./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/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_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg --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 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/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_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg --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 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:26:50,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:26:50,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:26:50,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:26:50,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:26:50,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:26:50,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:26:50,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:26:50,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:26:50,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:26:50,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:26:50,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:26:50,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:26:50,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:26:50,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:26:50,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:26:50,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:26:50,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:26:50,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:26:50,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:26:50,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:26:50,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:26:50,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:26:50,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:26:50,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:26:50,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:26:50,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:26:50,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:26:50,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:26:50,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:26:50,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:26:50,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:26:50,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:26:50,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:26:50,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:26:50,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:26:50,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:26:50,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:26:50,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:26:50,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:26:50,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:26:50,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:26:50,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:26:50,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:26:50,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:26:50,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:26:50,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:26:50,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:26:50,657 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:26:50,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:26:50,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:26:50,658 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:26:50,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:26:50,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:26:50,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:26:50,659 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:26:50,659 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:26:50,659 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:26:50,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:26:50,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:26:50,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:26:50,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:26:50,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:26:50,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:26:50,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:26:50,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:26:50,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:26:50,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:26:50,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:26:50,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:26:50,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:26:50,672 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_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-28 09:26:50,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:26:51,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:26:51,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:26:51,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:26:51,012 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:26:51,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-28 09:26:51,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data/dcd45dc8b/1bc2601e4b6448029095756c1572beaf/FLAG45f1bba9c [2021-10-28 09:26:51,794 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:26:51,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-28 09:26:51,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data/dcd45dc8b/1bc2601e4b6448029095756c1572beaf/FLAG45f1bba9c [2021-10-28 09:26:52,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data/dcd45dc8b/1bc2601e4b6448029095756c1572beaf [2021-10-28 09:26:52,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:26:52,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:26:52,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:52,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:26:52,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:26:52,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:52" (1/1) ... [2021-10-28 09:26:52,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c77781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:52, skipping insertion in model container [2021-10-28 09:26:52,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:52" (1/1) ... [2021-10-28 09:26:52,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:26:52,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:26:52,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:52,624 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-28 09:26:52,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c324ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:52, skipping insertion in model container [2021-10-28 09:26:52,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:52,626 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 09:26:52,630 INFO L168 Benchmark]: Toolchain (without parser) took 564.83 ms. Allocated memory was 113.2 MB in the beginning and 153.1 MB in the end (delta: 39.8 MB). Free memory was 83.8 MB in the beginning and 126.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:52,631 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 113.2 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:26:52,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.60 ms. Allocated memory was 113.2 MB in the beginning and 153.1 MB in the end (delta: 39.8 MB). Free memory was 83.4 MB in the beginning and 126.8 MB in the end (delta: -43.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:52,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 113.2 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 551.60 ms. Allocated memory was 113.2 MB in the beginning and 153.1 MB in the end (delta: 39.8 MB). Free memory was 83.4 MB in the beginning and 126.8 MB in the end (delta: -43.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:26:55,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:26:55,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:26:55,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:26:55,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:26:55,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:26:55,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:26:55,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:26:55,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:26:55,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:26:55,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:26:55,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:26:55,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:26:55,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:26:55,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:26:55,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:26:55,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:26:55,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:26:55,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:26:55,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:26:55,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:26:55,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:26:55,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:26:55,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:26:55,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:26:55,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:26:55,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:26:55,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:26:55,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:26:55,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:26:55,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:26:55,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:26:55,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:26:55,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:26:55,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:26:55,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:26:55,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:26:55,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:26:55,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:26:55,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:26:55,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:26:55,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:26:55,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:26:55,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:26:55,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:26:55,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:26:55,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:26:55,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:26:55,839 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:26:55,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:26:55,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:26:55,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:26:55,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:26:55,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:26:55,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:26:55,842 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:26:55,842 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:26:55,843 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:26:55,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:26:55,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:26:55,843 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:26:55,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:26:55,844 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:26:55,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:26:55,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:26:55,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:26:55,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:26:55,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:26:55,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:26:55,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:26:55,846 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:26:55,846 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:26:55,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:26:55,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:26:55,847 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_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-28 09:26:56,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:26:56,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:26:56,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:26:56,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:26:56,450 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:26:56,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-28 09:26:56,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data/f289455f5/8819c97a86084799a3a7f307b69a430b/FLAGf3fcfc424 [2021-10-28 09:26:57,424 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:26:57,430 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-28 09:26:57,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data/f289455f5/8819c97a86084799a3a7f307b69a430b/FLAGf3fcfc424 [2021-10-28 09:26:57,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/data/f289455f5/8819c97a86084799a3a7f307b69a430b [2021-10-28 09:26:57,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:26:57,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:26:57,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:57,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:26:57,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:26:57,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:57" (1/1) ... [2021-10-28 09:26:57,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eead81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:57, skipping insertion in model container [2021-10-28 09:26:57,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:57" (1/1) ... [2021-10-28 09:26:57,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:26:57,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:26:58,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:58,150 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 09:26:58,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:26:58,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:58,206 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:26:58,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:58,313 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:26:58,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58 WrapperNode [2021-10-28 09:26:58,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:58,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:26:58,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:26:58,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:26:58,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (1/1) ... [2021-10-28 09:26:58,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (1/1) ... [2021-10-28 09:26:58,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (1/1) ... [2021-10-28 09:26:58,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (1/1) ... [2021-10-28 09:26:58,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (1/1) ... [2021-10-28 09:26:58,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (1/1) ... [2021-10-28 09:26:58,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (1/1) ... [2021-10-28 09:26:58,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:26:58,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:26:58,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:26:58,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:26:58,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (1/1) ... [2021-10-28 09:26:58,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:26:58,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:58,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:26:58,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:26:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:26:58,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:26:58,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:26:58,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:26:58,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:26:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 09:26:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-10-28 09:26:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:26:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:26:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:26:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:26:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:26:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:26:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:26:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:26:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:26:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:26:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:26:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:26:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:26:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:26:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:26:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:26:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:26:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:26:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:26:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:26:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:26:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:26:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:26:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:26:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:26:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:26:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:26:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:26:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:26:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:26:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:26:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:26:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:26:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:26:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:26:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:26:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:26:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:26:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:26:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:26:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:26:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:26:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:26:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:26:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:26:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:26:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:26:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:26:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:26:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:26:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:26:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:26:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:26:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:26:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:26:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:26:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:26:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:26:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:26:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:26:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:26:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:26:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:26:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:26:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:26:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:26:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:26:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:26:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:26:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:26:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:26:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:26:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:26:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:26:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:26:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:26:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:26:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:26:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:26:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:26:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:26:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:26:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:26:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:26:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:26:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:26:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:26:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:26:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:26:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:26:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:26:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:26:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:26:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:26:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:26:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:26:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:26:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:26:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:26:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:26:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:26:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:26:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:26:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:26:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:26:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:26:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 09:26:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-10-28 09:26:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:26:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:26:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:26:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:26:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:26:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:26:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:26:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:26:59,139 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 09:26:59,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:26:59,407 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 09:26:59,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:59 BoogieIcfgContainer [2021-10-28 09:26:59,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:26:59,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:26:59,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:26:59,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:26:59,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:26:57" (1/3) ... [2021-10-28 09:26:59,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ee1bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:26:59, skipping insertion in model container [2021-10-28 09:26:59,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:58" (2/3) ... [2021-10-28 09:26:59,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ee1bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:26:59, skipping insertion in model container [2021-10-28 09:26:59,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:59" (3/3) ... [2021-10-28 09:26:59,438 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-10-28 09:26:59,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:26:59,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-28 09:26:59,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:26:59,540 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:26:59,541 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-28 09:26:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 09:26:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:26:59,582 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:26:59,583 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:59,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 09:26:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1580649199, now seen corresponding path program 1 times [2021-10-28 09:26:59,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:26:59,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997276057] [2021-10-28 09:26:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:59,627 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:26:59,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:26:59,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:26:59,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:26:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:59,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:26:59,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:00,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:27:00,332 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 09:27:00,333 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 21 treesize of output 26 [2021-10-28 09:27:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:00,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:01,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:01,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997276057] [2021-10-28 09:27:01,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997276057] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:27:01,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:27:01,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-10-28 09:27:01,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609332046] [2021-10-28 09:27:01,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:27:01,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:27:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:27:01,071 INFO L87 Difference]: Start difference. First operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:27:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:01,790 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-28 09:27:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:27:01,792 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-10-28 09:27:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:01,801 INFO L225 Difference]: With dead ends: 38 [2021-10-28 09:27:01,802 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 09:27:01,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:27:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 09:27:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-28 09:27:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:27:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-28 09:27:01,852 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2021-10-28 09:27:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:01,854 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-28 09:27:01,854 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:27:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-28 09:27:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:27:01,856 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:01,856 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:01,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:02,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:02,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 09:27:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1580649198, now seen corresponding path program 1 times [2021-10-28 09:27:02,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:02,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717090361] [2021-10-28 09:27:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:02,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:02,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:02,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:02,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:27:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:02,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:27:02,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:02,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:27:02,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:27:02,747 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:27:02,748 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 36 treesize of output 38 [2021-10-28 09:27:02,765 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:27:02,766 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 35 treesize of output 35 [2021-10-28 09:27:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:02,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:16,979 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~s~0.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_main_~s~0.base_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_node_~temp~0.base_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_alloc_node_~temp~0.base_16)))) (let ((.cse0 (bvadd (_ bv4 32) v_main_~s~0.offset_BEFORE_CALL_2))) (and (bvule v_main_~s~0.offset_BEFORE_CALL_2 .cse0) (bvule .cse0 (select (store |c_#length| v_alloc_node_~temp~0.base_16 (_ bv4 32)) v_main_~s~0.base_BEFORE_CALL_4)))) (exists ((v_alloc_node_~temp~0.base_15 (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv4 32) v_main_~s~0.offset_BEFORE_CALL_2))) (or (not (bvule .cse1 (select (store |c_old(#length)| v_alloc_node_~temp~0.base_15 (_ bv4 32)) v_main_~s~0.base_BEFORE_CALL_4))) (not (bvule v_main_~s~0.offset_BEFORE_CALL_2 .cse1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_alloc_node_~temp~0.base_15))))))))))) is different from false [2021-10-28 09:27:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:24,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:24,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717090361] [2021-10-28 09:27:24,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717090361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:27:24,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:27:24,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-28 09:27:24,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570971821] [2021-10-28 09:27:24,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:27:24,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:24,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:27:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=172, Unknown=5, NotChecked=26, Total=240 [2021-10-28 09:27:24,540 INFO L87 Difference]: Start difference. First operand 31 states and 31 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, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:27:39,310 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (= |c_#length| |c_old(#length)|) (forall ((v_main_~s~0.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_main_~s~0.base_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_node_~temp~0.base_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_alloc_node_~temp~0.base_16)))) (let ((.cse0 (bvadd (_ bv4 32) v_main_~s~0.offset_BEFORE_CALL_2))) (and (bvule v_main_~s~0.offset_BEFORE_CALL_2 .cse0) (bvule .cse0 (select (store |c_#length| v_alloc_node_~temp~0.base_16 (_ bv4 32)) v_main_~s~0.base_BEFORE_CALL_4)))) (exists ((v_alloc_node_~temp~0.base_15 (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv4 32) v_main_~s~0.offset_BEFORE_CALL_2))) (or (not (bvule .cse1 (select (store |c_old(#length)| v_alloc_node_~temp~0.base_15 (_ bv4 32)) v_main_~s~0.base_BEFORE_CALL_4))) (not (bvule v_main_~s~0.offset_BEFORE_CALL_2 .cse1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_alloc_node_~temp~0.base_15)))))))))))) is different from false [2021-10-28 09:27:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:40,158 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-28 09:27:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:27:40,159 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, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 19 [2021-10-28 09:27:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:40,161 INFO L225 Difference]: With dead ends: 28 [2021-10-28 09:27:40,161 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 09:27:40,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=73, Invalid=309, Unknown=6, NotChecked=74, Total=462 [2021-10-28 09:27:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 09:27:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-28 09:27:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:27:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-28 09:27:40,169 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2021-10-28 09:27:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:40,169 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-28 09:27:40,170 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, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:27:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-28 09:27:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:27:40,171 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:40,171 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:40,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:40,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:40,378 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 09:27:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash 901162851, now seen corresponding path program 1 times [2021-10-28 09:27:40,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:40,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239423482] [2021-10-28 09:27:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:40,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:40,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:40,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:40,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:27:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:40,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:27:40,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:40,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:27:40,757 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 21 treesize of output 17 [2021-10-28 09:27:40,824 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 21 treesize of output 13 [2021-10-28 09:27:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:27:40,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:27:41,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:41,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239423482] [2021-10-28 09:27:41,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239423482] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:27:41,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:27:41,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 09:27:41,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552904412] [2021-10-28 09:27:41,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:27:41,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:27:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:27:41,074 INFO L87 Difference]: Start difference. First operand 27 states and 27 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:27:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:41,306 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-28 09:27:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:27:41,307 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-10-28 09:27:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:41,309 INFO L225 Difference]: With dead ends: 26 [2021-10-28 09:27:41,309 INFO L226 Difference]: Without dead ends: 26 [2021-10-28 09:27:41,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:27:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-28 09:27:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-28 09:27:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:27:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-28 09:27:41,316 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2021-10-28 09:27:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:41,317 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-28 09:27:41,317 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:27:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-28 09:27:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:27:41,318 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:41,319 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:41,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:41,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:41,535 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 09:27:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash 901162852, now seen corresponding path program 1 times [2021-10-28 09:27:41,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:41,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538580753] [2021-10-28 09:27:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:41,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:41,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:41,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:41,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:27:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:41,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:27:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:41,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:27:41,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 09:27:42,000 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 17 treesize of output 13 [2021-10-28 09:27:42,079 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 [2021-10-28 09:27:42,086 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 [2021-10-28 09:27:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:27:42,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:27:43,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:43,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538580753] [2021-10-28 09:27:43,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538580753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:27:43,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:27:43,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-28 09:27:43,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592983105] [2021-10-28 09:27:43,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:27:43,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:43,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:27:43,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:27:43,010 INFO L87 Difference]: Start difference. First operand 26 states and 26 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, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:27:43,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:43,541 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-28 09:27:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:27:43,542 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, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2021-10-28 09:27:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:43,543 INFO L225 Difference]: With dead ends: 25 [2021-10-28 09:27:43,544 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 09:27:43,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:27:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 09:27:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 09:27:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:27:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-28 09:27:43,551 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2021-10-28 09:27:43,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:43,552 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-28 09:27:43,553 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, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:27:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-28 09:27:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:27:43,555 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:43,555 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:43,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:43,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:43,771 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 09:27:43,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1584820282, now seen corresponding path program 1 times [2021-10-28 09:27:43,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:43,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76711692] [2021-10-28 09:27:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:43,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:43,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:43,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:27:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:44,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:27:44,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:44,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:27:44,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:44,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76711692] [2021-10-28 09:27:44,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76711692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:27:44,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:27:44,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 09:27:44,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288080719] [2021-10-28 09:27:44,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:27:44,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:44,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:27:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:27:44,984 INFO L87 Difference]: Start difference. First operand 25 states and 25 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, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-28 09:27:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:45,357 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-28 09:27:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:27:45,366 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, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2021-10-28 09:27:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:45,371 INFO L225 Difference]: With dead ends: 25 [2021-10-28 09:27:45,372 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 09:27:45,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:27:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 09:27:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-28 09:27:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:27:45,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-28 09:27:45,380 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 26 [2021-10-28 09:27:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:45,381 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-28 09:27:45,381 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, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-28 09:27:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-28 09:27:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 09:27:45,383 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:45,383 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:45,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:45,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:45,596 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr11ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 09:27:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1701102057, now seen corresponding path program 1 times [2021-10-28 09:27:45,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:45,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264730623] [2021-10-28 09:27:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:45,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:45,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:45,599 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:45,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:27:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:27:45,881 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:27:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:27:45,983 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:27:45,983 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:27:45,984 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr11ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:27:45,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:27:45,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:27:45,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:27:45,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:27:45,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:27:45,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:27:45,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:27:45,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:27:45,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:27:45,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:27:45,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:27:46,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:46,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:46,209 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 09:27:46,213 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:27:46,222 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 09:27:46,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:27:46 BoogieIcfgContainer [2021-10-28 09:27:46,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:27:46,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:27:46,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:27:46,240 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:27:46,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:59" (3/4) ... [2021-10-28 09:27:46,245 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:27:46,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:27:46,246 INFO L168 Benchmark]: Toolchain (without parser) took 48600.83 ms. Allocated memory was 58.7 MB in the beginning and 98.6 MB in the end (delta: 39.8 MB). Free memory was 36.4 MB in the beginning and 47.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:27:46,247 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 39.5 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:27:46,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.45 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 33.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:27:46,249 INFO L168 Benchmark]: Boogie Preprocessor took 142.18 ms. Allocated memory is still 58.7 MB. Free memory was 33.2 MB in the beginning and 30.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:27:46,250 INFO L168 Benchmark]: RCFGBuilder took 954.72 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 30.6 MB in the beginning and 45.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:27:46,251 INFO L168 Benchmark]: TraceAbstraction took 46822.84 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 45.0 MB in the beginning and 47.5 MB in the end (delta: -2.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:27:46,251 INFO L168 Benchmark]: Witness Printer took 5.82 ms. Allocated memory is still 98.6 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:27:46,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 39.5 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 665.45 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 33.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 142.18 ms. Allocated memory is still 58.7 MB. Free memory was 33.2 MB in the beginning and 30.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 954.72 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 30.6 MB in the beginning and 45.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 46822.84 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 45.0 MB in the beginning and 47.5 MB in the end (delta: -2.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.82 ms. Allocated memory is still 98.6 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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={5:0}] [L566] return temp; VAL [\result={5:0}, temp={5:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={5:0}] [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={6:0}] [L566] return temp; VAL [\result={6:0}, temp={6:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={6:0}, s={5:0}] [L570] s->next = alloc_node() VAL [alloc_node()={6:0}, s={5:0}] [L571] EXPR s->next VAL [s={5:0}, s->next={6:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={5:0}, s->next={6:0}] [L572] free(s) VAL [s={5:0}] [L572] free(s) VAL [s={5:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={5:0}] - 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 8 procedures, 54 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 46.6s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 110 SDslu, 323 SDs, 0 SdLazy, 561 SolverSat, 47 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 14.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 22.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 26.1s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 206 ConstructedInterpolants, 30 QuantifiedInterpolants, 1656 SizeOfPredicates, 21 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 26/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:27:46,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0945726-9089-4722-9090-0c4e860f8ad7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...