./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:11:53,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:11:53,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:11:53,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:11:53,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:11:53,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:11:53,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:11:53,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:11:53,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:11:53,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:11:53,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:11:53,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:11:53,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:11:53,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:11:53,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:11:53,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:11:53,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:11:53,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:11:53,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:11:53,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:11:53,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:11:53,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:11:53,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:11:53,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:11:53,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:11:53,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:11:53,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:11:53,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:11:53,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:11:53,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:11:53,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:11:53,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:11:53,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:11:53,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:11:53,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:11:53,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:11:53,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:11:53,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:11:53,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:11:53,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:11:53,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:11:53,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:11:53,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:11:53,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:11:53,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:11:53,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:11:53,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:11:53,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:11:53,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:11:53,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:11:53,700 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:11:53,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:11:53,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:11:53,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:11:53,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:11:53,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:11:53,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:11:53,703 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:11:53,703 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:11:53,703 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:11:53,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:11:53,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:11:53,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:11:53,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:11:53,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:11:53,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:11:53,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:11:53,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:11:53,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:11:53,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:11:53,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:11:53,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:11:53,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:11:53,708 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_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-11-20 06:11:54,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:11:54,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:11:54,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:11:54,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:11:54,055 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:11:54,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-20 06:11:54,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data/ee987fead/c1a6627a6ae24576adcc0ee25d6335b3/FLAG1c2dcb903 [2021-11-20 06:11:54,715 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:11:54,716 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-20 06:11:54,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data/ee987fead/c1a6627a6ae24576adcc0ee25d6335b3/FLAG1c2dcb903 [2021-11-20 06:11:55,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data/ee987fead/c1a6627a6ae24576adcc0ee25d6335b3 [2021-11-20 06:11:55,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:11:55,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:11:55,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:11:55,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:11:55,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:11:55,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:11:55" (1/1) ... [2021-11-20 06:11:55,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a071cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:11:55, skipping insertion in model container [2021-11-20 06:11:55,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:11:55" (1/1) ... [2021-11-20 06:11:55,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:11:55,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:11:55,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:11:55,375 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 06:11:55,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4575c33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:11:55, skipping insertion in model container [2021-11-20 06:11:55,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:11:55,376 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 06:11:55,378 INFO L158 Benchmark]: Toolchain (without parser) took 367.03ms. Allocated memory is still 107.0MB. Free memory was 69.0MB in the beginning and 80.9MB in the end (delta: -11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:11:55,379 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 80.5MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:11:55,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.11ms. Allocated memory is still 107.0MB. Free memory was 68.8MB in the beginning and 80.9MB in the end (delta: -12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:11:55,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 80.5MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.11ms. Allocated memory is still 107.0MB. Free memory was 68.8MB in the beginning and 80.9MB in the end (delta: -12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:11:57,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:11:57,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:11:57,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:11:57,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:11:57,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:11:57,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:11:57,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:11:57,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:11:57,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:11:57,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:11:57,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:11:57,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:11:57,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:11:57,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:11:57,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:11:57,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:11:57,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:11:57,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:11:57,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:11:57,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:11:57,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:11:57,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:11:57,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:11:57,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:11:57,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:11:57,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:11:57,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:11:57,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:11:57,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:11:57,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:11:57,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:11:57,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:11:57,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:11:57,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:11:57,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:11:57,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:11:57,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:11:57,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:11:57,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:11:57,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:11:57,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 06:11:57,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:11:57,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:11:57,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:11:57,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:11:57,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:11:57,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:11:57,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:11:57,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:11:57,818 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:11:57,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:11:57,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:11:57,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:11:57,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:11:57,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:11:57,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:11:57,822 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:11:57,822 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:11:57,822 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:11:57,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:11:57,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:11:57,823 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:11:57,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:11:57,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:11:57,824 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:11:57,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:11:57,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:11:57,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:11:57,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:11:57,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:11:57,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:11:57,827 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:11:57,827 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:11:57,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:11:57,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:11:57,828 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_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-11-20 06:11:58,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:11:58,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:11:58,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:11:58,373 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:11:58,374 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:11:58,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-20 06:11:58,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data/c1df88d3c/4d6e76efbc0d49458a093b78c879fc1c/FLAG44983c91f [2021-11-20 06:11:59,144 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:11:59,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-20 06:11:59,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data/c1df88d3c/4d6e76efbc0d49458a093b78c879fc1c/FLAG44983c91f [2021-11-20 06:11:59,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/data/c1df88d3c/4d6e76efbc0d49458a093b78c879fc1c [2021-11-20 06:11:59,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:11:59,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:11:59,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:11:59,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:11:59,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:11:59,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:11:59" (1/1) ... [2021-11-20 06:11:59,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c43781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:11:59, skipping insertion in model container [2021-11-20 06:11:59,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:11:59" (1/1) ... [2021-11-20 06:11:59,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:11:59,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:11:59,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:11:59,946 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:11:59,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:11:59,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:12:00,001 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:12:00,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:12:00,072 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:12:00,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00 WrapperNode [2021-11-20 06:12:00,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:12:00,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:12:00,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:12:00,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:12:00,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,158 INFO L137 Inliner]: procedures = 115, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-11-20 06:12:00,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:12:00,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:12:00,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:12:00,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:12:00,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:12:00,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:12:00,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:12:00,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:12:00,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (1/1) ... [2021-11-20 06:12:00,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:12:00,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:12:00,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:12:00,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:12:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-11-20 06:12:00,310 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-11-20 06:12:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:12:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:12:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:12:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:12:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:12:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:12:00,410 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:12:00,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:12:00,648 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:12:00,655 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:12:00,655 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:12:00,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:12:00 BoogieIcfgContainer [2021-11-20 06:12:00,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:12:00,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:12:00,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:12:00,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:12:00,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:11:59" (1/3) ... [2021-11-20 06:12:00,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7528649f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:12:00, skipping insertion in model container [2021-11-20 06:12:00,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:00" (2/3) ... [2021-11-20 06:12:00,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7528649f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:12:00, skipping insertion in model container [2021-11-20 06:12:00,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:12:00" (3/3) ... [2021-11-20 06:12:00,664 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-11-20 06:12:00,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:12:00,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-20 06:12:00,711 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:12:00,718 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:12:00,719 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-20 06:12:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:12:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:12:00,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:00,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:00,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-20 06:12:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625018, now seen corresponding path program 1 times [2021-11-20 06:12:00,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:12:00,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512472553] [2021-11-20 06:12:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:00,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:12:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:12:00,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:12:00,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:12:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:00,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:12:00,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:12:00,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:12:01,228 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:12:01,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-20 06:12:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:01,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:12:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:01,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:12:01,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512472553] [2021-11-20 06:12:01,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512472553] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:12:01,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:12:01,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-11-20 06:12:01,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864442526] [2021-11-20 06:12:01,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:12:01,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:12:01,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:12:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:12:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:12:01,623 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:12:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:12:01,900 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-20 06:12:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:12:01,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2021-11-20 06:12:01,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:12:01,909 INFO L225 Difference]: With dead ends: 31 [2021-11-20 06:12:01,909 INFO L226 Difference]: Without dead ends: 28 [2021-11-20 06:12:01,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:12:01,914 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:12:01,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2021-11-20 06:12:01,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-20 06:12:01,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-20 06:12:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:12:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-11-20 06:12:01,976 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 16 [2021-11-20 06:12:01,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:12:01,977 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-11-20 06:12:01,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:12:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-11-20 06:12:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:12:01,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:01,979 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:01,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:12:02,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:12:02,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-20 06:12:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625017, now seen corresponding path program 1 times [2021-11-20 06:12:02,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:12:02,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946152849] [2021-11-20 06:12:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:02,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:12:02,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:12:02,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:12:02,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:12:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:02,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 06:12:02,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:12:02,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:12:02,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:12:02,684 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:12:02,685 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 37 treesize of output 39 [2021-11-20 06:12:02,700 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:12:02,701 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 36 treesize of output 36 [2021-11-20 06:12:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:02,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:12:16,034 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_alloc_node_~temp~0#1.base_16| (_ BitVec 32)) (|v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_4| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_alloc_node_~temp~0#1.base_16|)))) (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2|))) (and (bvule .cse0 (select (store |c_#length| |v_alloc_node_~temp~0#1.base_16| (_ bv4 32)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_4|)) (bvule |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2| .cse0))) (exists ((|v_alloc_node_~temp~0#1.base_15| (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2|))) (or (not (bvule |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2| .cse1)) (not (bvule .cse1 (select (store |c_old(#length)| |v_alloc_node_~temp~0#1.base_15| (_ bv4 32)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_alloc_node_~temp~0#1.base_15|))))))))))))) is different from false [2021-11-20 06:12:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:19,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:12:19,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946152849] [2021-11-20 06:12:19,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946152849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:12:19,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:12:19,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-20 06:12:19,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045763102] [2021-11-20 06:12:19,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:12:19,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:12:19,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:12:19,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:12:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=172, Unknown=5, NotChecked=26, Total=240 [2021-11-20 06:12:19,432 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:12:21,582 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_alloc_node_~temp~0#1.base_16| (_ BitVec 32)) (|v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_4| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_alloc_node_~temp~0#1.base_16|)))) (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2|))) (and (bvule .cse0 (select (store |c_#length| |v_alloc_node_~temp~0#1.base_16| (_ bv4 32)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_4|)) (bvule |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2| .cse0))) (exists ((|v_alloc_node_~temp~0#1.base_15| (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2|))) (or (not (bvule |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_2| .cse1)) (not (bvule .cse1 (select (store |c_old(#length)| |v_alloc_node_~temp~0#1.base_15| (_ bv4 32)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_alloc_node_~temp~0#1.base_15|))))))))))))) (= |c_#length| |c_old(#length)|)) is different from false [2021-11-20 06:12:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:12:21,710 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-11-20 06:12:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:12:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16 [2021-11-20 06:12:21,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:12:21,712 INFO L225 Difference]: With dead ends: 27 [2021-11-20 06:12:21,713 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 06:12:21,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=51, Invalid=223, Unknown=6, NotChecked=62, Total=342 [2021-11-20 06:12:21,715 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:12:21,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 59 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 126 Unchecked, 0.2s Time] [2021-11-20 06:12:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 06:12:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-11-20 06:12:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:12:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-11-20 06:12:21,723 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 16 [2021-11-20 06:12:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:12:21,723 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-11-20 06:12:21,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:12:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-11-20 06:12:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:12:21,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:21,725 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:21,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 06:12:21,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:12:21,951 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-20 06:12:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1942210024, now seen corresponding path program 1 times [2021-11-20 06:12:21,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:12:21,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395485737] [2021-11-20 06:12:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:21,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:12:21,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:12:21,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:12:21,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:12:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:21,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:12:22,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:12:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:12:22,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:12:22,245 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 [2021-11-20 06:12:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:12:22,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:12:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395485737] [2021-11-20 06:12:22,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395485737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:12:22,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:12:22,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-11-20 06:12:22,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552842805] [2021-11-20 06:12:22,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:12:22,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:12:22,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:12:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:12:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:12:22,531 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:12:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:12:22,770 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-20 06:12:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:12:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2021-11-20 06:12:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:12:22,772 INFO L225 Difference]: With dead ends: 24 [2021-11-20 06:12:22,772 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 06:12:22,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:12:22,774 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 39 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:12:22,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 60 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:12:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 06:12:22,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-20 06:12:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:12:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-20 06:12:22,781 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2021-11-20 06:12:22,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:12:22,781 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-20 06:12:22,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:12:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-20 06:12:22,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:12:22,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:22,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:22,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-20 06:12:22,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:12:22,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-20 06:12:22,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 78968552, now seen corresponding path program 1 times [2021-11-20 06:12:22,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:12:22,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143167906] [2021-11-20 06:12:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:22,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:12:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:12:23,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:12:23,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:12:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:23,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:12:23,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:12:23,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:12:23,143 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 20 treesize of output 16 [2021-11-20 06:12:23,180 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 20 treesize of output 12 [2021-11-20 06:12:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:12:23,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:12:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:12:23,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:12:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143167906] [2021-11-20 06:12:23,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143167906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:12:23,354 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:12:23,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 06:12:23,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872883500] [2021-11-20 06:12:23,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:12:23,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:12:23,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:12:23,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:12:23,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:12:23,356 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:12:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:12:23,577 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-11-20 06:12:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:12:23,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-20 06:12:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:12:23,579 INFO L225 Difference]: With dead ends: 23 [2021-11-20 06:12:23,579 INFO L226 Difference]: Without dead ends: 23 [2021-11-20 06:12:23,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:12:23,581 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:12:23,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:12:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-20 06:12:23,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-20 06:12:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:12:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-20 06:12:23,587 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2021-11-20 06:12:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:12:23,587 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-20 06:12:23,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:12:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-20 06:12:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:12:23,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:23,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:23,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:12:23,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:12:23,800 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-20 06:12:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:23,801 INFO L85 PathProgramCache]: Analyzing trace with hash 78968553, now seen corresponding path program 1 times [2021-11-20 06:12:23,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:12:23,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020944321] [2021-11-20 06:12:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:23,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:12:23,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:12:23,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:12:23,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:12:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:23,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:12:23,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:12:23,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:12:24,000 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 [2021-11-20 06:12:24,010 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 17 treesize of output 13 [2021-11-20 06:12:24,073 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 31 treesize of output 23 [2021-11-20 06:12:24,077 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 20 treesize of output 12 [2021-11-20 06:12:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:12:24,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:12:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:12:24,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:12:24,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020944321] [2021-11-20 06:12:24,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020944321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:12:24,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:12:24,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 06:12:24,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078428091] [2021-11-20 06:12:24,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:12:24,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:12:24,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:12:24,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:12:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:12:24,683 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:12:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:12:25,134 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-20 06:12:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:12:25,135 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2021-11-20 06:12:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:12:25,136 INFO L225 Difference]: With dead ends: 22 [2021-11-20 06:12:25,136 INFO L226 Difference]: Without dead ends: 22 [2021-11-20 06:12:25,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:12:25,138 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:12:25,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:12:25,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-20 06:12:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-20 06:12:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:12:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-11-20 06:12:25,144 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2021-11-20 06:12:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:12:25,145 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-11-20 06:12:25,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:12:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-11-20 06:12:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 06:12:25,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:25,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:25,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:12:25,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:12:25,347 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-20 06:12:25,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:25,348 INFO L85 PathProgramCache]: Analyzing trace with hash 570997579, now seen corresponding path program 1 times [2021-11-20 06:12:25,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:12:25,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807364172] [2021-11-20 06:12:25,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:25,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:12:25,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:12:25,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:12:25,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:12:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:25,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:12:25,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:12:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:25,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:12:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:12:26,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:12:26,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807364172] [2021-11-20 06:12:26,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807364172] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:12:26,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:12:26,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-11-20 06:12:26,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573083103] [2021-11-20 06:12:26,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:12:26,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:12:26,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:12:26,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:12:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:12:26,055 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:12:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:12:26,255 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-20 06:12:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:12:26,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2021-11-20 06:12:26,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:12:26,257 INFO L225 Difference]: With dead ends: 22 [2021-11-20 06:12:26,257 INFO L226 Difference]: Without dead ends: 22 [2021-11-20 06:12:26,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:12:26,258 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:12:26,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 42 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2021-11-20 06:12:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-20 06:12:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-11-20 06:12:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:12:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-20 06:12:26,264 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2021-11-20 06:12:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:12:26,265 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-20 06:12:26,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:12:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-20 06:12:26,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:12:26,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:26,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:26,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:12:26,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:12:26,473 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-20 06:12:26,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1027138706, now seen corresponding path program 1 times [2021-11-20 06:12:26,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:12:26,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210686820] [2021-11-20 06:12:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:26,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:12:26,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:12:26,475 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:12:26,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:12:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:12:26,528 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:12:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:12:26,581 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 06:12:26,582 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:12:26,583 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2021-11-20 06:12:26,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (10 of 12 remaining) [2021-11-20 06:12:26,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (9 of 12 remaining) [2021-11-20 06:12:26,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (8 of 12 remaining) [2021-11-20 06:12:26,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (7 of 12 remaining) [2021-11-20 06:12:26,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (6 of 12 remaining) [2021-11-20 06:12:26,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (5 of 12 remaining) [2021-11-20 06:12:26,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (4 of 12 remaining) [2021-11-20 06:12:26,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (3 of 12 remaining) [2021-11-20 06:12:26,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2021-11-20 06:12:26,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2021-11-20 06:12:26,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2021-11-20 06:12:26,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:12:26,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:12:26,805 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:26,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:12:26,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:12:26 BoogieIcfgContainer [2021-11-20 06:12:26,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:12:26,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:12:26,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:12:26,837 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:12:26,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:12:00" (3/4) ... [2021-11-20 06:12:26,841 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:12:26,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:12:26,842 INFO L158 Benchmark]: Toolchain (without parser) took 27408.59ms. Allocated memory was 56.6MB in the beginning and 96.5MB in the end (delta: 39.8MB). Free memory was 33.4MB in the beginning and 43.7MB in the end (delta: -10.3MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2021-11-20 06:12:26,842 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 56.6MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:12:26,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.47ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 33.2MB in the beginning and 54.1MB in the end (delta: -20.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:12:26,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.77ms. Allocated memory is still 79.7MB. Free memory was 54.1MB in the beginning and 52.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:12:26,844 INFO L158 Benchmark]: Boogie Preprocessor took 60.99ms. Allocated memory is still 79.7MB. Free memory was 52.1MB in the beginning and 50.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:12:26,844 INFO L158 Benchmark]: RCFGBuilder took 435.85ms. Allocated memory is still 79.7MB. Free memory was 50.7MB in the beginning and 59.1MB in the end (delta: -8.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-11-20 06:12:26,845 INFO L158 Benchmark]: TraceAbstraction took 26177.65ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 58.6MB in the beginning and 44.5MB in the end (delta: 14.1MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2021-11-20 06:12:26,846 INFO L158 Benchmark]: Witness Printer took 4.59ms. Allocated memory is still 96.5MB. Free memory was 44.5MB in the beginning and 43.7MB in the end (delta: 837.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:12:26,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 56.6MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.47ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 33.2MB in the beginning and 54.1MB in the end (delta: -20.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.77ms. Allocated memory is still 79.7MB. Free memory was 54.1MB in the beginning and 52.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.99ms. Allocated memory is still 79.7MB. Free memory was 52.1MB in the beginning and 50.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 435.85ms. Allocated memory is still 79.7MB. Free memory was 50.7MB in the beginning and 59.1MB in the end (delta: -8.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 26177.65ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 58.6MB in the beginning and 44.5MB in the end (delta: 14.1MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * Witness Printer took 4.59ms. Allocated memory is still 96.5MB. Free memory was 44.5MB in the beginning and 43.7MB in the end (delta: 837.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={1:0}] [L566] return temp; VAL [\result={1:0}, temp={1:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={1:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={2:0}] [L566] return temp; VAL [\result={2:0}, temp={2:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L570] s->next = alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L571] EXPR s->next VAL [s={1:0}, s->next={2:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={1:0}, s->next={2:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={1:0}] - 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: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 26.1s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 371 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 165 IncrementalHoareTripleChecker+Unchecked, 289 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 411 IncrementalHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 82 mSDtfsCounter, 411 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 148 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 30 QuantifiedInterpolants, 1638 SizeOfPredicates, 24 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 28/60 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 [2021-11-20 06:12:26,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8ea5003-b903-4ba8-bcf8-46bc95cab2c7/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample