 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION (48 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION (47 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION (46 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION (45 of 83 remaining) [2021-08-30 17:55:32,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION (44 of 83 remaining) [2021-08-30 17:55:32,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION (43 of 83 remaining) [2021-08-30 17:55:32,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION (42 of 83 remaining) [2021-08-30 17:55:32,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION (41 of 83 remaining) [2021-08-30 17:55:32,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION (40 of 83 remaining) [2021-08-30 17:55:32,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (39 of 83 remaining) [2021-08-30 17:55:32,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE (38 of 83 remaining) [2021-08-30 17:55:32,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 83 remaining) [2021-08-30 17:55:32,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE (36 of 83 remaining) [2021-08-30 17:55:32,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE (35 of 83 remaining) [2021-08-30 17:55:32,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE (34 of 83 remaining) [2021-08-30 17:55:32,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION (33 of 83 remaining) [2021-08-30 17:55:32,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION (32 of 83 remaining) [2021-08-30 17:55:32,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION (31 of 83 remaining) [2021-08-30 17:55:32,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION (30 of 83 remaining) [2021-08-30 17:55:32,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION (29 of 83 remaining) [2021-08-30 17:55:32,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION (28 of 83 remaining) [2021-08-30 17:55:32,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION (27 of 83 remaining) [2021-08-30 17:55:32,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION (26 of 83 remaining) [2021-08-30 17:55:32,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE (25 of 83 remaining) [2021-08-30 17:55:32,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE (24 of 83 remaining) [2021-08-30 17:55:32,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE (23 of 83 remaining) [2021-08-30 17:55:32,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE (22 of 83 remaining) [2021-08-30 17:55:32,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE (21 of 83 remaining) [2021-08-30 17:55:32,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE (20 of 83 remaining) [2021-08-30 17:55:32,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err0REQUIRES_VIOLATION (19 of 83 remaining) [2021-08-30 17:55:32,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err1REQUIRES_VIOLATION (18 of 83 remaining) [2021-08-30 17:55:32,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE (17 of 83 remaining) [2021-08-30 17:55:32,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE (16 of 83 remaining) [2021-08-30 17:55:32,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE (15 of 83 remaining) [2021-08-30 17:55:32,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION (14 of 83 remaining) [2021-08-30 17:55:32,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION (13 of 83 remaining) [2021-08-30 17:55:32,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (12 of 83 remaining) [2021-08-30 17:55:32,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (11 of 83 remaining) [2021-08-30 17:55:32,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (10 of 83 remaining) [2021-08-30 17:55:32,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (9 of 83 remaining) [2021-08-30 17:55:32,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION (8 of 83 remaining) [2021-08-30 17:55:32,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION (7 of 83 remaining) [2021-08-30 17:55:32,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION (6 of 83 remaining) [2021-08-30 17:55:32,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION (5 of 83 remaining) [2021-08-30 17:55:32,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION (4 of 83 remaining) [2021-08-30 17:55:32,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION (3 of 83 remaining) [2021-08-30 17:55:32,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE (2 of 83 remaining) [2021-08-30 17:55:32,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE (1 of 83 remaining) [2021-08-30 17:55:32,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE (0 of 83 remaining) [2021-08-30 17:55:32,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:32,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-08-30 17:55:32,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-08-30 17:55:32,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:55:32,721 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:55:32,723 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:55:32,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:55:32 BoogieIcfgContainer [2021-08-30 17:55:32,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:55:32,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:55:32,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:55:32,730 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:55:32,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:35" (3/4) ... [2021-08-30 17:55:32,732 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:55:32,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:55:32,733 INFO L158 Benchmark]: Toolchain (without parser) took 58662.03ms. Allocated memory was 60.8MB in the beginning and 96.5MB in the end (delta: 35.7MB). Free memory was 38.1MB in the beginning and 65.3MB in the end (delta: -27.2MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-08-30 17:55:32,733 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:55:32,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.95ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 37.8MB in the beginning and 60.7MB in the end (delta: -22.8MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-08-30 17:55:32,734 INFO L158 Benchmark]: Boogie Preprocessor took 111.01ms. Allocated memory is still 79.7MB. Free memory was 60.7MB in the beginning and 55.9MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:55:32,734 INFO L158 Benchmark]: RCFGBuilder took 743.01ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 39.6MB in the end (delta: 16.2MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2021-08-30 17:55:32,734 INFO L158 Benchmark]: TraceAbstraction took 57250.96ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 38.9MB in the beginning and 65.8MB in the end (delta: -26.9MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2021-08-30 17:55:32,735 INFO L158 Benchmark]: Witness Printer took 3.20ms. Allocated memory is still 96.5MB. Free memory was 65.8MB in the beginning and 65.3MB in the end (delta: 499.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:55:32,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.95ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 37.8MB in the beginning and 60.7MB in the end (delta: -22.8MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 111.01ms. Allocated memory is still 79.7MB. Free memory was 60.7MB in the beginning and 55.9MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 743.01ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 39.6MB in the end (delta: 16.2MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * TraceAbstraction took 57250.96ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 38.9MB in the beginning and 65.8MB in the end (delta: -26.9MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * Witness Printer took 3.20ms. Allocated memory is still 96.5MB. Free memory was 65.8MB in the beginning and 65.3MB in the end (delta: 499.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; [L792] CALL entry_point() [L785] CALL, EXPR probe2_6(&a6) [L764] int ret = - -3; [L765] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND TRUE ret<0 [L777] free(p) [L777] free(p) [L777] free(p) [L778] return ret; [L785] RET, EXPR probe2_6(&a6) [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) [L789] a6.p = 0 [L792] RET entry_point() - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 374 locations, 83 error locations. Started 1 CEGAR loops. OverallTime: 57189.50ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 22.40ms, AutomataDifference: 8864.23ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.06ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 557 SdHoareTripleChecker+Valid, 2386.91ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 544 mSDsluCounter, 534 SdHoareTripleChecker+Invalid, 2010.14ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 797 IncrementalHoareTripleChecker+Unchecked, 1879 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2309 IncrementalHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 184 mSDtfsCounter, 2309 mSolverCounterSat, 25.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 646 GetRequests, 503 SyntacticMatches, 37 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 21867.95ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 95.76ms AutomataMinimizationTime, 13 MinimizatonAttempts, 72 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 120.38ms SsaConstructionTime, 301.20ms SatisfiabilityAnalysisTime, 21311.44ms InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 616 ConstructedInterpolants, 120 QuantifiedInterpolants, 4952 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1440 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:55:32,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...