./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0137.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_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/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_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0137.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/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_6e78f432-ef73-4617-8754-692821945446/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 02e31cc404916825c13dd11581f204b959a58dc6 ................................................................................................................................... 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_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/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_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0137.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/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_6e78f432-ef73-4617-8754-692821945446/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 02e31cc404916825c13dd11581f204b959a58dc6 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:20:14,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:20:14,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:20:14,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:20:14,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:20:14,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:20:14,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:20:14,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:20:14,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:20:14,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:20:14,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:20:14,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:20:14,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:20:14,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:20:14,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:20:14,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:20:14,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:20:14,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:20:14,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:20:14,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:20:14,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:20:14,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:20:14,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:20:14,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:20:14,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:20:14,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:20:14,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:20:14,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:20:14,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:20:14,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:20:14,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:20:14,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:20:14,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:20:14,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:20:14,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:20:14,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:20:14,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:20:14,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:20:14,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:20:14,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:20:14,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:20:14,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 01:20:14,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:20:14,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:20:14,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:20:14,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:20:14,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:20:14,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:20:14,736 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:20:14,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:20:14,736 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:20:14,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:20:14,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:20:14,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:20:14,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:20:14,737 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:20:14,737 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:20:14,738 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:20:14,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:20:14,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:20:14,738 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:20:14,738 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:20:14,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:20:14,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:20:14,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:20:14,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:20:14,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:20:14,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:20:14,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:20:14,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:20:14,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:20:14,740 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_6e78f432-ef73-4617-8754-692821945446/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02e31cc404916825c13dd11581f204b959a58dc6 [2021-10-13 01:20:15,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:20:15,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:20:15,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:20:15,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:20:15,062 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:20:15,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/memsafety/test-0137.i [2021-10-13 01:20:15,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data/95ca2439a/f52eb41e03a444dfb441f595fc00eff3/FLAGe4bbbb559 [2021-10-13 01:20:15,731 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:20:15,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/sv-benchmarks/c/memsafety/test-0137.i [2021-10-13 01:20:15,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data/95ca2439a/f52eb41e03a444dfb441f595fc00eff3/FLAGe4bbbb559 [2021-10-13 01:20:15,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data/95ca2439a/f52eb41e03a444dfb441f595fc00eff3 [2021-10-13 01:20:15,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:20:15,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:20:15,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:20:15,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:20:15,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:20:15,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:20:15" (1/1) ... [2021-10-13 01:20:15,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fdf07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:15, skipping insertion in model container [2021-10-13 01:20:15,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:20:15" (1/1) ... [2021-10-13 01:20:15,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:20:16,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:20:16,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:20:16,397 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 01:20:16,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@472ae9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:16, skipping insertion in model container [2021-10-13 01:20:16,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:20:16,398 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 01:20:16,401 INFO L168 Benchmark]: Toolchain (without parser) took 430.68 ms. Allocated memory is still 107.0 MB. Free memory was 85.2 MB in the beginning and 73.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:20:16,402 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:20:16,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.29 ms. Allocated memory is still 107.0 MB. Free memory was 85.0 MB in the beginning and 73.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:20:16,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 428.29 ms. Allocated memory is still 107.0 MB. Free memory was 85.0 MB in the beginning and 73.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 585]: 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 01:20:18,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:20:18,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:20:18,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:20:18,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:20:18,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:20:18,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:20:18,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:20:18,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:20:18,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:20:18,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:20:18,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:20:18,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:20:18,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:20:18,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:20:18,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:20:18,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:20:18,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:20:18,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:20:18,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:20:18,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:20:18,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:20:18,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:20:18,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:20:18,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:20:18,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:20:18,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:20:18,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:20:18,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:20:18,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:20:18,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:20:18,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:20:18,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:20:18,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:20:18,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:20:18,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:20:18,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:20:18,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:20:18,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:20:18,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:20:18,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:20:18,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 01:20:18,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:20:18,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:20:18,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:20:18,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:20:18,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:20:18,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:20:18,962 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:20:18,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:20:18,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:20:18,963 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:20:18,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:20:18,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:20:18,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:20:18,965 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:20:18,965 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:20:18,965 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:20:18,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:20:18,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:20:18,966 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:20:18,966 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:20:18,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:20:18,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:20:18,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:20:18,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:20:18,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:20:18,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:20:18,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:20:18,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:20:18,969 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:20:18,969 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:20:18,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:20:18,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:20:18,970 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_6e78f432-ef73-4617-8754-692821945446/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02e31cc404916825c13dd11581f204b959a58dc6 [2021-10-13 01:20:19,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:20:19,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:20:19,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:20:19,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:20:19,390 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:20:19,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/memsafety/test-0137.i [2021-10-13 01:20:19,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data/dc3e1f0d1/0407ce52a3c249b1be73be7bb0c9fa67/FLAGa8786e753 [2021-10-13 01:20:20,151 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:20:20,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/sv-benchmarks/c/memsafety/test-0137.i [2021-10-13 01:20:20,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data/dc3e1f0d1/0407ce52a3c249b1be73be7bb0c9fa67/FLAGa8786e753 [2021-10-13 01:20:20,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/data/dc3e1f0d1/0407ce52a3c249b1be73be7bb0c9fa67 [2021-10-13 01:20:20,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:20:20,411 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:20:20,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:20:20,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:20:20,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:20:20,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:20:20" (1/1) ... [2021-10-13 01:20:20,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a06ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:20, skipping insertion in model container [2021-10-13 01:20:20,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:20:20" (1/1) ... [2021-10-13 01:20:20,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:20:20,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:20:20,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:20:20,878 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 01:20:20,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:20:20,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:20:20,977 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:20:21,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:20:21,113 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:20:21,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21 WrapperNode [2021-10-13 01:20:21,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:20:21,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:20:21,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:20:21,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:20:21,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (1/1) ... [2021-10-13 01:20:21,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (1/1) ... [2021-10-13 01:20:21,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (1/1) ... [2021-10-13 01:20:21,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (1/1) ... [2021-10-13 01:20:21,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (1/1) ... [2021-10-13 01:20:21,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (1/1) ... [2021-10-13 01:20:21,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (1/1) ... [2021-10-13 01:20:21,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:20:21,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:20:21,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:20:21,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:20:21,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (1/1) ... [2021-10-13 01:20:21,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:20:21,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:20:21,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:20:21,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 01:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 01:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 01:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 01:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 01:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 01:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 01:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-10-13 01:20:21,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-10-13 01:20:21,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-10-13 01:20:21,294 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-10-13 01:20:21,294 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-10-13 01:20:21,294 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2021-10-13 01:20:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2021-10-13 01:20:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2021-10-13 01:20:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2021-10-13 01:20:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-10-13 01:20:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_seek_max [2021-10-13 01:20:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2021-10-13 01:20:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 01:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 01:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 01:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 01:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 01:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 01:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 01:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 01:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 01:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 01:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 01:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 01:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 01:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 01:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 01:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 01:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 01:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 01:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 01:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 01:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 01:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 01:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 01:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 01:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 01:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 01:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 01:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 01:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 01:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 01:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 01:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 01:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 01:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 01:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 01:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 01:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 01:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 01:20:21,303 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 01:20:21,303 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 01:20:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 01:20:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 01:20:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 01:20:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 01:20:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 01:20:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 01:20:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 01:20:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 01:20:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 01:20:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 01:20:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 01:20:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 01:20:21,306 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 01:20:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 01:20:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 01:20:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 01:20:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 01:20:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 01:20:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 01:20:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 01:20:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 01:20:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 01:20:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 01:20:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 01:20:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 01:20:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 01:20:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 01:20:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 01:20:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 01:20:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 01:20:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 01:20:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 01:20:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 01:20:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 01:20:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 01:20:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 01:20:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 01:20:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 01:20:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 01:20:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 01:20:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 01:20:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 01:20:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 01:20:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 01:20:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 01:20:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 01:20:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 01:20:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 01:20:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 01:20:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 01:20:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 01:20:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 01:20:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 01:20:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 01:20:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 01:20:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 01:20:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 01:20:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 01:20:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 01:20:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 01:20:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 01:20:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 01:20:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 01:20:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 01:20:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 01:20:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 01:20:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 01:20:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 01:20:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 01:20:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 01:20:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 01:20:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 01:20:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 01:20:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-10-13 01:20:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 01:20:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-10-13 01:20:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 01:20:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-10-13 01:20:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-10-13 01:20:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-10-13 01:20:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2021-10-13 01:20:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2021-10-13 01:20:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 01:20:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 01:20:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2021-10-13 01:20:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2021-10-13 01:20:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:20:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-10-13 01:20:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 01:20:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure gl_seek_max [2021-10-13 01:20:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2021-10-13 01:20:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 01:20:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 01:20:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 01:20:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 01:20:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:20:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:20:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 01:20:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 01:20:22,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:20:22,364 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 01:20:22,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:20:22 BoogieIcfgContainer [2021-10-13 01:20:22,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:20:22,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:20:22,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:20:22,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:20:22,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:20:20" (1/3) ... [2021-10-13 01:20:22,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106c131f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:20:22, skipping insertion in model container [2021-10-13 01:20:22,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:20:21" (2/3) ... [2021-10-13 01:20:22,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106c131f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:20:22, skipping insertion in model container [2021-10-13 01:20:22,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:20:22" (3/3) ... [2021-10-13 01:20:22,377 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0137.i [2021-10-13 01:20:22,382 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:20:22,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-10-13 01:20:22,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:20:22,426 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 01:20:22,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-10-13 01:20:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 85 states have (on average 1.8235294117647058) internal successors, (155), 145 states have internal predecessors, (155), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-13 01:20:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:20:22,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:20:22,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:20:22,472 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gl_insertErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:20:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:20:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash 584488031, now seen corresponding path program 1 times [2021-10-13 01:20:22,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:20:22,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361796955] [2021-10-13 01:20:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:20:22,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:20:22,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:20:22,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:20:22,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:20:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:20:22,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 01:20:22,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:20:22,851 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 01:20:22,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:20:22,886 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 01:20:22,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:20:22,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361796955] [2021-10-13 01:20:22,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361796955] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:20:22,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:20:22,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 01:20:22,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748865659] [2021-10-13 01:20:22,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:20:22,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:20:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:20:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:20:22,913 INFO L87 Difference]: Start difference. First operand has 174 states, 85 states have (on average 1.8235294117647058) internal successors, (155), 145 states have internal predecessors, (155), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:20:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:20:22,938 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2021-10-13 01:20:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:20:22,940 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-13 01:20:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:20:22,949 INFO L225 Difference]: With dead ends: 165 [2021-10-13 01:20:22,949 INFO L226 Difference]: Without dead ends: 162 [2021-10-13 01:20:22,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:20:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-13 01:20:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-10-13 01:20:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 78 states have (on average 1.794871794871795) internal successors, (140), 135 states have internal predecessors, (140), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-13 01:20:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2021-10-13 01:20:23,009 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 10 [2021-10-13 01:20:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:20:23,010 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2021-10-13 01:20:23,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:20:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2021-10-13 01:20:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:20:23,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:20:23,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:20:23,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:20:23,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:20:23,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gl_insertErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:20:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:20:23,224 INFO L82 PathProgramCache]: Analyzing trace with hash 584488093, now seen corresponding path program 1 times [2021-10-13 01:20:23,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:20:23,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371256284] [2021-10-13 01:20:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:20:23,226 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:20:23,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:20:23,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:20:23,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:20:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:20:23,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:20:23,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:20:23,464 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 01:20:23,478 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 01:20:23,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:20:23,533 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 01:20:23,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:20:23,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371256284] [2021-10-13 01:20:23,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371256284] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:20:23,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:20:23,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 01:20:23,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406231783] [2021-10-13 01:20:23,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:20:23,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:20:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:20:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:20:23,547 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:20:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:20:23,778 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-10-13 01:20:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:20:23,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-13 01:20:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:20:23,781 INFO L225 Difference]: With dead ends: 161 [2021-10-13 01:20:23,781 INFO L226 Difference]: Without dead ends: 161 [2021-10-13 01:20:23,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:20:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-13 01:20:23,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-10-13 01:20:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 134 states have internal predecessors, (139), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-13 01:20:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2021-10-13 01:20:23,797 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 10 [2021-10-13 01:20:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:20:23,797 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2021-10-13 01:20:23,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:20:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2021-10-13 01:20:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:20:23,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:20:23,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:20:23,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:20:24,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:20:24,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gl_insertErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:20:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:20:24,011 INFO L82 PathProgramCache]: Analyzing trace with hash 584488094, now seen corresponding path program 1 times [2021-10-13 01:20:24,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:20:24,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564293855] [2021-10-13 01:20:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:20:24,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:20:24,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:20:24,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:20:24,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:20:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:20:24,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:20:24,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:20:24,220 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 01:20:24,253 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 01:20:24,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:20:24,350 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 01:20:24,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:20:24,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564293855] [2021-10-13 01:20:24,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564293855] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:20:24,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:20:24,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 01:20:24,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329559883] [2021-10-13 01:20:24,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:20:24,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:20:24,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:20:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:20:24,353 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:20:24,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:20:24,903 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-10-13 01:20:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:20:24,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-13 01:20:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:20:24,907 INFO L225 Difference]: With dead ends: 160 [2021-10-13 01:20:24,908 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 01:20:24,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:20:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 01:20:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-13 01:20:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 78 states have (on average 1.7692307692307692) internal successors, (138), 133 states have internal predecessors, (138), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-13 01:20:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2021-10-13 01:20:24,921 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 10 [2021-10-13 01:20:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:20:24,922 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions. [2021-10-13 01:20:24,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:20:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions. [2021-10-13 01:20:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 01:20:24,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:20:24,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:20:24,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 01:20:25,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:20:25,134 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:20:25,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:20:25,134 INFO L82 PathProgramCache]: Analyzing trace with hash 687588142, now seen corresponding path program 1 times [2021-10-13 01:20:25,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:20:25,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101905152] [2021-10-13 01:20:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:20:25,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:20:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:20:25,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:20:25,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:20:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:20:25,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 01:20:25,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:20:25,408 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 01:20:25,409 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 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-13 01:20:25,724 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 01:20:25,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-13 01:20:26,031 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 01:20:26,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:20:42,393 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 01:20:42,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:20:42,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101905152] [2021-10-13 01:20:42,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101905152] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:20:42,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:20:42,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 01:20:42,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025732597] [2021-10-13 01:20:42,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:20:42,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:20:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:20:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2021-10-13 01:20:42,396 INFO L87 Difference]: Start difference. First operand 160 states and 169 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:20:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:20:43,532 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2021-10-13 01:20:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:20:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-10-13 01:20:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:20:43,536 INFO L225 Difference]: With dead ends: 188 [2021-10-13 01:20:43,536 INFO L226 Difference]: Without dead ends: 188 [2021-10-13 01:20:43,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 16392.8ms TimeCoverageRelationStatistics Valid=45, Invalid=84, Unknown=3, NotChecked=0, Total=132 [2021-10-13 01:20:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-13 01:20:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 171. [2021-10-13 01:20:43,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 88 states have (on average 1.6704545454545454) internal successors, (147), 140 states have internal predecessors, (147), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2021-10-13 01:20:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 184 transitions. [2021-10-13 01:20:43,570 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 184 transitions. Word has length 13 [2021-10-13 01:20:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:20:43,571 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 184 transitions. [2021-10-13 01:20:43,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:20:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 184 transitions. [2021-10-13 01:20:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 01:20:43,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:20:43,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:20:43,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:20:43,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:20:43,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:20:43,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:20:43,784 INFO L82 PathProgramCache]: Analyzing trace with hash 687588143, now seen corresponding path program 1 times [2021-10-13 01:20:43,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:20:43,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284439581] [2021-10-13 01:20:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:20:43,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:20:43,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:20:43,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:20:43,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 01:20:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:20:43,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 01:20:43,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:20:44,038 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-13 01:20:44,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 42 [2021-10-13 01:20:44,114 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 01:20:44,114 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 3 case distinctions, treesize of input 42 treesize of output 63 [2021-10-13 01:20:44,579 INFO L354 Elim1Store]: treesize reduction -2, result has 108.0 percent of original size [2021-10-13 01:20:44,579 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 45 treesize of output 65 [2021-10-13 01:20:44,635 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-13 01:20:44,636 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 65 treesize of output 72 [2021-10-13 01:20:45,304 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 01:20:45,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:20:52,921 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 01:20:52,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:20:52,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284439581] [2021-10-13 01:20:52,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284439581] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:20:52,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:20:52,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 01:20:52,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081219125] [2021-10-13 01:20:52,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:20:52,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:20:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:20:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-10-13 01:20:52,924 INFO L87 Difference]: Start difference. First operand 171 states and 184 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:21:07,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:07,323 INFO L93 Difference]: Finished difference Result 224 states and 231 transitions. [2021-10-13 01:21:07,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:21:07,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-10-13 01:21:07,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:07,332 INFO L225 Difference]: With dead ends: 224 [2021-10-13 01:21:07,332 INFO L226 Difference]: Without dead ends: 224 [2021-10-13 01:21:07,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 13549.8ms TimeCoverageRelationStatistics Valid=67, Invalid=141, Unknown=2, NotChecked=0, Total=210 [2021-10-13 01:21:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-13 01:21:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 185. [2021-10-13 01:21:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 105 states have (on average 1.6476190476190475) internal successors, (173), 152 states have internal predecessors, (173), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-10-13 01:21:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 209 transitions. [2021-10-13 01:21:07,342 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 209 transitions. Word has length 13 [2021-10-13 01:21:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:07,343 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 209 transitions. [2021-10-13 01:21:07,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:21:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 209 transitions. [2021-10-13 01:21:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:21:07,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:07,344 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:07,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 01:21:07,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:21:07,558 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:21:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1239538309, now seen corresponding path program 1 times [2021-10-13 01:21:07,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:21:07,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707884879] [2021-10-13 01:21:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:07,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:21:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:21:07,561 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:21:07,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 01:21:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:07,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 01:21:07,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:07,909 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 01:21:07,909 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 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-13 01:21:08,247 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 01:21:08,247 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 15 treesize of output 15 [2021-10-13 01:21:08,355 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 01:21:08,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 60 treesize of output 15 [2021-10-13 01:21:08,427 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 25 treesize of output 17 [2021-10-13 01:21:08,511 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 01:21:08,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:21:08,578 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-13 01:21:08,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 01:21:23,298 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_13 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_13))))) (= (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13) gl_insert_~node~0.offset v_DerPreprocessor_1) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.base|))) is different from false [2021-10-13 01:21:25,343 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_13 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_13)))))) (= (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13) gl_insert_~node~0.offset v_DerPreprocessor_1) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.base|))) is different from false [2021-10-13 01:21:25,572 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 01:21:25,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:21:25,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707884879] [2021-10-13 01:21:25,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707884879] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:25,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:25,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 11] imperfect sequences [] total 13 [2021-10-13 01:21:25,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035405091] [2021-10-13 01:21:25,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 01:21:25,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:21:25,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 01:21:25,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=8, NotChecked=42, Total=182 [2021-10-13 01:21:25,581 INFO L87 Difference]: Start difference. First operand 185 states and 209 transitions. Second operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:21:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:29,639 INFO L93 Difference]: Finished difference Result 208 states and 234 transitions. [2021-10-13 01:21:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:21:29,640 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-10-13 01:21:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:29,642 INFO L225 Difference]: With dead ends: 208 [2021-10-13 01:21:29,643 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 01:21:29,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 18965.7ms TimeCoverageRelationStatistics Valid=80, Invalid=261, Unknown=9, NotChecked=70, Total=420 [2021-10-13 01:21:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 01:21:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 200. [2021-10-13 01:21:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 116 states have (on average 1.646551724137931) internal successors, (191), 163 states have internal predecessors, (191), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-13 01:21:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 233 transitions. [2021-10-13 01:21:29,664 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 233 transitions. Word has length 16 [2021-10-13 01:21:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:29,665 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 233 transitions. [2021-10-13 01:21:29,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:21:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 233 transitions. [2021-10-13 01:21:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:21:29,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:29,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:29,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:29,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:21:29,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:21:29,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:29,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1239538310, now seen corresponding path program 1 times [2021-10-13 01:21:29,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:21:29,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114962627] [2021-10-13 01:21:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:29,880 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:21:29,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:21:29,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:21:29,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 01:21:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:30,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 01:21:30,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:30,287 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 01:21:30,287 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 3 case distinctions, treesize of input 28 treesize of output 49 [2021-10-13 01:21:30,371 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-13 01:21:30,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 63 [2021-10-13 01:21:31,012 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-13 01:21:31,012 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 47 treesize of output 54 [2021-10-13 01:21:31,068 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-13 01:21:31,069 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 51 treesize of output 67 [2021-10-13 01:21:31,587 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 01:21:31,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 116 treesize of output 71 [2021-10-13 01:21:31,649 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 01:21:31,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 68 treesize of output 23 [2021-10-13 01:21:31,870 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 01:21:31,874 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 01:21:32,017 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 01:21:32,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:21:35,101 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| c_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_gl_insert_~node~0.base) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_gl_insert_~node~0.base) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| c_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_gl_insert_~node~0.base) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) is different from false [2021-10-13 01:21:37,381 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14))))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))))) is different from false [2021-10-13 01:21:39,558 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) (not (= (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14)))))))) (_ bv0 1))))) is different from false [2021-10-13 01:21:51,336 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 01:21:51,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:21:51,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114962627] [2021-10-13 01:21:51,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114962627] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:51,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:51,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 11] imperfect sequences [] total 19 [2021-10-13 01:21:51,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879805591] [2021-10-13 01:21:51,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 01:21:51,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:21:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 01:21:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=230, Unknown=7, NotChecked=96, Total=380 [2021-10-13 01:21:51,339 INFO L87 Difference]: Start difference. First operand 200 states and 233 transitions. Second operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:21:53,615 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((gl_insert_~node~0.base (_ BitVec 32))) (= (select |c_#length| gl_insert_~node~0.base) (_ bv12 32))) (= |c_~#gl_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse2 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) (not (= (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14))))))))) (_ bv0 1))))) (= (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.offset|) (= |c_~#gl_list~0.offset| (_ bv0 32)) (= (_ bv8 32) (select |c_#length| |c_~#gl_list~0.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| |c_~#gl_list~0.base|)))) (let ((.cse4 (select |c_#length| (_ bv0 32)))) (or (= (_ bv12 32) .cse4) (= |c_~#gl_list~0.base| (_ bv0 32)) (= (_ bv2 32) .cse4) (= (_ bv0 1) (select |c_#valid| (_ bv0 32)))))) is different from false [2021-10-13 01:21:55,674 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#gl_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (= (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.offset|) (= |c_~#gl_list~0.offset| (_ bv0 32)) (= (_ bv8 32) (select |c_#length| |c_~#gl_list~0.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| |c_~#gl_list~0.base|)))) (let ((.cse0 (select |c_#length| (_ bv0 32)))) (or (= (_ bv12 32) .cse0) (= |c_~#gl_list~0.base| (_ bv0 32)) (= (_ bv2 32) .cse0) (= (_ bv0 1) (select |c_#valid| (_ bv0 32))))) (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14))))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse3 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse4) (bvadd (_ bv8 32) .cse4)))))))) is different from false [2021-10-13 01:22:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,027 INFO L93 Difference]: Finished difference Result 207 states and 233 transitions. [2021-10-13 01:22:04,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 01:22:04,028 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-10-13 01:22:04,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,030 INFO L225 Difference]: With dead ends: 207 [2021-10-13 01:22:04,030 INFO L226 Difference]: Without dead ends: 207 [2021-10-13 01:22:04,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 23245.0ms TimeCoverageRelationStatistics Valid=115, Invalid=496, Unknown=9, NotChecked=250, Total=870 [2021-10-13 01:22:04,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-13 01:22:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 200. [2021-10-13 01:22:04,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 116 states have (on average 1.6379310344827587) internal successors, (190), 163 states have internal predecessors, (190), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-13 01:22:04,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 232 transitions. [2021-10-13 01:22:04,040 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 232 transitions. Word has length 16 [2021-10-13 01:22:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,041 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 232 transitions. [2021-10-13 01:22:04,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 232 transitions. [2021-10-13 01:22:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:22:04,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,042 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 01:22:04,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:04,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:22:04,249 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __list_addErr2REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:22:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash -229018017, now seen corresponding path program 1 times [2021-10-13 01:22:04,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:22:04,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173179542] [2021-10-13 01:22:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:22:04,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:22:04,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:22:04,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 01:22:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:22:04,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:04,509 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 01:22:04,615 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 01:22:04,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:22:04,714 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 01:22:04,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:22:04,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173179542] [2021-10-13 01:22:04,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173179542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 01:22:04,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866010554] [2021-10-13 01:22:04,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:22:04,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:22:04,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:22:04,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:22:04,716 INFO L87 Difference]: Start difference. First operand 200 states and 232 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:05,423 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2021-10-13 01:22:05,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:22:05,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-13 01:22:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:05,426 INFO L225 Difference]: With dead ends: 205 [2021-10-13 01:22:05,426 INFO L226 Difference]: Without dead ends: 205 [2021-10-13 01:22:05,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:22:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-13 01:22:05,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2021-10-13 01:22:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 116 states have (on average 1.5948275862068966) internal successors, (185), 162 states have internal predecessors, (185), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-13 01:22:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 227 transitions. [2021-10-13 01:22:05,435 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 227 transitions. Word has length 17 [2021-10-13 01:22:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:05,436 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 227 transitions. [2021-10-13 01:22:05,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 227 transitions. [2021-10-13 01:22:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:22:05,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:05,437 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 01:22:05,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:05,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:22:05,649 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __list_addErr3REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:22:05,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash -229018016, now seen corresponding path program 1 times [2021-10-13 01:22:05,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:22:05,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749813334] [2021-10-13 01:22:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:05,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:22:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:22:05,651 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:22:05,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 01:22:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:22:05,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:05,916 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 01:22:06,101 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 01:22:06,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:22:06,537 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 01:22:06,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:22:06,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749813334] [2021-10-13 01:22:06,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749813334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:06,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:06,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 01:22:06,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124250390] [2021-10-13 01:22:06,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 01:22:06,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:22:06,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 01:22:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:22:06,540 INFO L87 Difference]: Start difference. First operand 199 states and 227 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:08,358 INFO L93 Difference]: Finished difference Result 203 states and 223 transitions. [2021-10-13 01:22:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:22:08,359 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-13 01:22:08,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:08,361 INFO L225 Difference]: With dead ends: 203 [2021-10-13 01:22:08,362 INFO L226 Difference]: Without dead ends: 203 [2021-10-13 01:22:08,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 443.1ms TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:22:08,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-13 01:22:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2021-10-13 01:22:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 116 states have (on average 1.5603448275862069) internal successors, (181), 162 states have internal predecessors, (181), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-13 01:22:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 223 transitions. [2021-10-13 01:22:08,371 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 223 transitions. Word has length 17 [2021-10-13 01:22:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:08,371 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 223 transitions. [2021-10-13 01:22:08,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:08,372 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 223 transitions. [2021-10-13 01:22:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:22:08,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:08,372 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 01:22:08,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:08,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:22:08,577 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __list_addErr6REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:22:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:08,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1042979966, now seen corresponding path program 1 times [2021-10-13 01:22:08,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:22:08,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940683170] [2021-10-13 01:22:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:08,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:22:08,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:22:08,582 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:22:08,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 01:22:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:22:08,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:08,928 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 01:22:08,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:22:09,002 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 01:22:09,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:22:09,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940683170] [2021-10-13 01:22:09,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940683170] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:09,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:09,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 01:22:09,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556472920] [2021-10-13 01:22:09,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:22:09,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:22:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:22:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:22:09,005 INFO L87 Difference]: Start difference. First operand 199 states and 223 transitions. Second operand has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:09,390 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2021-10-13 01:22:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:22:09,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-13 01:22:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:09,393 INFO L225 Difference]: With dead ends: 198 [2021-10-13 01:22:09,393 INFO L226 Difference]: Without dead ends: 198 [2021-10-13 01:22:09,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:22:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-13 01:22:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-10-13 01:22:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 116 states have (on average 1.5344827586206897) internal successors, (178), 161 states have internal predecessors, (178), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-13 01:22:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 220 transitions. [2021-10-13 01:22:09,402 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 220 transitions. Word has length 19 [2021-10-13 01:22:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:09,403 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 220 transitions. [2021-10-13 01:22:09,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 220 transitions. [2021-10-13 01:22:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:22:09,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:09,404 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 01:22:09,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-13 01:22:09,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:22:09,616 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __list_addErr7REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:22:09,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:09,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1042979965, now seen corresponding path program 1 times [2021-10-13 01:22:09,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:22:09,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764602828] [2021-10-13 01:22:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:09,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:22:09,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:22:09,618 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:22:09,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 01:22:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:09,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:22:09,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:10,121 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 01:22:10,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:22:10,374 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 01:22:10,586 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 01:22:10,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:22:10,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764602828] [2021-10-13 01:22:10,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764602828] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:10,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:10,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 01:22:10,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803245380] [2021-10-13 01:22:10,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 01:22:10,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:22:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 01:22:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:22:10,589 INFO L87 Difference]: Start difference. First operand 198 states and 220 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:12,489 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2021-10-13 01:22:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:22:12,490 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-13 01:22:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:12,492 INFO L225 Difference]: With dead ends: 199 [2021-10-13 01:22:12,492 INFO L226 Difference]: Without dead ends: 199 [2021-10-13 01:22:12,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 760.6ms TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:22:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-10-13 01:22:12,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2021-10-13 01:22:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 116 states have (on average 1.5086206896551724) internal successors, (175), 160 states have internal predecessors, (175), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-13 01:22:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 217 transitions. [2021-10-13 01:22:12,501 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 217 transitions. Word has length 19 [2021-10-13 01:22:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:12,502 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 217 transitions. [2021-10-13 01:22:12,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:12,502 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 217 transitions. [2021-10-13 01:22:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 01:22:12,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:12,503 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 01:22:12,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:12,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:22:12,718 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting list_emptyErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:22:12,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1130114392, now seen corresponding path program 1 times [2021-10-13 01:22:12,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:22:12,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953467014] [2021-10-13 01:22:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:12,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:22:12,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:22:12,720 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:22:12,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 01:22:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:12,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:22:12,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:13,208 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 01:22:13,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:22:13,559 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 01:22:13,560 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 01:22:13,590 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 01:22:13,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:22:13,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953467014] [2021-10-13 01:22:13,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953467014] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:13,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:13,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-10-13 01:22:13,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932157630] [2021-10-13 01:22:13,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:22:13,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:22:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:22:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:22:13,592 INFO L87 Difference]: Start difference. First operand 197 states and 217 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 01:22:14,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:14,512 INFO L93 Difference]: Finished difference Result 196 states and 215 transitions. [2021-10-13 01:22:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:22:14,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2021-10-13 01:22:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:14,515 INFO L225 Difference]: With dead ends: 196 [2021-10-13 01:22:14,515 INFO L226 Difference]: Without dead ends: 196 [2021-10-13 01:22:14,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:22:14,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-13 01:22:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-13 01:22:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 159 states have internal predecessors, (173), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-13 01:22:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 215 transitions. [2021-10-13 01:22:14,524 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 215 transitions. Word has length 34 [2021-10-13 01:22:14,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:14,524 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 215 transitions. [2021-10-13 01:22:14,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 01:22:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 215 transitions. [2021-10-13 01:22:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 01:22:14,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:14,526 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 01:22:14,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:14,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:22:14,738 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting list_emptyErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:22:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:14,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1130114391, now seen corresponding path program 1 times [2021-10-13 01:22:14,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:22:14,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824796610] [2021-10-13 01:22:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:14,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:22:14,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:22:14,740 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:22:14,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 01:22:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:15,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:22:15,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:15,394 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 01:22:15,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:22:15,777 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 01:22:16,364 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:22:16,364 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 01:22:16,547 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 01:22:16,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:22:16,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824796610] [2021-10-13 01:22:16,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824796610] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:16,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:16,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-10-13 01:22:16,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761520384] [2021-10-13 01:22:16,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 01:22:16,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:22:16,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 01:22:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:22:16,549 INFO L87 Difference]: Start difference. First operand 196 states and 215 transitions. Second operand has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-13 01:22:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:18,599 INFO L93 Difference]: Finished difference Result 195 states and 213 transitions. [2021-10-13 01:22:18,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:22:18,600 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 34 [2021-10-13 01:22:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:18,602 INFO L225 Difference]: With dead ends: 195 [2021-10-13 01:22:18,602 INFO L226 Difference]: Without dead ends: 195 [2021-10-13 01:22:18,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 758.7ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-13 01:22:18,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-13 01:22:18,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-10-13 01:22:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 116 states have (on average 1.4741379310344827) internal successors, (171), 158 states have internal predecessors, (171), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (21), 17 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-13 01:22:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 213 transitions. [2021-10-13 01:22:18,610 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 213 transitions. Word has length 34 [2021-10-13 01:22:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:18,610 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 213 transitions. [2021-10-13 01:22:18,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-13 01:22:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 213 transitions. [2021-10-13 01:22:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 01:22:18,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:18,612 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:18,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:18,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:22:18,815 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 60 more)] === [2021-10-13 01:22:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:18,815 INFO L82 PathProgramCache]: Analyzing trace with hash 853907176, now seen corresponding path program 1 times [2021-10-13 01:22:18,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:22:18,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364360884] [2021-10-13 01:22:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:18,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:22:18,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:22:18,817 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:22:18,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 01:22:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:19,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 01:22:19,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:19,290 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 01:22:19,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 01:22:19,907 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-10-13 01:22:19,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 60 [2021-10-13 01:22:20,104 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 01:22:20,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 83 treesize of output 34 [2021-10-13 01:22:20,423 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 64 treesize of output 52 [2021-10-13 01:22:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:20,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:22:35,482 WARN L838 $PredicateComparison]: unable to prove that (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_gl_insert_~node~0.base_30 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_gl_insert_~node~0.base_30)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~0.base_30 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_30 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_30) gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))))) (_ bv1 1))))) is different from false [2021-10-13 01:22:36,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:22:36,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364360884] [2021-10-13 01:22:36,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 01:22:36,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1590558714] [2021-10-13 01:22:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:36,290 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 01:22:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/cvc4 [2021-10-13 01:22:36,291 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 01:22:36,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-13 01:22:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:36,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 01:22:36,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:36,997 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 01:22:37,068 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 01:22:37,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 01:22:38,404 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-10-13 01:22:38,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 36 [2021-10-13 01:22:38,667 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 01:22:38,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 86 treesize of output 37 [2021-10-13 01:22:39,208 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 46 treesize of output 34 [2021-10-13 01:22:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:40,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:22:49,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:22:49,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 14218 treesize of output 13816 [2021-10-13 01:22:50,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 01:22:50,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220626310] [2021-10-13 01:22:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:50,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:50,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:50,393 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:22:50,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 01:22:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:50,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 01:22:50,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:50,926 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 01:22:50,926 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 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-13 01:22:51,396 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 01:22:51,544 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 01:22:51,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 01:22:52,002 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-13 01:22:52,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-10-13 01:22:52,168 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-10-13 01:22:52,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 61 [2021-10-13 01:22:52,342 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 01:22:52,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 84 treesize of output 35 [2021-10-13 01:22:52,570 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 64 treesize of output 52 [2021-10-13 01:22:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:52,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:23:07,389 WARN L838 $PredicateComparison]: unable to prove that (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_gl_insert_~node~0.base_41 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~0.base_41 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_41 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_41) gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_gl_insert_~node~0.base_41)))))) is different from false [2021-10-13 01:23:09,436 WARN L838 $PredicateComparison]: unable to prove that (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_gl_insert_~node~0.base_41 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_gl_insert_~node~0.base_41)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~0.base_41 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_41 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_41) gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))))) (_ bv1 1))))) is different from false [2021-10-13 01:23:34,020 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 46185 treesize of output 46057 [2021-10-13 01:23:34,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 01:23:34,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:23:34,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 01:23:34,142 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-13 01:23:34,142 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 01:23:34,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr2REQUIRES_VIOLATION [2021-10-13 01:23:34,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr3REQUIRES_VIOLATION [2021-10-13 01:23:34,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr2REQUIRES_VIOLATION [2021-10-13 01:23:34,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr3REQUIRES_VIOLATION [2021-10-13 01:23:34,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr4REQUIRES_VIOLATION [2021-10-13 01:23:34,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr5REQUIRES_VIOLATION [2021-10-13 01:23:34,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:23:34,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:23:34,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:23:34,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr2REQUIRES_VIOLATION [2021-10-13 01:23:34,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr3REQUIRES_VIOLATION [2021-10-13 01:23:34,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr4REQUIRES_VIOLATION [2021-10-13 01:23:34,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr5REQUIRES_VIOLATION [2021-10-13 01:23:34,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr6REQUIRES_VIOLATION [2021-10-13 01:23:34,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr7REQUIRES_VIOLATION [2021-10-13 01:23:34,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:23:34,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr2REQUIRES_VIOLATION [2021-10-13 01:23:34,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr3REQUIRES_VIOLATION [2021-10-13 01:23:34,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr4REQUIRES_VIOLATION [2021-10-13 01:23:34,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr5REQUIRES_VIOLATION [2021-10-13 01:23:34,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr6REQUIRES_VIOLATION [2021-10-13 01:23:34,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr7REQUIRES_VIOLATION [2021-10-13 01:23:34,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,156 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,156 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr2REQUIRES_VIOLATION [2021-10-13 01:23:34,156 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr3REQUIRES_VIOLATION [2021-10-13 01:23:34,156 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,156 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr2REQUIRES_VIOLATION [2021-10-13 01:23:34,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr3REQUIRES_VIOLATION [2021-10-13 01:23:34,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr4REQUIRES_VIOLATION [2021-10-13 01:23:34,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr5REQUIRES_VIOLATION [2021-10-13 01:23:34,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr6REQUIRES_VIOLATION [2021-10-13 01:23:34,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr7REQUIRES_VIOLATION [2021-10-13 01:23:34,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr8REQUIRES_VIOLATION [2021-10-13 01:23:34,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr9REQUIRES_VIOLATION [2021-10-13 01:23:34,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr10REQUIRES_VIOLATION [2021-10-13 01:23:34,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr11REQUIRES_VIOLATION [2021-10-13 01:23:34,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr12REQUIRES_VIOLATION [2021-10-13 01:23:34,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr13REQUIRES_VIOLATION [2021-10-13 01:23:34,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr14REQUIRES_VIOLATION [2021-10-13 01:23:34,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sortErr15REQUIRES_VIOLATION [2021-10-13 01:23:34,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr0REQUIRES_VIOLATION [2021-10-13 01:23:34,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr1REQUIRES_VIOLATION [2021-10-13 01:23:34,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr2REQUIRES_VIOLATION [2021-10-13 01:23:34,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr3REQUIRES_VIOLATION [2021-10-13 01:23:34,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr4REQUIRES_VIOLATION [2021-10-13 01:23:34,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr5REQUIRES_VIOLATION [2021-10-13 01:23:34,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-13 01:23:34,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-13 01:23:34,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-13 01:23:34,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:23:34,771 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:23:34,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:23:34 BoogieIcfgContainer [2021-10-13 01:23:34,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:23:34,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:23:34,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:23:34,787 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:23:34,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:20:22" (3/4) ... [2021-10-13 01:23:34,789 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:23:34,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:23:34,791 INFO L168 Benchmark]: Toolchain (without parser) took 194379.51 ms. Allocated memory was 58.7 MB in the beginning and 157.3 MB in the end (delta: 98.6 MB). Free memory was 34.8 MB in the beginning and 37.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 94.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:23:34,791 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:23:34,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.02 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 34.5 MB in the beginning and 40.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:23:34,792 INFO L168 Benchmark]: Boogie Preprocessor took 83.90 ms. Allocated memory is still 71.3 MB. Free memory was 40.8 MB in the beginning and 37.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:23:34,793 INFO L168 Benchmark]: RCFGBuilder took 1166.45 ms. Allocated memory is still 71.3 MB. Free memory was 37.1 MB in the beginning and 36.2 MB in the end (delta: 855.5 kB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:23:34,794 INFO L168 Benchmark]: TraceAbstraction took 192416.57 ms. Allocated memory was 71.3 MB in the beginning and 157.3 MB in the end (delta: 86.0 MB). Free memory was 35.6 MB in the beginning and 37.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 89.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:23:34,794 INFO L168 Benchmark]: Witness Printer took 3.52 ms. Allocated memory is still 157.3 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:23:34,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.02 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 34.5 MB in the beginning and 40.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.90 ms. Allocated memory is still 71.3 MB. Free memory was 40.8 MB in the beginning and 37.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1166.45 ms. Allocated memory is still 71.3 MB. Free memory was 37.1 MB in the beginning and 36.2 MB in the end (delta: 855.5 kB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 192416.57 ms. Allocated memory was 71.3 MB in the beginning and 157.3 MB in the end (delta: 86.0 MB). Free memory was 35.6 MB in the beginning and 37.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 89.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.52 ms. Allocated memory is still 157.3 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L564] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L625] CALL gl_read() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new [L536] new->next = next [L537] new->prev = prev [L538] prev->next = new [L547] RET __list_add(new, head, head->next) [L571] RET list_add(&node->linkage, &gl_list) [L576] RET gl_insert(__VERIFIER_nondet_int()) [L578] COND TRUE __VERIFIER_nondet_int() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: 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 all allocated memory was freed Unable to prove that all allocated memory was freed 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: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: 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: 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: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: 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 22 procedures, 206 locations, 64 error locations. Started 1 CEGAR loops. OverallTime: 192351.4ms, OverallIterations: 14, TraceHistogramMax: 2, EmptinessCheckTime: 22.2ms, AutomataDifference: 40971.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1760 SDtfs, 1707 SDslu, 6162 SDs, 0 SdLazy, 4266 SolverSat, 278 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 23590.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 495 GetRequests, 319 SyntacticMatches, 31 SemanticMatches, 145 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 74485.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=6, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 187.0ms AutomataMinimizationTime, 13 MinimizatonAttempts, 83 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 181.0ms SsaConstructionTime, 722.9ms SatisfiabilityAnalysisTime, 69326.4ms InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 430 ConstructedInterpolants, 51 QuantifiedInterpolants, 4942 SizeOfPredicates, 117 NumberOfNonLiveVariables, 1779 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:23:34,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e78f432-ef73-4617-8754-692821945446/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...