./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt --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 b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt --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 b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:23:24,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:23:24,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:23:24,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:23:24,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:23:24,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:23:24,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:23:24,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:23:24,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:23:24,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:23:24,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:23:24,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:23:24,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:23:24,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:23:24,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:23:24,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:23:24,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:23:24,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:23:24,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:23:24,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:23:24,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:23:24,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:23:24,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:23:24,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:23:24,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:23:24,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:23:24,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:23:24,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:23:24,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:23:24,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:23:24,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:23:24,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:23:24,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:23:24,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:23:24,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:23:24,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:23:24,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:23:24,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:23:24,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:23:24,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:23:24,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:23:24,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 01:23:24,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:23:24,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:23:24,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:23:24,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:23:24,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:23:24,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:23:24,744 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:23:24,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:23:24,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:23:24,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:23:24,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:23:24,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:23:24,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:23:24,747 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:23:24,747 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:23:24,747 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:23:24,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:23:24,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:23:24,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:23:24,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:23:24,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:23:24,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:23:24,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:23:24,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:23:24,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:23:24,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:23:24,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:23:24,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:23:24,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:23:24,752 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_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 [2021-10-13 01:23:25,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:23:25,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:23:25,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:23:25,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:23:25,084 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:23:25,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-13 01:23:25,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data/7f022c51f/4ad045859321447a8194b0d4923e10e0/FLAG803e589b7 [2021-10-13 01:23:25,775 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:23:25,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-13 01:23:25,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data/7f022c51f/4ad045859321447a8194b0d4923e10e0/FLAG803e589b7 [2021-10-13 01:23:26,028 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data/7f022c51f/4ad045859321447a8194b0d4923e10e0 [2021-10-13 01:23:26,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:23:26,032 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:23:26,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:23:26,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:23:26,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:23:26,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:23:26" (1/1) ... [2021-10-13 01:23:26,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783459cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:26, skipping insertion in model container [2021-10-13 01:23:26,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:23:26" (1/1) ... [2021-10-13 01:23:26,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:23:26,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:23:26,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:23:26,519 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) [2021-10-13 01:23:26,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1d928040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:26, skipping insertion in model container [2021-10-13 01:23:26,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:23:26,521 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 01:23:26,523 INFO L168 Benchmark]: Toolchain (without parser) took 489.93 ms. Allocated memory is still 107.0 MB. Free memory was 69.5 MB in the beginning and 78.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:23:26,524 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 107.0 MB. Free memory was 87.4 MB in the beginning and 87.4 MB in the end (delta: 61.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:23:26,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.45 ms. Allocated memory is still 107.0 MB. Free memory was 69.4 MB in the beginning and 78.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:23:26,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 107.0 MB. Free memory was 87.4 MB in the beginning and 87.4 MB in the end (delta: 61.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 487.45 ms. Allocated memory is still 107.0 MB. Free memory was 69.4 MB in the beginning and 78.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:23:28,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:23:28,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:23:28,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:23:28,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:23:28,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:23:28,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:23:28,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:23:28,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:23:28,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:23:28,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:23:28,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:23:28,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:23:28,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:23:28,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:23:28,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:23:28,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:23:28,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:23:28,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:23:28,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:23:28,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:23:28,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:23:28,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:23:28,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:23:28,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:23:28,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:23:28,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:23:28,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:23:28,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:23:28,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:23:28,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:23:28,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:23:28,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:23:28,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:23:28,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:23:28,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:23:28,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:23:28,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:23:28,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:23:28,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:23:28,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:23:28,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 01:23:28,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:23:28,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:23:28,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:23:28,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:23:28,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:23:28,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:23:28,831 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:23:28,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:23:28,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:23:28,832 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:23:28,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:23:28,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:23:28,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:23:28,833 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:23:28,834 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:23:28,834 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:23:28,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:23:28,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:23:28,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:23:28,835 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:23:28,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:23:28,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:23:28,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:23:28,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:23:28,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:23:28,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:23:28,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:23:28,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:23:28,837 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:23:28,837 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:23:28,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:23:28,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:23:28,837 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_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 [2021-10-13 01:23:29,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:23:29,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:23:29,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:23:29,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:23:29,198 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:23:29,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-13 01:23:29,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data/82d6ad3b5/57544be9a2df47beabae80ad48c041ef/FLAGe8fe47cb6 [2021-10-13 01:23:29,844 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:23:29,844 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-13 01:23:29,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data/82d6ad3b5/57544be9a2df47beabae80ad48c041ef/FLAGe8fe47cb6 [2021-10-13 01:23:30,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/data/82d6ad3b5/57544be9a2df47beabae80ad48c041ef [2021-10-13 01:23:30,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:23:30,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:23:30,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:23:30,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:23:30,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:23:30,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:23:30" (1/1) ... [2021-10-13 01:23:30,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28de219b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:30, skipping insertion in model container [2021-10-13 01:23:30,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:23:30" (1/1) ... [2021-10-13 01:23:30,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:23:30,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:23:30,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:23:30,794 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 01:23:30,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:23:30,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:23:30,895 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:23:30,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:23:31,009 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:23:31,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31 WrapperNode [2021-10-13 01:23:31,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:23:31,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:23:31,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:23:31,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:23:31,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (1/1) ... [2021-10-13 01:23:31,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (1/1) ... [2021-10-13 01:23:31,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (1/1) ... [2021-10-13 01:23:31,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (1/1) ... [2021-10-13 01:23:31,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (1/1) ... [2021-10-13 01:23:31,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (1/1) ... [2021-10-13 01:23:31,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (1/1) ... [2021-10-13 01:23:31,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:23:31,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:23:31,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:23:31,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:23:31,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (1/1) ... [2021-10-13 01:23:31,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:23:31,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:23:31,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:23:31,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:23:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 01:23:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:23:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 01:23:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:23:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 01:23:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 01:23:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 01:23:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 01:23:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 01:23:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-13 01:23:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-13 01:23:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-13 01:23:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-13 01:23:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-13 01:23:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-13 01:23:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-13 01:23:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-13 01:23:31,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-13 01:23:31,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-13 01:23:31,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-13 01:23:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-13 01:23:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-13 01:23:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-13 01:23:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-13 01:23:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-13 01:23:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-13 01:23:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-13 01:23:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-13 01:23:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-13 01:23:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-13 01:23:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-13 01:23:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-13 01:23:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-13 01:23:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-13 01:23:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-13 01:23:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-13 01:23:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-13 01:23:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-13 01:23:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-13 01:23:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-13 01:23:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 01:23:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 01:23:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_13 [2021-10-13 01:23:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-13 01:23:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 01:23:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-13 01:23:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-13 01:23:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-13 01:23:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 01:23:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 01:23:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 01:23:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 01:23:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 01:23:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 01:23:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 01:23:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 01:23:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 01:23:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 01:23:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 01:23:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 01:23:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 01:23:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 01:23:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 01:23:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 01:23:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 01:23:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 01:23:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 01:23:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 01:23:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 01:23:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 01:23:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 01:23:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 01:23:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 01:23:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 01:23:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 01:23:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 01:23:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 01:23:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 01:23:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 01:23:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 01:23:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 01:23:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 01:23:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 01:23:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 01:23:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 01:23:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 01:23:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 01:23:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 01:23:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 01:23:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 01:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 01:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 01:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 01:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 01:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 01:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 01:23:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 01:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 01:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 01:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 01:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 01:23:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 01:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 01:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 01:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 01:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 01:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 01:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 01:23:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 01:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 01:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 01:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 01:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 01:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 01:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 01:23:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 01:23:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 01:23:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 01:23:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 01:23:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 01:23:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 01:23:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 01:23:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 01:23:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 01:23:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 01:23:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 01:23:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 01:23:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 01:23:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 01:23:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 01:23:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 01:23:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 01:23:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 01:23:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 01:23:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 01:23:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 01:23:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 01:23:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 01:23:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 01:23:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 01:23:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 01:23:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 01:23:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 01:23:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 01:23:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 01:23:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 01:23:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 01:23:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 01:23:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 01:23:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 01:23:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 01:23:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 01:23:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 01:23:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 01:23:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 01:23:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-13 01:23:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 01:23:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-13 01:23:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-13 01:23:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 01:23:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 01:23:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-13 01:23:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 01:23:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-13 01:23:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-13 01:23:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-13 01:23:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 01:23:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-13 01:23:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-13 01:23:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-13 01:23:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 01:23:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-13 01:23:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-13 01:23:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-13 01:23:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-13 01:23:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-13 01:23:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-13 01:23:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:23:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-13 01:23:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-13 01:23:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-13 01:23:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-13 01:23:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-13 01:23:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 01:23:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 01:23:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-13 01:23:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-13 01:23:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 01:23:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-13 01:23:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-13 01:23:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-13 01:23:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-13 01:23:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-13 01:23:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-13 01:23:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-13 01:23:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-13 01:23:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-13 01:23:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-13 01:23:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-13 01:23:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-13 01:23:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 01:23:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 01:23:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_13 [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-13 01:23:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-13 01:23:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-13 01:23:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-13 01:23:31,915 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 01:23:32,330 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 01:23:32,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:23:32,640 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-13 01:23:32,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:23:32 BoogieIcfgContainer [2021-10-13 01:23:32,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:23:32,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:23:32,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:23:32,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:23:32,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:23:30" (1/3) ... [2021-10-13 01:23:32,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d6cbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:23:32, skipping insertion in model container [2021-10-13 01:23:32,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:23:31" (2/3) ... [2021-10-13 01:23:32,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d6cbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:23:32, skipping insertion in model container [2021-10-13 01:23:32,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:23:32" (3/3) ... [2021-10-13 01:23:32,652 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_1.i [2021-10-13 01:23:32,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:23:32,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-13 01:23:32,700 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:23:32,706 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:23:32,706 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-13 01:23:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-13 01:23:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:23:32,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:23:32,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:23:32,731 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:23:32,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:23:32,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1239054828, now seen corresponding path program 1 times [2021-10-13 01:23:32,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:23:32,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619228158] [2021-10-13 01:23:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:23:32,749 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:23:32,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:23:32,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:23:32,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:23:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:23:33,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:23:33,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:23:33,135 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-13 01:23:33,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-13 01:23:33,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-13 01:23:33,437 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 01:23:33,437 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 15 treesize of output 20 [2021-10-13 01:23:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:23:33,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:23:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:23:33,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:23:33,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619228158] [2021-10-13 01:23:33,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619228158] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:23:33,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:23:33,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-10-13 01:23:33,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985774249] [2021-10-13 01:23:33,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:23:33,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:23:33,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:23:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:23:33,817 INFO L87 Difference]: Start difference. First operand has 124 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:23:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:23:34,330 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-10-13 01:23:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:23:34,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-10-13 01:23:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:23:34,340 INFO L225 Difference]: With dead ends: 67 [2021-10-13 01:23:34,340 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 01:23:34,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.5ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:23:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 01:23:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-13 01:23:34,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 44 states have internal predecessors, (44), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-13 01:23:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-10-13 01:23:34,377 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 17 [2021-10-13 01:23:34,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:23:34,377 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-10-13 01:23:34,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:23:34,378 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-10-13 01:23:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:23:34,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:23:34,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:23:34,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:23:34,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:23:34,591 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:23:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:23:34,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1239054827, now seen corresponding path program 1 times [2021-10-13 01:23:34,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:23:34,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862255167] [2021-10-13 01:23:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:23:34,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:23:34,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:23:34,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:23:34,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:23:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:23:34,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 01:23:34,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:23:34,838 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-13 01:23:34,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-10-13 01:23:34,855 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 01:23:34,856 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-10-13 01:23:35,472 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-13 01:23:35,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 56 [2021-10-13 01:23:35,490 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 01:23:35,491 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 56 treesize of output 52 [2021-10-13 01:23:37,814 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-13 01:23:37,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 61 [2021-10-13 01:23:37,869 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-10-13 01:23:37,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 72 [2021-10-13 01:23:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:23:38,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:23:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:23:52,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:23:52,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862255167] [2021-10-13 01:23:52,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862255167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:23:52,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:23:52,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 01:23:52,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230314843] [2021-10-13 01:23:52,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 01:23:52,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:23:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 01:23:52,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=140, Unknown=4, NotChecked=0, Total=182 [2021-10-13 01:23:52,474 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 01:24:23,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:24:23,585 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-10-13 01:24:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:24:23,587 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 17 [2021-10-13 01:24:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:24:23,589 INFO L225 Difference]: With dead ends: 60 [2021-10-13 01:24:23,589 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 01:24:23,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 15104.2ms TimeCoverageRelationStatistics Valid=83, Invalid=219, Unknown=4, NotChecked=0, Total=306 [2021-10-13 01:24:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 01:24:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-13 01:24:23,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 43 states have internal predecessors, (43), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-13 01:24:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-13 01:24:23,599 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 17 [2021-10-13 01:24:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:24:23,600 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-13 01:24:23,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 01:24:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-13 01:24:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 01:24:23,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:24:23,602 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:24:23,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 01:24:23,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:24:23,811 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:24:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:24:23,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1733078590, now seen corresponding path program 1 times [2021-10-13 01:24:23,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:24:23,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792257914] [2021-10-13 01:24:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:24:23,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:24:23,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:24:23,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:24:23,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:24:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:24:24,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 01:24:24,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:24:24,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-10-13 01:24:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:24:24,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:24:24,354 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-13 01:24:24,354 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 21 treesize of output 20 [2021-10-13 01:24:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:24:24,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:24:24,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792257914] [2021-10-13 01:24:24,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792257914] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:24:24,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:24:24,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-13 01:24:24,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838886090] [2021-10-13 01:24:24,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:24:24,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:24:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:24:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:24:24,459 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:24:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:24:24,919 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2021-10-13 01:24:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:24:24,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2021-10-13 01:24:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:24:24,922 INFO L225 Difference]: With dead ends: 78 [2021-10-13 01:24:24,922 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 01:24:24,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 270.6ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:24:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 01:24:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2021-10-13 01:24:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 28 states have (on average 1.5) internal successors, (42), 42 states have internal predecessors, (42), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-13 01:24:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-10-13 01:24:24,931 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 20 [2021-10-13 01:24:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:24:24,931 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-10-13 01:24:24,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:24:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-10-13 01:24:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 01:24:24,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:24:24,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:24:24,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:24:25,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:24:25,138 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:24:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:24:25,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1733078589, now seen corresponding path program 1 times [2021-10-13 01:24:25,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:24:25,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446558657] [2021-10-13 01:24:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:24:25,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:24:25,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:24:25,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:24:25,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:24:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:24:25,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 01:24:25,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:24:25,419 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 01:24:25,420 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 1 case distinctions, treesize of input 22 treesize of output 23 [2021-10-13 01:24:25,492 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-13 01:24:25,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 36 [2021-10-13 01:24:26,282 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-13 01:24:26,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 54 [2021-10-13 01:24:26,291 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 01:24:26,291 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 49 treesize of output 45 [2021-10-13 01:24:28,643 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-13 01:24:28,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-10-13 01:24:28,729 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-10-13 01:24:28,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 71 [2021-10-13 01:24:29,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-10-13 01:24:29,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-13 01:24:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:24:29,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:24:45,477 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 51 [2021-10-13 01:24:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:24:46,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:24:46,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446558657] [2021-10-13 01:24:46,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446558657] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:24:46,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:24:46,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-13 01:24:46,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370590562] [2021-10-13 01:24:46,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 01:24:46,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:24:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 01:24:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=322, Unknown=5, NotChecked=0, Total=380 [2021-10-13 01:24:46,213 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 01:25:39,313 WARN L207 SmtUtils]: Spent 10.49 s on a formula simplification that was a NOOP. DAG size: 67 [2021-10-13 01:26:30,856 WARN L207 SmtUtils]: Spent 10.44 s on a formula simplification that was a NOOP. DAG size: 56 [2021-10-13 01:26:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:35,277 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-10-13 01:26:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 01:26:35,278 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2021-10-13 01:26:35,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:35,279 INFO L225 Difference]: With dead ends: 77 [2021-10-13 01:26:35,280 INFO L226 Difference]: Without dead ends: 77 [2021-10-13 01:26:35,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 56040.2ms TimeCoverageRelationStatistics Valid=208, Invalid=837, Unknown=11, NotChecked=0, Total=1056 [2021-10-13 01:26:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-13 01:26:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2021-10-13 01:26:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 41 states have internal predecessors, (41), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-13 01:26:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-10-13 01:26:35,289 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 20 [2021-10-13 01:26:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:35,289 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-10-13 01:26:35,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 01:26:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-10-13 01:26:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:26:35,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:35,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:35,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:35,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:35,494 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:35,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1106040363, now seen corresponding path program 1 times [2021-10-13 01:26:35,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:35,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891352544] [2021-10-13 01:26:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:35,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:35,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:35,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 01:26:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:35,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:26:35,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:35,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:35,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:35,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891352544] [2021-10-13 01:26:35,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891352544] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:35,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:35,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 01:26:35,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201788950] [2021-10-13 01:26:35,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:26:35,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:35,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:26:35,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:26:35,900 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:26:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:35,924 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-13 01:26:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:26:35,925 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2021-10-13 01:26:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:35,926 INFO L225 Difference]: With dead ends: 58 [2021-10-13 01:26:35,926 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 01:26:35,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:26:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 01:26:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-13 01:26:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 40 states have internal predecessors, (40), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-13 01:26:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-10-13 01:26:35,932 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 19 [2021-10-13 01:26:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:35,932 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-10-13 01:26:35,932 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:26:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-10-13 01:26:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:26:35,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:35,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:35,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:36,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:36,145 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:36,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1302553868, now seen corresponding path program 1 times [2021-10-13 01:26:36,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:36,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890722005] [2021-10-13 01:26:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:36,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:36,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:36,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:36,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 01:26:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:36,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 01:26:36,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:36,444 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-13 01:26:36,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-13 01:26:36,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-13 01:26:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:36,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:36,746 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 11 treesize of output 9 [2021-10-13 01:26:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:36,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:36,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890722005] [2021-10-13 01:26:36,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890722005] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:36,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:36,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 01:26:36,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612483211] [2021-10-13 01:26:36,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:26:36,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:36,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:26:36,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:26:36,823 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 01:26:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:37,159 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-10-13 01:26:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:26:37,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 19 [2021-10-13 01:26:37,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:37,161 INFO L225 Difference]: With dead ends: 56 [2021-10-13 01:26:37,161 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 01:26:37,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:26:37,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 01:26:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-13 01:26:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 38 states have internal predecessors, (38), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-13 01:26:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-13 01:26:37,167 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 19 [2021-10-13 01:26:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:37,167 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-13 01:26:37,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 01:26:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-13 01:26:37,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:26:37,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:37,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:37,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:37,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:37,380 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1302553867, now seen corresponding path program 1 times [2021-10-13 01:26:37,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:37,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545075211] [2021-10-13 01:26:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:37,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:37,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:37,382 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:37,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 01:26:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:37,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 01:26:37,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:37,649 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 01:26:37,649 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-13 01:26:37,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-10-13 01:26:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:37,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:38,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-13 01:26:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:38,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:38,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545075211] [2021-10-13 01:26:38,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545075211] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:38,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:38,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 01:26:38,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401744417] [2021-10-13 01:26:38,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:26:38,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:26:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:26:38,665 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 01:26:39,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:39,827 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-10-13 01:26:39,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:26:39,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 19 [2021-10-13 01:26:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:39,829 INFO L225 Difference]: With dead ends: 80 [2021-10-13 01:26:39,829 INFO L226 Difference]: Without dead ends: 67 [2021-10-13 01:26:39,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 535.3ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:26:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-13 01:26:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2021-10-13 01:26:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.411764705882353) internal successors, (48), 42 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-13 01:26:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-10-13 01:26:39,834 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 19 [2021-10-13 01:26:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:39,835 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-10-13 01:26:39,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 01:26:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-10-13 01:26:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:26:39,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:39,836 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:39,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:40,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:40,048 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:40,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:40,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2109138627, now seen corresponding path program 1 times [2021-10-13 01:26:40,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:40,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104758845] [2021-10-13 01:26:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:40,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:40,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:40,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:40,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 01:26:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:40,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:26:40,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:40,359 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 [2021-10-13 01:26:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:40,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:40,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:40,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104758845] [2021-10-13 01:26:40,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104758845] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:40,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:40,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-13 01:26:40,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429217654] [2021-10-13 01:26:40,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:26:40,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:40,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:26:40,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:26:40,752 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:26:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:41,201 INFO L93 Difference]: Finished difference Result 64 states and 63 transitions. [2021-10-13 01:26:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:26:41,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-10-13 01:26:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:41,202 INFO L225 Difference]: With dead ends: 64 [2021-10-13 01:26:41,202 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 01:26:41,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 260.4ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:26:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 01:26:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2021-10-13 01:26:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-13 01:26:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-13 01:26:41,209 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 21 [2021-10-13 01:26:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:41,210 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-13 01:26:41,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:26:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-13 01:26:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:26:41,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:41,211 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:41,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:41,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:41,423 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:41,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:41,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2109138628, now seen corresponding path program 1 times [2021-10-13 01:26:41,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:41,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783520144] [2021-10-13 01:26:41,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:41,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:41,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:41,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:41,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 01:26:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:41,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 01:26:41,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:41,740 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 [2021-10-13 01:26:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:41,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:42,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:42,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783520144] [2021-10-13 01:26:42,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783520144] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:42,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:42,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-10-13 01:26:42,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055067712] [2021-10-13 01:26:42,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:26:42,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:26:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:26:42,947 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:26:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:44,256 INFO L93 Difference]: Finished difference Result 62 states and 61 transitions. [2021-10-13 01:26:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:26:44,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2021-10-13 01:26:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:44,258 INFO L225 Difference]: With dead ends: 62 [2021-10-13 01:26:44,258 INFO L226 Difference]: Without dead ends: 62 [2021-10-13 01:26:44,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 963.5ms TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:26:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-13 01:26:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-10-13 01:26:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 41 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-13 01:26:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-10-13 01:26:44,262 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 21 [2021-10-13 01:26:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:44,263 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-10-13 01:26:44,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:26:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-10-13 01:26:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:26:44,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:44,264 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:44,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-13 01:26:44,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:44,470 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:44,471 INFO L82 PathProgramCache]: Analyzing trace with hash -2056745950, now seen corresponding path program 1 times [2021-10-13 01:26:44,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:44,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027070888] [2021-10-13 01:26:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:44,471 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:44,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:44,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:44,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 01:26:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:44,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:26:44,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:44,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:45,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:45,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027070888] [2021-10-13 01:26:45,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027070888] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:45,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:45,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 01:26:45,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243330184] [2021-10-13 01:26:45,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:26:45,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:26:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:26:45,019 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:26:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:45,035 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-10-13 01:26:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:26:45,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-10-13 01:26:45,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:45,037 INFO L225 Difference]: With dead ends: 48 [2021-10-13 01:26:45,037 INFO L226 Difference]: Without dead ends: 44 [2021-10-13 01:26:45,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:26:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-13 01:26:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-13 01:26:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 28 states have internal predecessors, (28), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 01:26:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 43 transitions. [2021-10-13 01:26:45,040 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 43 transitions. Word has length 21 [2021-10-13 01:26:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:45,040 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 43 transitions. [2021-10-13 01:26:45,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:26:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 43 transitions. [2021-10-13 01:26:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:26:45,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:45,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:45,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:45,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:45,251 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -342340858, now seen corresponding path program 1 times [2021-10-13 01:26:45,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:45,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139826298] [2021-10-13 01:26:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:45,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:45,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:45,252 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:45,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 01:26:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:45,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:26:45,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:45,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:45,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:45,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139826298] [2021-10-13 01:26:45,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139826298] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:45,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:45,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 01:26:45,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095622820] [2021-10-13 01:26:45,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:26:45,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:45,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:26:45,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:26:45,731 INFO L87 Difference]: Start difference. First operand 44 states and 43 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:26:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:45,841 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2021-10-13 01:26:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:26:45,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-13 01:26:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:45,842 INFO L225 Difference]: With dead ends: 43 [2021-10-13 01:26:45,842 INFO L226 Difference]: Without dead ends: 43 [2021-10-13 01:26:45,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:26:45,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-13 01:26:45,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-13 01:26:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 27 states have internal predecessors, (27), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 01:26:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2021-10-13 01:26:45,856 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 23 [2021-10-13 01:26:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:45,856 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2021-10-13 01:26:45,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:26:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2021-10-13 01:26:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:26:45,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:45,861 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:45,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:46,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:46,061 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:46,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:46,062 INFO L82 PathProgramCache]: Analyzing trace with hash -342340857, now seen corresponding path program 1 times [2021-10-13 01:26:46,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:46,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738816744] [2021-10-13 01:26:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:46,063 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:46,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:46,063 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:46,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 01:26:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:46,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:26:46,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:46,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:46,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-13 01:26:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:47,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:47,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738816744] [2021-10-13 01:26:47,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738816744] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:47,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:47,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 01:26:47,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253775206] [2021-10-13 01:26:47,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 01:26:47,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 01:26:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:26:47,142 INFO L87 Difference]: Start difference. First operand 43 states and 42 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 01:26:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:47,575 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2021-10-13 01:26:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:26:47,591 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 23 [2021-10-13 01:26:47,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:47,591 INFO L225 Difference]: With dead ends: 42 [2021-10-13 01:26:47,592 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 01:26:47,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 570.7ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:26:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 01:26:47,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-13 01:26:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 01:26:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 41 transitions. [2021-10-13 01:26:47,595 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 41 transitions. Word has length 23 [2021-10-13 01:26:47,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:47,595 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 41 transitions. [2021-10-13 01:26:47,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 01:26:47,596 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2021-10-13 01:26:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 01:26:47,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:47,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:47,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:47,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:47,809 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:47,810 INFO L82 PathProgramCache]: Analyzing trace with hash 891555764, now seen corresponding path program 1 times [2021-10-13 01:26:47,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:47,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205968883] [2021-10-13 01:26:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:47,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:47,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:47,811 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:47,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 01:26:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:48,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:26:48,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:48,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:48,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-13 01:26:49,229 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:26:49,229 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 16 treesize of output 20 [2021-10-13 01:26:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:49,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:49,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205968883] [2021-10-13 01:26:49,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205968883] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:49,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:49,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-10-13 01:26:49,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432433152] [2021-10-13 01:26:49,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 01:26:49,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 01:26:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:26:49,433 INFO L87 Difference]: Start difference. First operand 42 states and 41 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-13 01:26:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:49,981 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2021-10-13 01:26:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:26:49,982 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) Word has length 33 [2021-10-13 01:26:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:49,983 INFO L225 Difference]: With dead ends: 41 [2021-10-13 01:26:49,983 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 01:26:49,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 627.0ms TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:26:49,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 01:26:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-13 01:26:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 01:26:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 40 transitions. [2021-10-13 01:26:49,986 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 40 transitions. Word has length 33 [2021-10-13 01:26:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:49,986 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 40 transitions. [2021-10-13 01:26:49,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-13 01:26:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 40 transitions. [2021-10-13 01:26:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 01:26:49,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:49,987 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:49,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:50,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:50,190 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1868424939, now seen corresponding path program 1 times [2021-10-13 01:26:50,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:50,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391294864] [2021-10-13 01:26:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:50,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:50,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:50,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:50,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 01:26:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:50,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 01:26:50,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:50,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-10-13 01:26:50,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-10-13 01:26:51,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-10-13 01:26:51,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-10-13 01:26:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:51,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:26:51,943 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:26:51,943 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 32 treesize of output 36 [2021-10-13 01:26:52,534 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:26:52,534 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 24 treesize of output 28 [2021-10-13 01:26:52,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-13 01:26:52,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-10-13 01:26:53,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:26:53,196 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 16 treesize of output 20 [2021-10-13 01:26:53,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-10-13 01:26:53,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-13 01:26:53,852 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:26:53,852 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 16 treesize of output 20 [2021-10-13 01:26:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:26:54,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:26:54,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391294864] [2021-10-13 01:26:54,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391294864] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:26:54,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:26:54,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 01:26:54,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825844803] [2021-10-13 01:26:54,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 01:26:54,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:26:54,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 01:26:54,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2021-10-13 01:26:54,812 INFO L87 Difference]: Start difference. First operand 41 states and 40 transitions. Second operand has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-10-13 01:26:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:56,843 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2021-10-13 01:26:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 01:26:56,844 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) Word has length 34 [2021-10-13 01:26:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:26:56,845 INFO L225 Difference]: With dead ends: 40 [2021-10-13 01:26:56,845 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 01:26:56,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2928.9ms TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 01:26:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 01:26:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-13 01:26:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 01:26:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 39 transitions. [2021-10-13 01:26:56,848 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 39 transitions. Word has length 34 [2021-10-13 01:26:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:26:56,848 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 39 transitions. [2021-10-13 01:26:56,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-10-13 01:26:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 39 transitions. [2021-10-13 01:26:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 01:26:56,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:26:56,849 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:26:56,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:57,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:57,050 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 01:26:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1326046929, now seen corresponding path program 1 times [2021-10-13 01:26:57,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:26:57,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535610527] [2021-10-13 01:26:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:57,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:26:57,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:26:57,052 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:26:57,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 01:26:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:57,522 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:57,644 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 01:26:57,644 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:26:57,645 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:26:57,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-13 01:26:57,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-13 01:26:57,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-13 01:26:57,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-13 01:26:57,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-13 01:26:57,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-13 01:26:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-13 01:26:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-13 01:26:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-13 01:26:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-13 01:26:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 01:26:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 01:26:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-13 01:26:57,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-13 01:26:57,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-13 01:26:57,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-13 01:26:57,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-13 01:26:57,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-13 01:26:57,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,654 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,654 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,654 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,654 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,654 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,654 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,655 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,655 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,655 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,655 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-13 01:26:57,655 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-13 01:26:57,655 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-13 01:26:57,656 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-13 01:26:57,656 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,656 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,656 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,656 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,656 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:26:57,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 01:26:57,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 01:26:57,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-13 01:26:57,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-13 01:26:57,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:57,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:26:57,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:26:57,891 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 01:26:57,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:26:57 BoogieIcfgContainer [2021-10-13 01:26:57,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:26:57,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:26:57,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:26:57,909 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:26:57,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:23:32" (3/4) ... [2021-10-13 01:26:57,917 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:26:57,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:26:57,918 INFO L168 Benchmark]: Toolchain (without parser) took 207795.04 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 67.7 MB in the beginning and 81.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:57,918 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:26:57,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 884.79 ms. Allocated memory is still 86.0 MB. Free memory was 67.5 MB in the beginning and 50.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:57,919 INFO L168 Benchmark]: Boogie Preprocessor took 164.99 ms. Allocated memory is still 86.0 MB. Free memory was 50.7 MB in the beginning and 46.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:57,919 INFO L168 Benchmark]: RCFGBuilder took 1465.92 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 46.0 MB in the beginning and 85.0 MB in the end (delta: -38.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:57,920 INFO L168 Benchmark]: TraceAbstraction took 205264.06 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 84.4 MB in the beginning and 82.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:57,920 INFO L168 Benchmark]: Witness Printer took 8.47 ms. Allocated memory is still 132.1 MB. Free memory was 82.3 MB in the beginning and 81.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:57,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 884.79 ms. Allocated memory is still 86.0 MB. Free memory was 67.5 MB in the beginning and 50.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 164.99 ms. Allocated memory is still 86.0 MB. Free memory was 50.7 MB in the beginning and 46.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1465.92 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 46.0 MB in the beginning and 85.0 MB in the end (delta: -38.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 205264.06 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 84.4 MB in the beginning and 82.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * Witness Printer took 8.47 ms. Allocated memory is still 132.1 MB. Free memory was 82.3 MB in the beginning and 81.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 772]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 772. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [\old(global_list_13)=null, \old(global_list_13)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L773] CALL entry_point() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L769] CALL alloc_13() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L763] CALL, EXPR ldv_malloc(sizeof(struct A13)) VAL [\old(size)=12, global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] RET, EXPR ldv_malloc(sizeof(struct A13)) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, ldv_malloc(sizeof(struct A13))={1:0}] [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, p={1:0}] [L765] CALL ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}] [L559] EXPR head->next VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, head={-2147483648:0}, head->next={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, next={-2147483648:0}, prev={-2147483648:0}] [L547] next->prev = new VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L548] new->next = next VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L549] new->prev = prev VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L550] prev->next = new VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, head={-2147483648:0}, head->next={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}] [L765] RET ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, p={1:0}] [L769] RET alloc_13() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L770] CALL LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}] [L540] list->next = list VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}, list={-2147483648:0}] [L541] list->prev = list VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}, list={-2147483648:0}] [L770] RET LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L773] RET entry_point() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 335 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 205176.8ms, OverallIterations: 15, TraceHistogramMax: 1, EmptinessCheckTime: 25.9ms, AutomataDifference: 147654.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 498 SDtfs, 945 SDslu, 1703 SDs, 0 SdLazy, 2304 SolverSat, 432 SolverUnsat, 60 SolverUnknown, 0 SolverNotchecked, 106164.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 435 SyntacticMatches, 31 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 77731.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 96.3ms AutomataMinimizationTime, 14 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 163.3ms SsaConstructionTime, 705.3ms SatisfiabilityAnalysisTime, 49869.2ms InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 586 ConstructedInterpolants, 38 QuantifiedInterpolants, 6185 SizeOfPredicates, 128 NumberOfNonLiveVariables, 1929 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:26:57,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b63e630-1d7f-4683-bd17-04333945f302/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...