./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX --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 b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:48:01,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:48:01,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:48:01,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:48:01,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:48:01,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:48:01,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:48:01,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:48:01,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:48:01,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:48:01,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:48:01,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:48:01,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:48:01,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:48:01,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:48:01,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:48:01,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:48:01,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:48:01,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:48:01,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:48:01,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:48:01,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:48:01,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:48:01,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:48:01,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:48:01,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:48:01,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:48:01,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:48:01,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:48:01,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:48:01,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:48:01,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:48:01,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:48:01,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:48:01,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:48:01,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:48:01,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:48:01,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:48:01,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:48:01,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:48:01,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:48:01,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 10:48:01,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:48:01,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:48:01,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:48:01,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:48:01,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:48:01,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:48:01,772 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:48:01,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:48:01,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:48:01,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:48:01,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:48:01,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:48:01,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:48:01,776 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:48:01,776 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:48:01,776 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:48:01,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:48:01,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:48:01,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:48:01,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:48:01,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:48:01,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:48:01,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:48:01,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:48:01,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:48:01,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:48:01,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:48:01,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:48:01,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:48:01,782 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2021-11-09 10:48:02,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:48:02,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:48:02,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:48:02,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:48:02,220 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:48:02,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-11-09 10:48:02,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data/ba6c787cb/1b2ba48076074fc8901cfa3fd4d36584/FLAG2d4bde403 [2021-11-09 10:48:03,044 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:48:03,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-11-09 10:48:03,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data/ba6c787cb/1b2ba48076074fc8901cfa3fd4d36584/FLAG2d4bde403 [2021-11-09 10:48:03,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data/ba6c787cb/1b2ba48076074fc8901cfa3fd4d36584 [2021-11-09 10:48:03,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:48:03,249 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:48:03,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:48:03,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:48:03,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:48:03,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:03" (1/1) ... [2021-11-09 10:48:03,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57692128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:03, skipping insertion in model container [2021-11-09 10:48:03,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:03" (1/1) ... [2021-11-09 10:48:03,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:48:03,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:48:03,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:48:03,973 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) [2021-11-09 10:48:03,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@539787a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:03, skipping insertion in model container [2021-11-09 10:48:03,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:48:03,976 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 10:48:03,981 INFO L168 Benchmark]: Toolchain (without parser) took 728.65 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 45.0 MB in the beginning and 92.8 MB in the end (delta: -47.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:48:03,984 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 55.5 MB in the beginning and 55.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:48:03,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.06 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 44.8 MB in the beginning and 92.8 MB in the end (delta: -48.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:48:03,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 55.5 MB in the beginning and 55.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 712.06 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 44.8 MB in the beginning and 92.8 MB in the end (delta: -48.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX --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 b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:48:06,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:48:06,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:48:06,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:48:06,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:48:06,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:48:06,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:48:06,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:48:06,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:48:06,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:48:06,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:48:06,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:48:06,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:48:06,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:48:06,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:48:06,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:48:06,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:48:06,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:48:06,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:48:06,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:48:06,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:48:06,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:48:06,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:48:06,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:48:06,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:48:06,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:48:06,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:48:06,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:48:06,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:48:06,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:48:06,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:48:06,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:48:06,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:48:06,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:48:06,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:48:06,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:48:06,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:48:06,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:48:06,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:48:06,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:48:06,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:48:06,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 10:48:06,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:48:06,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:48:06,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:48:06,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:48:06,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:48:06,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:48:06,656 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:48:06,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:48:06,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:48:06,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:48:06,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:48:06,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:48:06,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:48:06,658 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:48:06,658 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:48:06,658 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:48:06,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:48:06,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:48:06,659 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:48:06,659 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:48:06,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:48:06,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:48:06,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:48:06,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:48:06,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:48:06,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:48:06,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:48:06,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:48:06,661 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:48:06,661 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:48:06,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:48:06,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:48:06,662 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2021-11-09 10:48:07,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:48:07,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:48:07,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:48:07,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:48:07,094 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:48:07,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-11-09 10:48:07,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data/dbec3ae3e/9c31d705c2764a6c9cc6be3e2f9f36e0/FLAGdfcfcff2e [2021-11-09 10:48:07,830 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:48:07,831 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-11-09 10:48:07,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data/dbec3ae3e/9c31d705c2764a6c9cc6be3e2f9f36e0/FLAGdfcfcff2e [2021-11-09 10:48:08,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/data/dbec3ae3e/9c31d705c2764a6c9cc6be3e2f9f36e0 [2021-11-09 10:48:08,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:48:08,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:48:08,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:48:08,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:48:08,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:48:08,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:08" (1/1) ... [2021-11-09 10:48:08,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7910b111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:08, skipping insertion in model container [2021-11-09 10:48:08,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:08" (1/1) ... [2021-11-09 10:48:08,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:48:08,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:48:08,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:48:08,817 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 10:48:08,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:48:08,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:48:08,971 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:48:09,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:48:09,181 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:48:09,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09 WrapperNode [2021-11-09 10:48:09,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:48:09,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:48:09,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:48:09,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:48:09,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2021-11-09 10:48:09,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2021-11-09 10:48:09,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2021-11-09 10:48:09,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2021-11-09 10:48:09,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2021-11-09 10:48:09,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2021-11-09 10:48:09,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2021-11-09 10:48:09,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:48:09,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:48:09,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:48:09,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:48:09,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2021-11-09 10:48:09,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:48:09,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:09,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:48:09,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:48:09,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 10:48:09,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:48:09,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-09 10:48:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:48:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 10:48:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 10:48:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 10:48:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 10:48:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 10:48:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-11-09 10:48:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-11-09 10:48:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-09 10:48:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-09 10:48:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-09 10:48:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-09 10:48:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-11-09 10:48:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-09 10:48:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-11-09 10:48:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-09 10:48:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-11-09 10:48:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-11-09 10:48:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-11-09 10:48:09,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-11-09 10:48:09,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-11-09 10:48:09,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-09 10:48:09,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-09 10:48:09,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-11-09 10:48:09,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-11-09 10:48:09,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-11-09 10:48:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-11-09 10:48:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-11-09 10:48:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-11-09 10:48:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-11-09 10:48:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-11-09 10:48:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-11-09 10:48:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-11-09 10:48:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-11-09 10:48:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-11-09 10:48:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-11-09 10:48:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-11-09 10:48:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-09 10:48:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-09 10:48:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2021-11-09 10:48:09,555 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2021-11-09 10:48:09,555 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-11-09 10:48:09,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 10:48:09,556 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 10:48:09,557 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-09 10:48:09,557 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-09 10:48:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 10:48:09,558 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 10:48:09,558 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 10:48:09,558 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 10:48:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 10:48:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 10:48:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 10:48:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 10:48:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 10:48:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 10:48:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 10:48:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 10:48:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 10:48:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 10:48:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 10:48:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 10:48:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 10:48:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 10:48:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 10:48:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 10:48:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 10:48:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 10:48:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 10:48:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 10:48:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 10:48:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 10:48:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 10:48:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 10:48:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 10:48:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 10:48:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 10:48:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 10:48:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 10:48:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 10:48:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 10:48:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 10:48:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 10:48:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 10:48:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 10:48:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 10:48:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 10:48:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 10:48:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 10:48:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 10:48:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 10:48:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 10:48:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 10:48:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 10:48:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 10:48:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 10:48:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 10:48:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 10:48:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 10:48:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 10:48:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 10:48:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 10:48:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 10:48:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 10:48:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 10:48:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 10:48:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 10:48:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 10:48:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 10:48:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 10:48:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 10:48:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 10:48:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 10:48:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 10:48:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 10:48:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 10:48:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 10:48:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 10:48:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 10:48:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 10:48:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 10:48:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 10:48:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 10:48:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 10:48:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 10:48:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 10:48:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 10:48:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 10:48:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 10:48:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 10:48:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 10:48:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 10:48:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 10:48:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 10:48:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 10:48:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 10:48:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 10:48:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 10:48:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 10:48:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 10:48:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 10:48:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 10:48:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 10:48:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 10:48:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 10:48:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-09 10:48:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 10:48:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-11-09 10:48:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-11-09 10:48:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 10:48:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 10:48:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-09 10:48:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:48:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-09 10:48:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-09 10:48:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-09 10:48:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:48:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-09 10:48:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-11-09 10:48:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-09 10:48:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:48:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-11-09 10:48:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-09 10:48:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-11-09 10:48:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-11-09 10:48:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-09 10:48:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-11-09 10:48:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:48:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-11-09 10:48:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-11-09 10:48:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-09 10:48:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-09 10:48:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-11-09 10:48:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 10:48:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 10:48:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-11-09 10:48:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-11-09 10:48:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-09 10:48:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-11-09 10:48:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-11-09 10:48:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-11-09 10:48:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-11-09 10:48:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-11-09 10:48:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-11-09 10:48:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-11-09 10:48:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-11-09 10:48:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-11-09 10:48:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-11-09 10:48:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-11-09 10:48:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 10:48:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-09 10:48:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-09 10:48:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2021-11-09 10:48:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2021-11-09 10:48:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-11-09 10:48:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 10:48:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 10:48:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:48:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 10:48:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:48:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:48:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-09 10:48:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-09 10:48:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-09 10:48:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-09 10:48:10,383 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 10:48:10,816 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 10:48:11,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:48:11,413 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-09 10:48:11,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:11 BoogieIcfgContainer [2021-11-09 10:48:11,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:48:11,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:48:11,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:48:11,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:48:11,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:48:08" (1/3) ... [2021-11-09 10:48:11,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce0c62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:11, skipping insertion in model container [2021-11-09 10:48:11,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (2/3) ... [2021-11-09 10:48:11,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce0c62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:11, skipping insertion in model container [2021-11-09 10:48:11,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:11" (3/3) ... [2021-11-09 10:48:11,428 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-1.i [2021-11-09 10:48:11,435 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:48:11,435 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-09 10:48:11,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:48:11,507 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, mAutomataTypeConcurrency=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 [2021-11-09 10:48:11,507 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-09 10:48:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 80 states have (on average 1.625) internal successors, (130), 115 states have internal predecessors, (130), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-09 10:48:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 10:48:11,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:11,541 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:11,542 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 83 more)] === [2021-11-09 10:48:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:11,550 INFO L85 PathProgramCache]: Analyzing trace with hash -200276895, now seen corresponding path program 1 times [2021-11-09 10:48:11,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:11,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101354180] [2021-11-09 10:48:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:11,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:11,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:11,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:11,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:48:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:11,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:48:11,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:12,054 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 [2021-11-09 10:48:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:12,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:13,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:13,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101354180] [2021-11-09 10:48:13,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101354180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:13,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:13,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-09 10:48:13,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333321349] [2021-11-09 10:48:13,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 10:48:13,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:13,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 10:48:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:48:13,235 INFO L87 Difference]: Start difference. First operand has 141 states, 80 states have (on average 1.625) internal successors, (130), 115 states have internal predecessors, (130), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:48:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:14,448 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-11-09 10:48:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 10:48:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2021-11-09 10:48:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:14,460 INFO L225 Difference]: With dead ends: 91 [2021-11-09 10:48:14,460 INFO L226 Difference]: Without dead ends: 88 [2021-11-09 10:48:14,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-11-09 10:48:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-09 10:48:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2021-11-09 10:48:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 47 states have (on average 1.574468085106383) internal successors, (74), 64 states have internal predecessors, (74), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-09 10:48:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-11-09 10:48:14,507 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 16 [2021-11-09 10:48:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:14,508 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-11-09 10:48:14,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:48:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-11-09 10:48:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 10:48:14,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:14,510 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:14,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:14,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:14,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash -200276896, now seen corresponding path program 1 times [2021-11-09 10:48:14,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:14,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275335412] [2021-11-09 10:48:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:14,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:14,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:14,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:14,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 10:48:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:14,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:48:14,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:14,990 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 [2021-11-09 10:48:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:15,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:15,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:15,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275335412] [2021-11-09 10:48:15,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275335412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:15,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:15,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 10:48:15,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513261264] [2021-11-09 10:48:15,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:48:15,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:15,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:48:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:15,182 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 10:48:15,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:15,422 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-11-09 10:48:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:48:15,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-09 10:48:15,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:15,426 INFO L225 Difference]: With dead ends: 83 [2021-11-09 10:48:15,426 INFO L226 Difference]: Without dead ends: 83 [2021-11-09 10:48:15,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-09 10:48:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2021-11-09 10:48:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 66 states have internal predecessors, (76), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-09 10:48:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2021-11-09 10:48:15,454 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 16 [2021-11-09 10:48:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:15,455 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2021-11-09 10:48:15,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 10:48:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2021-11-09 10:48:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 10:48:15,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:15,457 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:15,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:15,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:15,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash 687226786, now seen corresponding path program 1 times [2021-11-09 10:48:15,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:15,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320246830] [2021-11-09 10:48:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:15,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:15,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:15,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:15,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 10:48:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:15,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:48:15,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:16,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:16,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:16,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320246830] [2021-11-09 10:48:16,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320246830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:16,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:16,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 10:48:16,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212342536] [2021-11-09 10:48:16,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:48:16,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:48:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:16,176 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 10:48:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:16,228 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2021-11-09 10:48:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:48:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-09 10:48:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:16,234 INFO L225 Difference]: With dead ends: 78 [2021-11-09 10:48:16,234 INFO L226 Difference]: Without dead ends: 78 [2021-11-09 10:48:16,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-09 10:48:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-11-09 10:48:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 63 states have internal predecessors, (70), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-09 10:48:16,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2021-11-09 10:48:16,245 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 16 [2021-11-09 10:48:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:16,246 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2021-11-09 10:48:16,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 10:48:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2021-11-09 10:48:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 10:48:16,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:16,247 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:16,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:16,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:16,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:16,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1913632700, now seen corresponding path program 1 times [2021-11-09 10:48:16,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:16,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599829465] [2021-11-09 10:48:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:16,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:16,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:16,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 10:48:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:16,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:48:16,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:16,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:16,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:16,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599829465] [2021-11-09 10:48:16,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599829465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:16,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:16,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 10:48:16,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164203561] [2021-11-09 10:48:16,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:48:16,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:48:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:16,883 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:48:16,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:16,928 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2021-11-09 10:48:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:48:16,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-11-09 10:48:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:16,934 INFO L225 Difference]: With dead ends: 78 [2021-11-09 10:48:16,934 INFO L226 Difference]: Without dead ends: 78 [2021-11-09 10:48:16,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-09 10:48:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-11-09 10:48:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 63 states have internal predecessors, (69), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-09 10:48:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2021-11-09 10:48:16,944 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 17 [2021-11-09 10:48:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:16,945 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2021-11-09 10:48:16,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:48:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2021-11-09 10:48:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 10:48:16,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:16,947 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:16,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:17,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:17,162 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:17,162 INFO L85 PathProgramCache]: Analyzing trace with hash -170822365, now seen corresponding path program 1 times [2021-11-09 10:48:17,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:17,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967594922] [2021-11-09 10:48:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:17,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:17,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:17,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:17,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 10:48:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:17,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:48:17,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:17,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:17,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:17,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967594922] [2021-11-09 10:48:17,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967594922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:17,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:17,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:48:17,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760128618] [2021-11-09 10:48:17,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:48:17,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:48:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:48:17,603 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 10:48:17,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:17,764 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2021-11-09 10:48:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:48:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-11-09 10:48:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:17,766 INFO L225 Difference]: With dead ends: 114 [2021-11-09 10:48:17,766 INFO L226 Difference]: Without dead ends: 109 [2021-11-09 10:48:17,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:48:17,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-09 10:48:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 74. [2021-11-09 10:48:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.488888888888889) internal successors, (67), 61 states have internal predecessors, (67), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-09 10:48:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-11-09 10:48:17,777 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 17 [2021-11-09 10:48:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:17,778 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-11-09 10:48:17,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 10:48:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-11-09 10:48:17,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 10:48:17,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:17,780 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:17,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:17,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:17,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash -73256383, now seen corresponding path program 1 times [2021-11-09 10:48:17,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:17,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519840686] [2021-11-09 10:48:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:17,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:17,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:17,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:17,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 10:48:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:18,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:48:18,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:18,282 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 [2021-11-09 10:48:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:18,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:20,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:20,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519840686] [2021-11-09 10:48:20,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519840686] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:48:20,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:20,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-09 10:48:20,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002713930] [2021-11-09 10:48:20,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 10:48:20,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 10:48:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:48:20,212 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:48:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:22,016 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-11-09 10:48:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:48:22,018 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2021-11-09 10:48:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:22,019 INFO L225 Difference]: With dead ends: 91 [2021-11-09 10:48:22,019 INFO L226 Difference]: Without dead ends: 91 [2021-11-09 10:48:22,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2021-11-09 10:48:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-09 10:48:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-11-09 10:48:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 73 states have internal predecessors, (81), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-09 10:48:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-11-09 10:48:22,030 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 22 [2021-11-09 10:48:22,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:22,030 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-11-09 10:48:22,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:48:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-11-09 10:48:22,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-09 10:48:22,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:22,033 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-09 10:48:22,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:22,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:22,252 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:22,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:22,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1067902475, now seen corresponding path program 1 times [2021-11-09 10:48:22,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:22,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132759047] [2021-11-09 10:48:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:22,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:22,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:22,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:22,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 10:48:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:22,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:48:22,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:22,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:22,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:22,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132759047] [2021-11-09 10:48:22,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132759047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:48:22,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:22,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-09 10:48:22,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427173378] [2021-11-09 10:48:22,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 10:48:22,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 10:48:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-09 10:48:22,959 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 10:48:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:23,231 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2021-11-09 10:48:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:48:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2021-11-09 10:48:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:23,234 INFO L225 Difference]: With dead ends: 92 [2021-11-09 10:48:23,234 INFO L226 Difference]: Without dead ends: 92 [2021-11-09 10:48:23,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:48:23,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-09 10:48:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2021-11-09 10:48:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 78 states have internal predecessors, (84), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-09 10:48:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2021-11-09 10:48:23,243 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 35 [2021-11-09 10:48:23,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:23,244 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2021-11-09 10:48:23,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 10:48:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2021-11-09 10:48:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-09 10:48:23,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:23,246 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:23,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:23,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:23,456 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:23,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1190057473, now seen corresponding path program 2 times [2021-11-09 10:48:23,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:23,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466968934] [2021-11-09 10:48:23,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:48:23,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:23,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:23,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:23,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 10:48:23,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:48:23,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:23,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 10:48:23,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:23,753 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 [2021-11-09 10:48:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:24,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:27,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:27,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466968934] [2021-11-09 10:48:27,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466968934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:48:27,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:27,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-09 10:48:27,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99617118] [2021-11-09 10:48:27,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 10:48:27,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:27,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 10:48:27,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-11-09 10:48:27,909 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:48:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:33,961 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2021-11-09 10:48:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 10:48:33,963 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-11-09 10:48:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:33,965 INFO L225 Difference]: With dead ends: 112 [2021-11-09 10:48:33,965 INFO L226 Difference]: Without dead ends: 112 [2021-11-09 10:48:33,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2021-11-09 10:48:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-09 10:48:33,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-11-09 10:48:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 97 states have internal predecessors, (108), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-09 10:48:33,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-11-09 10:48:33,976 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 34 [2021-11-09 10:48:33,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:33,976 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-11-09 10:48:33,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:48:33,977 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-11-09 10:48:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 10:48:33,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:33,979 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-09 10:48:34,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:34,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:34,192 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:34,193 INFO L85 PathProgramCache]: Analyzing trace with hash -321692208, now seen corresponding path program 2 times [2021-11-09 10:48:34,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:34,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509387172] [2021-11-09 10:48:34,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:48:34,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:34,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:34,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:34,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 10:48:34,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:48:34,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:34,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:48:34,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-09 10:48:34,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-09 10:48:35,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:35,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509387172] [2021-11-09 10:48:35,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509387172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:35,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:35,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-09 10:48:35,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621529417] [2021-11-09 10:48:35,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:48:35,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:48:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:48:35,015 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:48:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:35,138 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-11-09 10:48:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:48:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2021-11-09 10:48:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:35,146 INFO L225 Difference]: With dead ends: 141 [2021-11-09 10:48:35,146 INFO L226 Difference]: Without dead ends: 138 [2021-11-09 10:48:35,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:48:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-09 10:48:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 111. [2021-11-09 10:48:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 82 states have (on average 1.329268292682927) internal successors, (109), 98 states have internal predecessors, (109), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-09 10:48:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2021-11-09 10:48:35,160 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 50 [2021-11-09 10:48:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:35,161 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2021-11-09 10:48:35,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:48:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2021-11-09 10:48:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 10:48:35,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:35,164 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:35,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:35,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:35,382 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:35,383 INFO L85 PathProgramCache]: Analyzing trace with hash 115614506, now seen corresponding path program 1 times [2021-11-09 10:48:35,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:35,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500767227] [2021-11-09 10:48:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:35,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:35,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:35,385 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 10:48:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:35,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:48:35,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:36,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 10:48:36,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:36,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500767227] [2021-11-09 10:48:36,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500767227] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:48:36,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:36,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-11-09 10:48:36,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450145520] [2021-11-09 10:48:36,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 10:48:36,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:36,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 10:48:36,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-11-09 10:48:36,806 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 10:48:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:37,367 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-11-09 10:48:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 10:48:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2021-11-09 10:48:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:37,370 INFO L225 Difference]: With dead ends: 111 [2021-11-09 10:48:37,370 INFO L226 Difference]: Without dead ends: 111 [2021-11-09 10:48:37,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-11-09 10:48:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-09 10:48:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-09 10:48:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 98 states have internal predecessors, (107), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-09 10:48:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-11-09 10:48:37,378 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 50 [2021-11-09 10:48:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:37,378 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-11-09 10:48:37,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 10:48:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-11-09 10:48:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:48:37,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:37,382 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:37,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:37,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:37,595 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:37,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1051535094, now seen corresponding path program 2 times [2021-11-09 10:48:37,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:37,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163644386] [2021-11-09 10:48:37,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:48:37,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:37,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:37,597 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:37,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 10:48:37,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:48:37,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:37,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:48:37,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:38,000 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 [2021-11-09 10:48:38,302 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-09 10:48:38,302 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 16 treesize of output 21 [2021-11-09 10:48:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 10:48:38,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:48:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 10:48:38,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:48:38,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163644386] [2021-11-09 10:48:38,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163644386] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:48:38,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:38,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-11-09 10:48:38,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543369965] [2021-11-09 10:48:38,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:48:38,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:48:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:48:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:48:38,759 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 10:48:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:39,713 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2021-11-09 10:48:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:48:39,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-11-09 10:48:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:39,716 INFO L225 Difference]: With dead ends: 198 [2021-11-09 10:48:39,717 INFO L226 Difference]: Without dead ends: 196 [2021-11-09 10:48:39,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:48:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-09 10:48:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 111. [2021-11-09 10:48:39,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 97 states have internal predecessors, (107), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-09 10:48:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-11-09 10:48:39,725 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 56 [2021-11-09 10:48:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:39,726 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-11-09 10:48:39,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 10:48:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-11-09 10:48:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:48:39,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:39,728 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:39,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:39,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:48:39,942 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:48:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1051535093, now seen corresponding path program 1 times [2021-11-09 10:48:39,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:48:39,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411307269] [2021-11-09 10:48:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:39,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:48:39,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:48:39,947 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:48:39,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 10:48:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:40,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 10:48:40,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:40,466 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 [2021-11-09 10:48:40,474 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 [2021-11-09 10:48:43,286 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:48:43,287 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 33 treesize of output 35 [2021-11-09 10:48:43,302 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:48:43,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2021-11-09 10:48:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 10:48:43,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:49:08,318 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 33 treesize of output 31 [2021-11-09 10:49:09,001 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 31 treesize of output 29 [2021-11-09 10:49:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 10:49:09,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:49:09,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411307269] [2021-11-09 10:49:09,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411307269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:49:09,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:49:09,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-09 10:49:09,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862048869] [2021-11-09 10:49:09,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 10:49:09,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:49:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 10:49:09,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=402, Unknown=7, NotChecked=0, Total=462 [2021-11-09 10:49:09,238 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-09 10:49:31,918 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| ldv_malloc_~size) |c_#length|) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |ldv_malloc_#res.base|)))))))) (= (select |c_#length| |c_ldv_malloc_#res.base|) |c_ldv_malloc_#in~size|) (= c_ldv_malloc_~size |c_ldv_malloc_#in~size|) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ldv_malloc_#res.base|))) (forall ((|v_ldv_malloc_#res.base_61| (_ BitVec 32)) (v_alloc_17_~array.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_alloc_17_~i~0_BEFORE_CALL_2 (_ BitVec 32)) (v_alloc_17_~array.base_BEFORE_CALL_4 (_ BitVec 32))) (or (and (let ((.cse0 (bvmul v_alloc_17_~i~0_BEFORE_CALL_2 (_ bv4 32)))) (bvule (bvadd v_alloc_17_~array.offset_BEFORE_CALL_2 .cse0) (bvadd (_ bv4 32) v_alloc_17_~array.offset_BEFORE_CALL_2 .cse0))) (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_alloc_17_~array.offset_BEFORE_CALL_2 (bvmul v_alloc_17_~i~0_BEFORE_CALL_2 (_ bv4 32))) (select (store |c_#length| |v_ldv_malloc_#res.base_61| ldv_malloc_~size) v_alloc_17_~array.base_BEFORE_CALL_4)))) (exists ((|v_ldv_malloc_#res.base_60| (_ BitVec 32))) (and (or (exists ((v_ldv_malloc_~size_55 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_alloc_17_~array.offset_BEFORE_CALL_2 (bvmul v_alloc_17_~i~0_BEFORE_CALL_2 (_ bv4 32))) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_60| v_ldv_malloc_~size_55) v_alloc_17_~array.base_BEFORE_CALL_4)))) (not (let ((.cse1 (bvmul v_alloc_17_~i~0_BEFORE_CALL_2 (_ bv4 32)))) (bvule (bvadd v_alloc_17_~array.offset_BEFORE_CALL_2 .cse1) (bvadd (_ bv4 32) v_alloc_17_~array.offset_BEFORE_CALL_2 .cse1))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_60|))))))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_61|))))))) (= |c_ldv_malloc_#res.offset| (_ bv0 32))) is different from false [2021-11-09 10:51:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:57,727 INFO L93 Difference]: Finished difference Result 281 states and 319 transitions. [2021-11-09 10:51:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 10:51:57,729 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2021-11-09 10:51:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:57,732 INFO L225 Difference]: With dead ends: 281 [2021-11-09 10:51:57,732 INFO L226 Difference]: Without dead ends: 281 [2021-11-09 10:51:57,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=189, Invalid=1207, Unknown=14, NotChecked=72, Total=1482 [2021-11-09 10:51:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-09 10:51:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 127. [2021-11-09 10:51:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 97 states have (on average 1.288659793814433) internal successors, (125), 110 states have internal predecessors, (125), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2021-11-09 10:51:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2021-11-09 10:51:57,743 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 56 [2021-11-09 10:51:57,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:57,744 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2021-11-09 10:51:57,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-09 10:51:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2021-11-09 10:51:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-09 10:51:57,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:57,747 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:57,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:57,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:57,961 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:51:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1207954601, now seen corresponding path program 1 times [2021-11-09 10:51:57,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:57,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873186182] [2021-11-09 10:51:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:57,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:57,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:57,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:57,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 10:51:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:58,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:51:58,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-09 10:51:58,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-09 10:51:58,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:58,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873186182] [2021-11-09 10:51:58,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873186182] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:51:58,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:51:58,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 10:51:58,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092265485] [2021-11-09 10:51:58,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:51:58,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:51:58,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:51:58,818 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:58,917 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2021-11-09 10:51:58,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:51:58,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-11-09 10:51:58,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:58,920 INFO L225 Difference]: With dead ends: 143 [2021-11-09 10:51:58,921 INFO L226 Difference]: Without dead ends: 143 [2021-11-09 10:51:58,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:51:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-09 10:51:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2021-11-09 10:51:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 101 states have (on average 1.2673267326732673) internal successors, (128), 112 states have internal predecessors, (128), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2021-11-09 10:51:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2021-11-09 10:51:58,929 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 58 [2021-11-09 10:51:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:58,930 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2021-11-09 10:51:58,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:51:58,930 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2021-11-09 10:51:58,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-09 10:51:58,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:58,932 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:58,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:59,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:59,148 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:51:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash 534855734, now seen corresponding path program 1 times [2021-11-09 10:51:59,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:59,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769253575] [2021-11-09 10:51:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:59,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:59,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:59,151 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:59,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 10:51:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:59,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:51:59,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-09 10:51:59,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-09 10:52:00,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:52:00,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769253575] [2021-11-09 10:52:00,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769253575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:52:00,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:52:00,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 10:52:00,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731788027] [2021-11-09 10:52:00,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:52:00,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:52:00,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:52:00,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:52:00,046 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-09 10:52:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:00,265 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2021-11-09 10:52:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:52:00,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2021-11-09 10:52:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:00,268 INFO L225 Difference]: With dead ends: 138 [2021-11-09 10:52:00,268 INFO L226 Difference]: Without dead ends: 138 [2021-11-09 10:52:00,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:52:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-09 10:52:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2021-11-09 10:52:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 114 states have internal predecessors, (130), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2021-11-09 10:52:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2021-11-09 10:52:00,281 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 58 [2021-11-09 10:52:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:00,282 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2021-11-09 10:52:00,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-09 10:52:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2021-11-09 10:52:00,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-09 10:52:00,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:00,285 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:52:00,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:00,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:00,501 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:52:00,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1546730881, now seen corresponding path program 3 times [2021-11-09 10:52:00,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:00,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956516592] [2021-11-09 10:52:00,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:52:00,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:00,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:00,503 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:00,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 10:52:01,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-09 10:52:01,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:52:01,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-09 10:52:01,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:01,268 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 [2021-11-09 10:52:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:52:02,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:52:18,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:52:18,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956516592] [2021-11-09 10:52:18,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956516592] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:52:18,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:52:18,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2021-11-09 10:52:18,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263469729] [2021-11-09 10:52:18,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-09 10:52:18,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:52:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-09 10:52:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1404, Unknown=0, NotChecked=0, Total=1806 [2021-11-09 10:52:18,787 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:52:27,242 WARN L207 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 181 [2021-11-09 10:52:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:30,900 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2021-11-09 10:52:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 10:52:30,902 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-11-09 10:52:30,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:30,903 INFO L225 Difference]: With dead ends: 119 [2021-11-09 10:52:30,904 INFO L226 Difference]: Without dead ends: 119 [2021-11-09 10:52:30,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2021-11-09 10:52:30,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-09 10:52:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-09 10:52:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 90 states have (on average 1.2333333333333334) internal successors, (111), 100 states have internal predecessors, (111), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2021-11-09 10:52:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-11-09 10:52:30,910 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 58 [2021-11-09 10:52:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:30,911 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-11-09 10:52:30,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 10:52:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-11-09 10:52:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 10:52:30,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:30,912 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:52:30,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:31,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:31,119 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-11-09 10:52:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash 926469409, now seen corresponding path program 1 times [2021-11-09 10:52:31,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:31,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324232208] [2021-11-09 10:52:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:31,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:31,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:31,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:31,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 10:52:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:31,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 10:52:31,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:31,741 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 [2021-11-09 10:52:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 10:52:32,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:32,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:52:32,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324232208] [2021-11-09 10:52:32,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_entry_point_~array~0.base_BEFORE_CALL_5] [2021-11-09 10:52:32,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [808658257] [2021-11-09 10:52:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:32,289 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-09 10:52:32,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/cvc4 [2021-11-09 10:52:32,290 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-09 10:52:32,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-09 10:52:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:33,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:52:33,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:33,542 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 [2021-11-09 10:52:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 10:52:33,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:34,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_entry_point_~array~0.base_BEFORE_CALL_5] [2021-11-09 10:52:34,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739830007] [2021-11-09 10:52:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:34,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:52:34,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:52:34,122 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:52:34,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 10:52:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:34,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 10:52:34,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:34,937 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 [2021-11-09 10:52:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 10:52:35,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:35,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_entry_point_~array~0.base_BEFORE_CALL_5] [2021-11-09 10:52:35,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:52:35,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-09 10:52:35,499 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-09 10:52:35,500 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-09 10:52:35,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err0REQUIRES_VIOLATION [2021-11-09 10:52:35,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-11-09 10:52:35,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-11-09 10:52:35,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-11-09 10:52:35,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-11-09 10:52:35,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,512 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-11-09 10:52:35,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-11-09 10:52:35,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-11-09 10:52:35,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-11-09 10:52:35,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-11-09 10:52:35,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-11-09 10:52:35,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-11-09 10:52:35,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-11-09 10:52:35,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-11-09 10:52:35,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-11-09 10:52:35,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-11-09 10:52:35,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-11-09 10:52:35,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-11-09 10:52:35,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-11-09 10:52:35,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err0REQUIRES_VIOLATION [2021-11-09 10:52:35,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err1REQUIRES_VIOLATION [2021-11-09 10:52:35,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err2REQUIRES_VIOLATION [2021-11-09 10:52:35,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err3REQUIRES_VIOLATION [2021-11-09 10:52:35,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err7REQUIRES_VIOLATION [2021-11-09 10:52:35,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err8REQUIRES_VIOLATION [2021-11-09 10:52:35,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 10:52:35,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-11-09 10:52:35,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-11-09 10:52:35,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-11-09 10:52:35,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-11-09 10:52:35,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-11-09 10:52:35,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-11-09 10:52:35,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err1REQUIRES_VIOLATION [2021-11-09 10:52:35,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,538 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,538 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:52:35,538 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-11-09 10:52:35,538 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-11-09 10:52:35,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:35,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:35,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:36,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d65e4b8-93f0-4835-af4e-d24edff8cf7e/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:36,149 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:52:36,152 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:52:36,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:52:36 BoogieIcfgContainer [2021-11-09 10:52:36,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:52:36,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:52:36,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:52:36,182 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:52:36,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:11" (3/4) ... [2021-11-09 10:52:36,190 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:52:36,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:52:36,192 INFO L168 Benchmark]: Toolchain (without parser) took 268087.29 ms. Allocated memory was 62.9 MB in the beginning and 100.7 MB in the end (delta: 37.7 MB). Free memory was 40.7 MB in the beginning and 50.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:52:36,192 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:52:36,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1078.17 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 40.5 MB in the beginning and 56.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:52:36,193 INFO L168 Benchmark]: Boogie Preprocessor took 216.36 ms. Allocated memory is still 77.6 MB. Free memory was 56.5 MB in the beginning and 51.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-09 10:52:36,194 INFO L168 Benchmark]: RCFGBuilder took 2015.34 ms. Allocated memory is still 77.6 MB. Free memory was 51.6 MB in the beginning and 46.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2021-11-09 10:52:36,195 INFO L168 Benchmark]: TraceAbstraction took 264760.66 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 45.7 MB in the beginning and 51.0 MB in the end (delta: -5.4 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. [2021-11-09 10:52:36,195 INFO L168 Benchmark]: Witness Printer took 9.11 ms. Allocated memory is still 100.7 MB. Free memory was 51.0 MB in the beginning and 50.7 MB in the end (delta: 330.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:52:36,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1078.17 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 40.5 MB in the beginning and 56.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 216.36 ms. Allocated memory is still 77.6 MB. Free memory was 56.5 MB in the beginning and 51.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2015.34 ms. Allocated memory is still 77.6 MB. Free memory was 51.6 MB in the beginning and 46.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 264760.66 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 45.7 MB in the beginning and 51.0 MB in the end (delta: -5.4 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. * Witness Printer took 9.11 ms. Allocated memory is still 100.7 MB. Free memory was 51.0 MB in the beginning and 50.7 MB in the end (delta: 330.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 780]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L795] CALL entry_point() [L784] int i; [L785] int len = 10; [L786] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L786] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L786] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L787] COND FALSE !(!array) [L788] i=0 [L788] COND TRUE i=0) [L775] return - -3; [L791] RET alloc_17(array, len) [L792] CALL free_17(array, len) [L778] int i; [L779] i=0 [L779] COND TRUE i