./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0134.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD --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 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c ................................................................................................................................... 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_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD --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 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:04:02,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:04:02,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:04:02,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:04:02,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:04:02,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:04:02,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:04:02,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:04:02,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:04:02,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:04:02,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:04:02,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:04:02,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:04:02,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:04:02,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:04:02,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:04:02,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:04:02,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:04:02,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:04:02,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:04:02,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:04:02,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:04:02,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:04:02,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:04:02,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:04:02,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:04:02,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:04:02,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:04:02,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:04:02,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:04:02,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:04:02,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:04:02,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:04:02,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:04:02,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:04:02,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:04:02,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:04:02,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:04:02,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:04:02,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:04:02,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:04:02,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:04:02,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:04:02,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:04:02,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:04:02,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:04:02,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:04:02,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:04:02,680 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:04:02,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:04:02,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:04:02,681 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:04:02,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:04:02,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:04:02,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:04:02,682 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:04:02,682 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:04:02,683 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:04:02,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:04:02,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:04:02,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:04:02,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:04:02,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:04:02,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:04:02,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:04:02,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:04:02,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:04:02,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:04:02,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:04:02,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:04:02,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:04:02,687 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_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-10-28 23:04:03,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:04:03,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:04:03,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:04:03,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:04:03,043 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:04:03,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety/test-0134.i [2021-10-28 23:04:03,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data/1124fda32/7a372ba66f2541a181c6fc21873bd672/FLAG23ff3c8fb [2021-10-28 23:04:03,808 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:04:03,809 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/sv-benchmarks/c/memsafety/test-0134.i [2021-10-28 23:04:03,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data/1124fda32/7a372ba66f2541a181c6fc21873bd672/FLAG23ff3c8fb [2021-10-28 23:04:04,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data/1124fda32/7a372ba66f2541a181c6fc21873bd672 [2021-10-28 23:04:04,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:04:04,067 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:04:04,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:04:04,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:04:04,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:04:04,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:04:04" (1/1) ... [2021-10-28 23:04:04,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5cc9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:04, skipping insertion in model container [2021-10-28 23:04:04,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:04:04" (1/1) ... [2021-10-28 23:04:04,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:04:04,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:04:04,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:04:04,591 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) [2021-10-28 23:04:04,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7380be61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:04, skipping insertion in model container [2021-10-28 23:04:04,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:04:04,593 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 23:04:04,596 INFO L168 Benchmark]: Toolchain (without parser) took 527.22 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 70.9 MB in the end (delta: -1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:04:04,598 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:04:04,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.18 ms. Allocated memory is still 98.6 MB. Free memory was 69.4 MB in the beginning and 70.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:04:04,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.18 ms. Allocated memory is still 98.6 MB. Free memory was 69.4 MB in the beginning and 70.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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-b2eff8b [2021-10-28 23:04:07,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:04:07,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:04:07,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:04:07,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:04:07,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:04:07,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:04:07,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:04:07,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:04:07,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:04:07,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:04:07,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:04:07,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:04:07,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:04:07,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:04:07,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:04:07,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:04:07,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:04:07,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:04:07,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:04:07,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:04:07,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:04:07,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:04:07,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:04:07,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:04:07,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:04:07,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:04:07,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:04:07,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:04:07,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:04:07,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:04:07,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:04:07,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:04:07,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:04:07,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:04:07,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:04:07,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:04:07,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:04:07,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:04:07,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:04:07,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:04:07,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:04:07,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:04:07,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:04:07,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:04:07,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:04:07,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:04:07,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:04:07,638 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:04:07,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:04:07,639 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:04:07,640 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:04:07,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:04:07,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:04:07,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:04:07,642 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:04:07,643 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:04:07,643 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:04:07,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:04:07,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:04:07,644 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:04:07,644 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:04:07,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:04:07,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:04:07,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:04:07,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:04:07,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:04:07,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:04:07,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:04:07,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:04:07,647 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:04:07,647 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:04:07,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:04:07,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:04:07,648 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_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-10-28 23:04:08,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:04:08,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:04:08,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:04:08,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:04:08,177 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:04:08,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety/test-0134.i [2021-10-28 23:04:08,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data/0ede12b9c/3256cf043b0346848079810e11b9c53e/FLAGbfc82416e [2021-10-28 23:04:09,075 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:04:09,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/sv-benchmarks/c/memsafety/test-0134.i [2021-10-28 23:04:09,093 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data/0ede12b9c/3256cf043b0346848079810e11b9c53e/FLAGbfc82416e [2021-10-28 23:04:09,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/data/0ede12b9c/3256cf043b0346848079810e11b9c53e [2021-10-28 23:04:09,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:04:09,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:04:09,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:04:09,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:04:09,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:04:09,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:04:09" (1/1) ... [2021-10-28 23:04:09,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ca777d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:09, skipping insertion in model container [2021-10-28 23:04:09,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:04:09" (1/1) ... [2021-10-28 23:04:09,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:04:09,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:04:09,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:04:09,919 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 23:04:09,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:04:10,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:04:10,041 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:04:10,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:04:10,164 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:04:10,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10 WrapperNode [2021-10-28 23:04:10,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:04:10,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:04:10,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:04:10,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:04:10,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (1/1) ... [2021-10-28 23:04:10,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (1/1) ... [2021-10-28 23:04:10,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (1/1) ... [2021-10-28 23:04:10,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (1/1) ... [2021-10-28 23:04:10,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (1/1) ... [2021-10-28 23:04:10,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (1/1) ... [2021-10-28 23:04:10,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (1/1) ... [2021-10-28 23:04:10,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:04:10,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:04:10,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:04:10,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:04:10,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (1/1) ... [2021-10-28 23:04:10,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:04:10,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:04:10,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:04:10,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:04:10,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:04:10,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:04:10,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:04:10,353 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:04:10,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:04:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:04:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:04:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:04:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:04:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-10-28 23:04:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-10-28 23:04:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-10-28 23:04:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-10-28 23:04:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-10-28 23:04:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2021-10-28 23:04:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2021-10-28 23:04:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2021-10-28 23:04:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2021-10-28 23:04:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-10-28 23:04:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_seek_max [2021-10-28 23:04:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2021-10-28 23:04:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:04:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:04:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:04:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:04:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:04:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:04:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:04:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:04:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:04:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:04:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:04:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:04:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:04:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:04:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:04:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:04:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:04:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:04:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:04:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:04:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:04:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:04:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:04:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:04:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:04:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:04:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:04:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:04:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:04:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:04:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:04:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:04:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:04:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:04:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:04:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:04:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:04:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:04:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:04:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:04:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:04:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:04:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:04:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:04:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:04:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:04:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:04:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:04:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:04:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:04:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:04:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:04:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:04:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:04:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:04:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:04:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:04:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:04:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:04:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:04:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:04:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:04:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:04:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:04:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:04:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:04:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:04:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:04:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:04:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:04:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:04:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:04:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:04:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:04:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:04:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:04:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:04:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:04:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:04:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:04:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:04:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:04:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:04:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:04:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:04:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:04:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:04:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:04:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:04:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:04:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:04:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:04:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:04:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:04:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:04:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:04:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:04:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:04:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:04:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:04:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:04:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:04:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:04:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:04:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:04:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:04:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:04:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:04:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:04:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:04:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:04:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:04:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:04:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:04:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-10-28 23:04:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:04:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-10-28 23:04:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:04:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-10-28 23:04:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-10-28 23:04:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-10-28 23:04:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2021-10-28 23:04:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2021-10-28 23:04:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:04:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:04:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2021-10-28 23:04:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2021-10-28 23:04:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:04:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-10-28 23:04:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:04:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure gl_seek_max [2021-10-28 23:04:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2021-10-28 23:04:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 23:04:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:04:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:04:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:04:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:04:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:04:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:04:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:04:11,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:04:11,600 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:04:11,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:04:11 BoogieIcfgContainer [2021-10-28 23:04:11,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:04:11,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:04:11,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:04:11,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:04:11,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:04:09" (1/3) ... [2021-10-28 23:04:11,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53991b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:04:11, skipping insertion in model container [2021-10-28 23:04:11,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:10" (2/3) ... [2021-10-28 23:04:11,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53991b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:04:11, skipping insertion in model container [2021-10-28 23:04:11,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:04:11" (3/3) ... [2021-10-28 23:04:11,638 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0134.i [2021-10-28 23:04:11,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:04:11,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2021-10-28 23:04:11,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:04:11,743 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:04:11,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2021-10-28 23:04:11,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 125 states have internal predecessors, (135), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-28 23:04:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:04:11,807 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:04:11,808 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:04:11,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gl_insertErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:04:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:04:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1666329584, now seen corresponding path program 1 times [2021-10-28 23:04:11,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:04:11,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333337215] [2021-10-28 23:04:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:04:11,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:04:11,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:04:11,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:04:11,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:04:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:04:12,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:04:12,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:04:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:12,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:04:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:12,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:04:12,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333337215] [2021-10-28 23:04:12,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333337215] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:04:12,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:04:12,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:04:12,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164276265] [2021-10-28 23:04:12,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:04:12,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:04:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:04:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:04:12,281 INFO L87 Difference]: Start difference. First operand has 157 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 125 states have internal predecessors, (135), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) 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) [2021-10-28 23:04:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:04:12,332 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2021-10-28 23:04:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:04:12,334 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 [2021-10-28 23:04:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:04:12,353 INFO L225 Difference]: With dead ends: 157 [2021-10-28 23:04:12,354 INFO L226 Difference]: Without dead ends: 154 [2021-10-28 23:04:12,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:04:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-28 23:04:12,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-28 23:04:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 123 states have internal predecessors, (128), 19 states have call successors, (19), 14 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 23:04:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2021-10-28 23:04:12,451 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 10 [2021-10-28 23:04:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:04:12,452 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2021-10-28 23:04:12,452 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) [2021-10-28 23:04:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2021-10-28 23:04:12,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:04:12,453 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:04:12,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:04:12,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:04:12,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:04:12,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gl_insertErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:04:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:04:12,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1666329522, now seen corresponding path program 1 times [2021-10-28 23:04:12,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:04:12,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385985541] [2021-10-28 23:04:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:04:12,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:04:12,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:04:12,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:04:12,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:04:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:04:12,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:04:12,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:04:12,995 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 [2021-10-28 23:04:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:13,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:04:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:13,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:04:13,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385985541] [2021-10-28 23:04:13,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385985541] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:04:13,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:04:13,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:04:13,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144893076] [2021-10-28 23:04:13,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:04:13,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:04:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:04:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:04:13,086 INFO L87 Difference]: Start difference. First operand 154 states and 165 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) [2021-10-28 23:04:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:04:13,372 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2021-10-28 23:04:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:04:13,376 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 [2021-10-28 23:04:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:04:13,378 INFO L225 Difference]: With dead ends: 153 [2021-10-28 23:04:13,378 INFO L226 Difference]: Without dead ends: 153 [2021-10-28 23:04:13,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:04:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-28 23:04:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-10-28 23:04:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 122 states have internal predecessors, (127), 19 states have call successors, (19), 14 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 23:04:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2021-10-28 23:04:13,401 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 10 [2021-10-28 23:04:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:04:13,401 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2021-10-28 23:04:13,402 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) [2021-10-28 23:04:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2021-10-28 23:04:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:04:13,403 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:04:13,403 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:04:13,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:04:13,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:04:13,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gl_insertErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:04:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:04:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1666329521, now seen corresponding path program 1 times [2021-10-28 23:04:13,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:04:13,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659594279] [2021-10-28 23:04:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:04:13,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:04:13,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:04:13,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:04:13,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:04:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:04:13,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:04:13,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:04:13,842 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 [2021-10-28 23:04:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:13,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:04:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:13,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:04:13,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659594279] [2021-10-28 23:04:13,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659594279] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:04:13,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:04:13,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 23:04:13,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952464238] [2021-10-28 23:04:13,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:04:13,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:04:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:04:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:04:13,993 INFO L87 Difference]: Start difference. First operand 153 states and 164 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) [2021-10-28 23:04:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:04:14,485 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2021-10-28 23:04:14,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:04:14,487 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 [2021-10-28 23:04:14,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:04:14,489 INFO L225 Difference]: With dead ends: 152 [2021-10-28 23:04:14,490 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 23:04:14,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:04:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 23:04:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-28 23:04:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 121 states have internal predecessors, (126), 19 states have call successors, (19), 14 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 23:04:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2021-10-28 23:04:14,523 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 10 [2021-10-28 23:04:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:04:14,523 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2021-10-28 23:04:14,524 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) [2021-10-28 23:04:14,524 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2021-10-28 23:04:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:04:14,525 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:04:14,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:04:14,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:04:14,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:04:14,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:04:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:04:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -390579196, now seen corresponding path program 1 times [2021-10-28 23:04:14,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:04:14,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078675152] [2021-10-28 23:04:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:04:14,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:04:14,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:04:14,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:04:14,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:04:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:04:15,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:04:15,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:04:15,107 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-28 23:04:15,107 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 [2021-10-28 23:04:15,406 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 23:04:15,407 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 22 treesize of output 29 [2021-10-28 23:04:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:15,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:04:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:32,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:04:32,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078675152] [2021-10-28 23:04:32,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078675152] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:04:32,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:04:32,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-28 23:04:32,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134735535] [2021-10-28 23:04:32,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:04:32,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:04:32,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:04:32,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-10-28 23:04:32,167 INFO L87 Difference]: Start difference. First operand 152 states and 163 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) [2021-10-28 23:04:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:04:34,114 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2021-10-28 23:04:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:04:34,114 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 [2021-10-28 23:04:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:04:34,118 INFO L225 Difference]: With dead ends: 182 [2021-10-28 23:04:34,118 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 23:04:34,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=45, Invalid=85, Unknown=2, NotChecked=0, Total=132 [2021-10-28 23:04:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 23:04:34,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2021-10-28 23:04:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 84 states have (on average 1.630952380952381) internal successors, (137), 130 states have internal predecessors, (137), 21 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (22), 20 states have call predecessors, (22), 20 states have call successors, (22) [2021-10-28 23:04:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 180 transitions. [2021-10-28 23:04:34,136 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 180 transitions. Word has length 13 [2021-10-28 23:04:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:04:34,137 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 180 transitions. [2021-10-28 23:04:34,137 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) [2021-10-28 23:04:34,137 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 180 transitions. [2021-10-28 23:04:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:04:34,138 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:04:34,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:04:34,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:04:34,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:04:34,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:04:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:04:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash -390579195, now seen corresponding path program 1 times [2021-10-28 23:04:34,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:04:34,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51241203] [2021-10-28 23:04:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:04:34,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:04:34,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:04:34,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:04:34,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:04:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:04:34,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 23:04:34,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:04:34,673 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-28 23:04:34,673 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 [2021-10-28 23:04:34,766 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-28 23:04:34,766 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 [2021-10-28 23:04:35,334 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-28 23:04:35,334 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 48 treesize of output 55 [2021-10-28 23:04:35,377 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-28 23:04:35,378 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 52 treesize of output 68 [2021-10-28 23:04:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:35,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:04:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:45,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:04:45,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51241203] [2021-10-28 23:04:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51241203] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:04:45,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:04:45,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 23:04:45,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967825866] [2021-10-28 23:04:45,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:04:45,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:04:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:04:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-10-28 23:04:45,683 INFO L87 Difference]: Start difference. First operand 165 states and 180 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) [2021-10-28 23:04:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:04:54,723 INFO L93 Difference]: Finished difference Result 220 states and 229 transitions. [2021-10-28 23:04:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:04:54,724 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 [2021-10-28 23:04:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:04:54,726 INFO L225 Difference]: With dead ends: 220 [2021-10-28 23:04:54,727 INFO L226 Difference]: Without dead ends: 220 [2021-10-28 23:04:54,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=67, Invalid=141, Unknown=2, NotChecked=0, Total=210 [2021-10-28 23:04:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-28 23:04:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 181. [2021-10-28 23:04:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 101 states have (on average 1.6336633663366336) internal successors, (165), 144 states have internal predecessors, (165), 21 states have call successors, (21), 18 states have call predecessors, (21), 18 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2021-10-28 23:04:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 207 transitions. [2021-10-28 23:04:54,741 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 207 transitions. Word has length 13 [2021-10-28 23:04:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:04:54,742 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 207 transitions. [2021-10-28 23:04:54,742 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) [2021-10-28 23:04:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 207 transitions. [2021-10-28 23:04:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:04:54,743 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:04:54,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:04:54,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:04:54,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:04:54,953 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:04:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:04:54,953 INFO L85 PathProgramCache]: Analyzing trace with hash -678212586, now seen corresponding path program 1 times [2021-10-28 23:04:54,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:04:54,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719075149] [2021-10-28 23:04:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:04:54,954 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:04:54,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:04:54,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:04:54,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:04:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:04:55,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 23:04:55,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:04:55,328 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-28 23:04:55,329 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 [2021-10-28 23:04:55,733 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:04:55,734 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 18 treesize of output 18 [2021-10-28 23:04:55,890 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-28 23:04:55,891 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 [2021-10-28 23:04:56,001 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 [2021-10-28 23:04:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:56,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:04:56,214 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-28 23:04:56,215 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 [2021-10-28 23:05:14,449 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 [2021-10-28 23:05:16,503 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 [2021-10-28 23:05:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:16,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:05:16,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719075149] [2021-10-28 23:05:16,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719075149] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:16,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:16,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 11] imperfect sequences [] total 13 [2021-10-28 23:05:16,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386846641] [2021-10-28 23:05:16,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:05:16,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:05:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:05:16,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=8, NotChecked=42, Total=182 [2021-10-28 23:05:16,812 INFO L87 Difference]: Start difference. First operand 181 states and 207 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) [2021-10-28 23:05:20,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:20,550 INFO L93 Difference]: Finished difference Result 204 states and 232 transitions. [2021-10-28 23:05:20,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:05:20,551 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 [2021-10-28 23:05:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:20,553 INFO L225 Difference]: With dead ends: 204 [2021-10-28 23:05:20,553 INFO L226 Difference]: Without dead ends: 204 [2021-10-28 23:05:20,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=80, Invalid=261, Unknown=9, NotChecked=70, Total=420 [2021-10-28 23:05:20,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-28 23:05:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 196. [2021-10-28 23:05:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 112 states have (on average 1.6339285714285714) internal successors, (183), 155 states have internal predecessors, (183), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-10-28 23:05:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 231 transitions. [2021-10-28 23:05:20,571 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 231 transitions. Word has length 16 [2021-10-28 23:05:20,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:20,571 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 231 transitions. [2021-10-28 23:05:20,572 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) [2021-10-28 23:05:20,572 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 231 transitions. [2021-10-28 23:05:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:05:20,573 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:20,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:20,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:20,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:05:20,789 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:05:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash -678212585, now seen corresponding path program 1 times [2021-10-28 23:05:20,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:05:20,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13373571] [2021-10-28 23:05:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:20,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:05:20,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:05:20,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:05:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:21,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-28 23:05:21,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:21,283 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-28 23:05:21,283 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 [2021-10-28 23:05:21,365 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-28 23:05:21,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-28 23:05:22,193 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-28 23:05:22,194 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 [2021-10-28 23:05:22,243 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-28 23:05:22,243 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 [2021-10-28 23:05:22,961 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-28 23:05:22,961 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 [2021-10-28 23:05:23,034 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-28 23:05:23,035 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 [2021-10-28 23:05:23,320 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 [2021-10-28 23:05:23,326 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 [2021-10-28 23:05:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:23,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:05:42,957 WARN L207 SmtUtils]: Spent 6.31 s on a formula simplification that was a NOOP. DAG size: 47 [2021-10-28 23:05:58,522 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 [2021-10-28 23:06:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:12,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:06:12,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13373571] [2021-10-28 23:06:12,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13373571] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:06:12,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:06:12,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 18 [2021-10-28 23:06:12,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68488749] [2021-10-28 23:06:12,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:06:12,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:06:12,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:06:12,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=255, Unknown=8, NotChecked=32, Total=342 [2021-10-28 23:06:12,997 INFO L87 Difference]: Start difference. First operand 196 states and 231 transitions. Second operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:06:38,188 WARN L207 SmtUtils]: Spent 6.25 s on a formula simplification. DAG size of input: 91 DAG size of output: 37 [2021-10-28 23:06:42,905 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse1 (bvadd .cse0 (_ bv8 32)))) (and (exists ((gl_insert_~node~0.base (_ BitVec 32))) (= (select |c_#length| gl_insert_~node~0.base) (_ bv12 32))) (= (_ bv8 32) (select |c_#length| |c___list_add_#in~next.base|)) (= (_ bv0 32) |c___list_add_#in~next.offset|) (= c___list_add_~next.offset (_ bv0 32)) (= (_ bv8 32) (select |c_#length| c___list_add_~next.base)) (bvule (bvadd (_ bv4 32) .cse0) .cse1) (bvule .cse1 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (forall ((v_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_14))))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse2 (bvadd gl_insert_~node~0.offset (_ bv1 32))) (.cse3 (bvadd (_ bv2 32) gl_insert_~node~0.offset)) (.cse4 (bvadd (_ bv3 32) gl_insert_~node~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_9) .cse2 v_DerPreprocessor_10) .cse3 v_DerPreprocessor_11) .cse4 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| v_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_14) gl_insert_~node~0.offset v_DerPreprocessor_5) .cse2 v_DerPreprocessor_6) .cse3 v_DerPreprocessor_7) .cse4 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse5 (select (select (store |c_#memory_$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) .cse5) (bvadd (_ bv8 32) .cse5)))))))))) is different from false [2021-10-28 23:06:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:51,612 INFO L93 Difference]: Finished difference Result 203 states and 231 transitions. [2021-10-28 23:06:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:06:51,617 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 8 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 [2021-10-28 23:06:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:06:51,619 INFO L225 Difference]: With dead ends: 203 [2021-10-28 23:06:51,619 INFO L226 Difference]: Without dead ends: 203 [2021-10-28 23:06:51,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 75.4s TimeCoverageRelationStatistics Valid=135, Invalid=507, Unknown=16, NotChecked=98, Total=756 [2021-10-28 23:06:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-28 23:06:51,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2021-10-28 23:06:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 112 states have (on average 1.625) internal successors, (182), 155 states have internal predecessors, (182), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-10-28 23:06:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 230 transitions. [2021-10-28 23:06:51,635 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 230 transitions. Word has length 16 [2021-10-28 23:06:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:06:51,636 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 230 transitions. [2021-10-28 23:06:51,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:06:51,636 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 230 transitions. [2021-10-28 23:06:51,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:06:51,637 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:06:51,637 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:51,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:06:51,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:06:51,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __list_addErr2REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:06:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash 450246382, now seen corresponding path program 1 times [2021-10-28 23:06:51,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:06:51,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132641198] [2021-10-28 23:06:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:51,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:06:51,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:06:51,849 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:06:51,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:06:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:52,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:06:52,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:52,124 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 [2021-10-28 23:06:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:52,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:06:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:52,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:06:52,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132641198] [2021-10-28 23:06:52,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132641198] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:06:52,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:06:52,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 23:06:52,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194210039] [2021-10-28 23:06:52,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:06:52,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:06:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:06:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:06:52,375 INFO L87 Difference]: Start difference. First operand 196 states and 230 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) [2021-10-28 23:06:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:53,210 INFO L93 Difference]: Finished difference Result 201 states and 225 transitions. [2021-10-28 23:06:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:06:53,210 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 [2021-10-28 23:06:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:06:53,212 INFO L225 Difference]: With dead ends: 201 [2021-10-28 23:06:53,213 INFO L226 Difference]: Without dead ends: 201 [2021-10-28 23:06:53,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:06:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-28 23:06:53,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2021-10-28 23:06:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 112 states have (on average 1.5803571428571428) internal successors, (177), 154 states have internal predecessors, (177), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-10-28 23:06:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 225 transitions. [2021-10-28 23:06:53,225 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 225 transitions. Word has length 17 [2021-10-28 23:06:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:06:53,225 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 225 transitions. [2021-10-28 23:06:53,225 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) [2021-10-28 23:06:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 225 transitions. [2021-10-28 23:06:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:06:53,226 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:06:53,226 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:53,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:06:53,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:06:53,440 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __list_addErr3REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:06:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash 450246383, now seen corresponding path program 1 times [2021-10-28 23:06:53,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:06:53,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101824109] [2021-10-28 23:06:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:53,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:06:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:06:53,443 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:06:53,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:06:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:53,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:06:53,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:53,761 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 [2021-10-28 23:06:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:53,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:06:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:54,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:06:54,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101824109] [2021-10-28 23:06:54,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101824109] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:06:54,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:06:54,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-28 23:06:54,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356444287] [2021-10-28 23:06:54,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:06:54,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:06:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:06:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:06:54,531 INFO L87 Difference]: Start difference. First operand 195 states and 225 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) [2021-10-28 23:06:56,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:56,448 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2021-10-28 23:06:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:06:56,450 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 [2021-10-28 23:06:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:06:56,452 INFO L225 Difference]: With dead ends: 199 [2021-10-28 23:06:56,452 INFO L226 Difference]: Without dead ends: 199 [2021-10-28 23:06:56,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:06:56,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-10-28 23:06:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2021-10-28 23:06:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 112 states have (on average 1.5446428571428572) internal successors, (173), 154 states have internal predecessors, (173), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-10-28 23:06:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 221 transitions. [2021-10-28 23:06:56,467 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 221 transitions. Word has length 17 [2021-10-28 23:06:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:06:56,467 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 221 transitions. [2021-10-28 23:06:56,468 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) [2021-10-28 23:06:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 221 transitions. [2021-10-28 23:06:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:06:56,469 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:06:56,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:56,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:06:56,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:06:56,678 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __list_addErr6REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:06:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1104921519, now seen corresponding path program 1 times [2021-10-28 23:06:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:06:56,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664639679] [2021-10-28 23:06:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:56,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:06:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:06:56,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:06:56,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 23:06:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:57,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:06:57,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:57,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:06:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:57,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:06:57,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664639679] [2021-10-28 23:06:57,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664639679] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:06:57,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:06:57,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:06:57,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217553135] [2021-10-28 23:06:57,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:06:57,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:06:57,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:06:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:06:57,250 INFO L87 Difference]: Start difference. First operand 195 states and 221 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) [2021-10-28 23:06:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:57,761 INFO L93 Difference]: Finished difference Result 194 states and 218 transitions. [2021-10-28 23:06:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:06:57,762 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 [2021-10-28 23:06:57,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:06:57,764 INFO L225 Difference]: With dead ends: 194 [2021-10-28 23:06:57,765 INFO L226 Difference]: Without dead ends: 194 [2021-10-28 23:06:57,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:06:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-28 23:06:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-10-28 23:06:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 112 states have (on average 1.5178571428571428) internal successors, (170), 153 states have internal predecessors, (170), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-10-28 23:06:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 218 transitions. [2021-10-28 23:06:57,776 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 218 transitions. Word has length 19 [2021-10-28 23:06:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:06:57,777 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 218 transitions. [2021-10-28 23:06:57,777 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) [2021-10-28 23:06:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 218 transitions. [2021-10-28 23:06:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:06:57,778 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:06:57,778 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:57,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:06:57,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:06:57,993 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __list_addErr7REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:06:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:57,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1104921518, now seen corresponding path program 1 times [2021-10-28 23:06:57,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:06:57,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507002779] [2021-10-28 23:06:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:57,994 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:06:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:06:57,995 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:06:57,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 23:06:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:58,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:06:58,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:58,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:06:59,006 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 [2021-10-28 23:06:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:59,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:06:59,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507002779] [2021-10-28 23:06:59,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507002779] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:06:59,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:06:59,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-28 23:06:59,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434218672] [2021-10-28 23:06:59,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:06:59,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:06:59,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:06:59,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:06:59,306 INFO L87 Difference]: Start difference. First operand 194 states and 218 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) [2021-10-28 23:07:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:01,630 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2021-10-28 23:07:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:07:01,631 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 [2021-10-28 23:07:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:01,633 INFO L225 Difference]: With dead ends: 195 [2021-10-28 23:07:01,633 INFO L226 Difference]: Without dead ends: 195 [2021-10-28 23:07:01,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:07:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-28 23:07:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2021-10-28 23:07:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 112 states have (on average 1.4910714285714286) internal successors, (167), 152 states have internal predecessors, (167), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-10-28 23:07:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 215 transitions. [2021-10-28 23:07:01,646 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 215 transitions. Word has length 19 [2021-10-28 23:07:01,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:01,646 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 215 transitions. [2021-10-28 23:07:01,647 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) [2021-10-28 23:07:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 215 transitions. [2021-10-28 23:07:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:07:01,648 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:01,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:01,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-28 23:07:01,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:01,864 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting list_emptyErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:07:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1290860317, now seen corresponding path program 1 times [2021-10-28 23:07:01,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:01,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150057842] [2021-10-28 23:07:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:01,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:01,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:01,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 23:07:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:02,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:07:02,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:02,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:02,842 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-28 23:07:02,843 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 [2021-10-28 23:07:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:02,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:02,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150057842] [2021-10-28 23:07:02,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150057842] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:02,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:02,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-10-28 23:07:02,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777262863] [2021-10-28 23:07:02,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:07:02,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:07:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:07:02,873 INFO L87 Difference]: Start difference. First operand 193 states and 215 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) [2021-10-28 23:07:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:03,894 INFO L93 Difference]: Finished difference Result 192 states and 213 transitions. [2021-10-28 23:07:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:07:03,895 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 [2021-10-28 23:07:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:03,898 INFO L225 Difference]: With dead ends: 192 [2021-10-28 23:07:03,898 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 23:07:03,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:07:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 23:07:03,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-28 23:07:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 112 states have (on average 1.4732142857142858) internal successors, (165), 151 states have internal predecessors, (165), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-10-28 23:07:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2021-10-28 23:07:03,909 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 34 [2021-10-28 23:07:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:03,910 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2021-10-28 23:07:03,910 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) [2021-10-28 23:07:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2021-10-28 23:07:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:07:03,912 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:03,912 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:03,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:04,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:04,127 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting list_emptyErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:07:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1290860316, now seen corresponding path program 1 times [2021-10-28 23:07:04,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:04,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709635774] [2021-10-28 23:07:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:04,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:04,129 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:04,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 23:07:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:04,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:07:04,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:04,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:05,485 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 [2021-10-28 23:07:06,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:07:06,235 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 [2021-10-28 23:07:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:06,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:06,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709635774] [2021-10-28 23:07:06,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709635774] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:06,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:06,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-10-28 23:07:06,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751708923] [2021-10-28 23:07:06,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:07:06,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:07:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:07:06,492 INFO L87 Difference]: Start difference. First operand 192 states and 213 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) [2021-10-28 23:07:08,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:08,886 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2021-10-28 23:07:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:07:08,888 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 [2021-10-28 23:07:08,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:08,890 INFO L225 Difference]: With dead ends: 191 [2021-10-28 23:07:08,890 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 23:07:08,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:07:08,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 23:07:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-10-28 23:07:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 112 states have (on average 1.4553571428571428) internal successors, (163), 150 states have internal predecessors, (163), 24 states have call successors, (24), 21 states have call predecessors, (24), 19 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-10-28 23:07:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2021-10-28 23:07:08,907 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 34 [2021-10-28 23:07:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:08,907 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2021-10-28 23:07:08,908 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) [2021-10-28 23:07:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2021-10-28 23:07:08,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:07:08,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:08,910 INFO L513 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] [2021-10-28 23:07:08,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:09,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:09,125 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-10-28 23:07:09,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:09,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1952450521, now seen corresponding path program 1 times [2021-10-28 23:07:09,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:09,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445921719] [2021-10-28 23:07:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:09,127 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:09,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:09,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:09,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 23:07:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:09,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-28 23:07:09,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:09,681 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 [2021-10-28 23:07:10,030 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 [2021-10-28 23:07:10,380 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-10-28 23:07:10,380 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 [2021-10-28 23:07:10,631 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-28 23:07:10,632 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 [2021-10-28 23:07:11,031 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 [2021-10-28 23:07:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:11,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:21,900 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 [2021-10-28 23:07:22,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:22,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445921719] [2021-10-28 23:07:22,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 23:07:22,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699735066] [2021-10-28 23:07:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:22,872 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 23:07:22,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/cvc4 [2021-10-28 23:07:22,874 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 23:07:22,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-28 23:07:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:23,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 23:07:23,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:23,752 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 [2021-10-28 23:07:23,862 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 [2021-10-28 23:07:24,739 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 [2021-10-28 23:07:25,601 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-10-28 23:07:25,601 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 [2021-10-28 23:07:25,951 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-28 23:07:25,951 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 87 treesize of output 38 [2021-10-28 23:07:26,655 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 56 treesize of output 44 [2021-10-28 23:07:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:28,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:37,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:07:37,877 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 13737 treesize of output 13335 [2021-10-28 23:07:38,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 23:07:38,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248577344] [2021-10-28 23:07:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:38,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:07:38,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:07:38,534 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:07:38,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 23:07:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:39,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 23:07:39,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:39,156 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-28 23:07:39,157 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 [2021-10-28 23:07:40,482 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 [2021-10-28 23:07:40,699 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 [2021-10-28 23:07:40,880 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 [2021-10-28 23:07:41,313 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-28 23:07:41,314 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 [2021-10-28 23:07:41,511 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-10-28 23:07:41,511 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 [2021-10-28 23:07:41,746 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-28 23:07:41,746 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 [2021-10-28 23:07:41,974 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 [2021-10-28 23:07:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:42,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:54,077 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 [2021-10-28 23:07:56,159 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 [2021-10-28 23:08:34,709 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 43985 treesize of output 43857 [2021-10-28 23:08:34,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 23:08:34,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:34,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 23:08:34,890 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 23:08:34,890 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 23:08:34,897 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,899 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,899 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,899 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,899 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,900 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr2REQUIRES_VIOLATION [2021-10-28 23:08:34,900 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr3REQUIRES_VIOLATION [2021-10-28 23:08:34,900 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,900 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,900 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr2REQUIRES_VIOLATION [2021-10-28 23:08:34,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr3REQUIRES_VIOLATION [2021-10-28 23:08:34,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr4REQUIRES_VIOLATION [2021-10-28 23:08:34,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr5REQUIRES_VIOLATION [2021-10-28 23:08:34,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:34,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:34,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:34,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr2REQUIRES_VIOLATION [2021-10-28 23:08:34,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr3REQUIRES_VIOLATION [2021-10-28 23:08:34,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr4REQUIRES_VIOLATION [2021-10-28 23:08:34,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr5REQUIRES_VIOLATION [2021-10-28 23:08:34,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr6REQUIRES_VIOLATION [2021-10-28 23:08:34,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr7REQUIRES_VIOLATION [2021-10-28 23:08:34,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:34,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr2REQUIRES_VIOLATION [2021-10-28 23:08:34,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr3REQUIRES_VIOLATION [2021-10-28 23:08:34,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr4REQUIRES_VIOLATION [2021-10-28 23:08:34,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr5REQUIRES_VIOLATION [2021-10-28 23:08:34,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr6REQUIRES_VIOLATION [2021-10-28 23:08:34,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr7REQUIRES_VIOLATION [2021-10-28 23:08:34,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr2REQUIRES_VIOLATION [2021-10-28 23:08:34,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr3REQUIRES_VIOLATION [2021-10-28 23:08:34,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr0REQUIRES_VIOLATION [2021-10-28 23:08:34,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr1REQUIRES_VIOLATION [2021-10-28 23:08:34,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr2REQUIRES_VIOLATION [2021-10-28 23:08:34,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr3REQUIRES_VIOLATION [2021-10-28 23:08:34,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr4REQUIRES_VIOLATION [2021-10-28 23:08:34,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr5REQUIRES_VIOLATION [2021-10-28 23:08:34,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:35,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:35,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-10-28 23:08:35,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt [2021-10-28 23:08:35,528 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:35,532 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:08:35,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:08:35 BoogieIcfgContainer [2021-10-28 23:08:35,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:08:35,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:08:35,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:08:35,547 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:08:35,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:04:11" (3/4) ... [2021-10-28 23:08:35,552 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:08:35,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:08:35,553 INFO L168 Benchmark]: Toolchain (without parser) took 266247.79 ms. Allocated memory was 71.3 MB in the beginning and 216.0 MB in the end (delta: 144.7 MB). Free memory was 51.3 MB in the beginning and 90.7 MB in the end (delta: -39.4 MB). Peak memory consumption was 104.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:35,554 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 71.3 MB. Free memory is still 51.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:35,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.37 ms. Allocated memory is still 71.3 MB. Free memory was 51.0 MB in the beginning and 41.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:35,555 INFO L168 Benchmark]: Boogie Preprocessor took 94.47 ms. Allocated memory is still 71.3 MB. Free memory was 41.1 MB in the beginning and 37.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:35,555 INFO L168 Benchmark]: RCFGBuilder took 1342.01 ms. Allocated memory is still 71.3 MB. Free memory was 37.4 MB in the beginning and 27.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:35,556 INFO L168 Benchmark]: TraceAbstraction took 263940.74 ms. Allocated memory was 71.3 MB in the beginning and 216.0 MB in the end (delta: 144.7 MB). Free memory was 27.0 MB in the beginning and 90.7 MB in the end (delta: -63.7 MB). Peak memory consumption was 115.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:35,556 INFO L168 Benchmark]: Witness Printer took 5.66 ms. Allocated memory is still 216.0 MB. Free memory is still 90.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:35,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 71.3 MB. Free memory is still 51.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 858.37 ms. Allocated memory is still 71.3 MB. Free memory was 51.0 MB in the beginning and 41.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.47 ms. Allocated memory is still 71.3 MB. Free memory was 41.1 MB in the beginning and 37.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1342.01 ms. Allocated memory is still 71.3 MB. Free memory was 37.4 MB in the beginning and 27.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 263940.74 ms. Allocated memory was 71.3 MB in the beginning and 216.0 MB in the end (delta: 144.7 MB). Free memory was 27.0 MB in the beginning and 90.7 MB in the end (delta: -63.7 MB). Peak memory consumption was 115.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.66 ms. Allocated memory is still 216.0 MB. Free memory is still 90.7 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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) }; [L620] 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: 618]: 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: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: 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, 181 locations, 48 error locations. Started 1 CEGAR loops. OverallTime: 263.8s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 63.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1744 SDtfs, 1634 SDslu, 5830 SDs, 0 SdLazy, 4054 SolverSat, 302 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 492 GetRequests, 319 SyntacticMatches, 30 SemanticMatches, 143 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 133.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=6, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 83 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 120.5s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 467 ConstructedInterpolants, 68 QuantifiedInterpolants, 5776 SizeOfPredicates, 138 NumberOfNonLiveVariables, 2018 ConjunctsInSsa, 198 ConjunctsInUnsatCore, 27 InterpolantComputations, 26 PerfectInterpolantSequences, 6/10 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 [2021-10-28 23:08:35,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7782872-5858-4105-bc2f-5b89ed6f1b01/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...