./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf7af2f20e563d03f4a81a8dac054ded849cb34c ............................................................................................................................................. 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_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf7af2f20e563d03f4a81a8dac054ded849cb34c ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:59,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:59,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:59,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:59,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:59,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:59,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:59,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:59,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:59,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:59,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:59,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:59,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:59,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:59,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:59,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:59,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:59,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:59,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:59,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:59,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:59,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:59,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:59,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:59,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:59,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:59,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:59,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:59,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:59,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:59,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:59,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:59,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:59,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:59,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:59,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:59,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:59,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:59,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:59,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:59,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:59,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:27:59,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:59,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:59,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:59,746 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:59,746 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:59,746 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:59,746 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:59,747 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:59,747 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:59,747 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:59,747 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:59,747 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:59,748 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:59,748 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:59,748 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:59,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:27:59,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:27:59,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:59,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:59,750 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:59,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:59,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:59,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:59,750 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:27:59,751 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:27:59,751 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:27:59,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:59,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:59,752 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:59,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:59,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:59,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:59,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:59,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:59,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:59,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:59,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:59,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:59,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:59,754 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2021-10-11 02:27:59,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:00,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:00,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:00,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:00,024 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:00,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-11 02:28:00,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data/6fde65f4d/7614ece84d8448be93851cf9835905b8/FLAG05a35f205 [2021-10-11 02:28:00,657 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:00,657 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-11 02:28:00,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data/6fde65f4d/7614ece84d8448be93851cf9835905b8/FLAG05a35f205 [2021-10-11 02:28:00,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data/6fde65f4d/7614ece84d8448be93851cf9835905b8 [2021-10-11 02:28:00,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:00,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:00,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:00,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:01,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:01,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:00" (1/1) ... [2021-10-11 02:28:01,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316e05ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:01, skipping insertion in model container [2021-10-11 02:28:01,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:00" (1/1) ... [2021-10-11 02:28:01,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:01,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:01,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:01,456 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) [2021-10-11 02:28:01,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57e91032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:01, skipping insertion in model container [2021-10-11 02:28:01,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:01,458 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:28:01,460 INFO L168 Benchmark]: Toolchain (without parser) took 470.10 ms. Allocated memory is still 98.6 MB. Free memory was 64.6 MB in the beginning and 73.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:01,461 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 98.6 MB. Free memory was 54.4 MB in the beginning and 54.3 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:01,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.86 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 73.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:01,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 98.6 MB. Free memory was 54.4 MB in the beginning and 54.3 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 459.86 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 73.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 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 0.2.0-7b2dab5 [2021-10-11 02:28:03,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:03,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:03,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:03,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:03,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:03,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:03,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:03,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:03,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:03,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:03,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:03,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:03,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:03,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:03,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:03,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:03,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:03,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:03,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:03,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:03,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:03,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:03,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:03,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:03,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:03,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:03,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:03,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:03,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:03,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:03,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:03,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:03,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:03,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:03,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:03,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:03,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:03,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:03,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:03,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:03,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:28:03,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:03,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:03,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:03,862 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:03,862 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:03,863 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:03,863 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:03,863 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:03,863 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:03,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:28:03,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:28:03,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:03,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:03,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:28:03,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:03,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:03,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:03,867 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:28:03,867 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:28:03,867 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:28:03,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:03,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:03,868 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:28:03,868 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:28:03,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:03,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:03,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:03,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:28:03,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:03,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:03,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:03,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:03,870 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:28:03,870 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:03,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:03,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:03,871 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_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2021-10-11 02:28:04,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:04,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:04,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:04,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:04,306 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:04,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-11 02:28:04,377 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data/4163ef8bb/cd795443a43e49cfb7f30886f5777fe4/FLAG0a15b0d55 [2021-10-11 02:28:05,044 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:05,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-11 02:28:05,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data/4163ef8bb/cd795443a43e49cfb7f30886f5777fe4/FLAG0a15b0d55 [2021-10-11 02:28:05,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/data/4163ef8bb/cd795443a43e49cfb7f30886f5777fe4 [2021-10-11 02:28:05,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:05,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:05,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:05,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:05,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:05,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea7808c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05, skipping insertion in model container [2021-10-11 02:28:05,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:05,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:05,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:05,759 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:28:05,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:05,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:05,834 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:05,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:05,957 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:05,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05 WrapperNode [2021-10-11 02:28:05,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:05,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:05,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:05,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:05,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:06,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:06,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:06,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:06,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:06,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:06,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:06,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:06,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:06,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:28:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:28:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:28:06,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:28:06,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:06,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:06,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:06,673 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:28:06,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:06 BoogieIcfgContainer [2021-10-11 02:28:06,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:06,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:06,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:06,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:06,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:05" (1/3) ... [2021-10-11 02:28:06,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae6916e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:06, skipping insertion in model container [2021-10-11 02:28:06,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (2/3) ... [2021-10-11 02:28:06,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae6916e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:06, skipping insertion in model container [2021-10-11 02:28:06,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:06" (3/3) ... [2021-10-11 02:28:06,685 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-10-11 02:28:06,699 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:06,703 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2021-10-11 02:28:06,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-11 02:28:06,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:06,748 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:28:06,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:06,749 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:06,749 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:06,749 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:06,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:06,749 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-10-11 02:28:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:06,775 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:06,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:06,776 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:28:06,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:06,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2021-10-11 02:28:06,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:06,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066032037] [2021-10-11 02:28:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:28:07,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:07,111 INFO L382 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 [2021-10-11 02:28:07,114 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:07,124 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:07,125 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:07,125 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:28:07,222 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:07,223 INFO L382 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 12 treesize of output 28 [2021-10-11 02:28:07,230 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:07,252 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2021-10-11 02:28:07,254 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:07,255 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2021-10-11 02:28:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:07,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:07,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066032037] [2021-10-11 02:28:07,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:07,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:07,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81295980] [2021-10-11 02:28:07,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:07,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:07,305 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2021-10-11 02:28:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:07,482 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-10-11 02:28:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:07,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:28:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:07,493 INFO L225 Difference]: With dead ends: 30 [2021-10-11 02:28:07,493 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:28:07,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:28:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:28:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:28:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:28:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-10-11 02:28:07,527 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 9 [2021-10-11 02:28:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:07,528 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-10-11 02:28:07,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-10-11 02:28:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:07,529 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:07,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:07,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:28:07,752 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:28:07,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:07,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2021-10-11 02:28:07,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:07,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298763201] [2021-10-11 02:28:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:07,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:28:07,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:07,854 INFO L382 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 [2021-10-11 02:28:07,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:07,872 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:07,879 INFO L382 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 [2021-10-11 02:28:07,881 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:07,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:07,900 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:07,900 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:16 [2021-10-11 02:28:08,034 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:08,035 INFO L382 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 11 treesize of output 15 [2021-10-11 02:28:08,050 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:08,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:08,085 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-11 02:28:08,088 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:08,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:08,108 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:08,108 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2021-10-11 02:28:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:08,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:08,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298763201] [2021-10-11 02:28:08,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:08,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:08,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727344832] [2021-10-11 02:28:08,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:08,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:08,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:08,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:08,198 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 5 states. [2021-10-11 02:28:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:08,411 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-11 02:28:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:28:08,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:28:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:08,413 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:28:08,413 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 02:28:08,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:28:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 02:28:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-11 02:28:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:28:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-11 02:28:08,417 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 9 [2021-10-11 02:28:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:08,418 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-11 02:28:08,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-11 02:28:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:28:08,418 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:08,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:08,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:28:08,634 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:28:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541525, now seen corresponding path program 1 times [2021-10-11 02:28:08,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:08,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717733345] [2021-10-11 02:28:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:08,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:28:08,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:08,764 INFO L382 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 [2021-10-11 02:28:08,766 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:08,776 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:08,780 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:08,781 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2021-10-11 02:28:08,879 INFO L382 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 [2021-10-11 02:28:08,881 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:08,895 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:08,901 INFO L382 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 [2021-10-11 02:28:08,902 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:08,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:08,923 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:08,923 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2021-10-11 02:28:08,992 INFO L382 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 15 treesize of output 7 [2021-10-11 02:28:08,995 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,009 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:09,013 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-10-11 02:28:09,015 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,022 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:09,024 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,024 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:9 [2021-10-11 02:28:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:09,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:09,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717733345] [2021-10-11 02:28:09,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:09,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:28:09,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331245520] [2021-10-11 02:28:09,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:28:09,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:09,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:28:09,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:09,061 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 7 states. [2021-10-11 02:28:09,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:09,395 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-11 02:28:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:28:09,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-10-11 02:28:09,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:09,396 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:28:09,396 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:28:09,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:28:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:28:09,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:28:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:28:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-10-11 02:28:09,399 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 12 [2021-10-11 02:28:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:09,400 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-10-11 02:28:09,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:28:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-10-11 02:28:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:28:09,400 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:09,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:09,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:28:09,615 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:28:09,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541524, now seen corresponding path program 1 times [2021-10-11 02:28:09,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:09,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492275207] [2021-10-11 02:28:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:09,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:09,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:09,686 INFO L382 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 [2021-10-11 02:28:09,687 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:09,690 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,691 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:28:09,727 INFO L382 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 [2021-10-11 02:28:09,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:09,738 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,739 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2021-10-11 02:28:09,766 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-10-11 02:28:09,768 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,771 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:09,772 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:09,772 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2021-10-11 02:28:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:09,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:09,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492275207] [2021-10-11 02:28:09,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:09,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:28:09,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804089604] [2021-10-11 02:28:09,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:28:09,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:09,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:28:09,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:09,789 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 7 states. [2021-10-11 02:28:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:10,056 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-11 02:28:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:28:10,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-10-11 02:28:10,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:10,060 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:28:10,060 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:28:10,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:28:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:28:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-11 02:28:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:28:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-11 02:28:10,063 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 12 [2021-10-11 02:28:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:10,063 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-11 02:28:10,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:28:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-11 02:28:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:28:10,064 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:10,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:10,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:28:10,270 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:28:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:10,271 INFO L82 PathProgramCache]: Analyzing trace with hash -254138953, now seen corresponding path program 1 times [2021-10-11 02:28:10,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:10,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060479963] [2021-10-11 02:28:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:10,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:10,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:10,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:10,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060479963] [2021-10-11 02:28:10,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:10,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:10,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980099679] [2021-10-11 02:28:10,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:10,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:10,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:10,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:10,466 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 6 states. [2021-10-11 02:28:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:10,628 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-11 02:28:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:28:10,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-10-11 02:28:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:10,630 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:28:10,630 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:28:10,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:28:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:28:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 02:28:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:28:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-11 02:28:10,633 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 16 [2021-10-11 02:28:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:10,633 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-11 02:28:10,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-11 02:28:10,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:28:10,634 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:10,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:10,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:28:10,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:28:10,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:10,835 INFO L82 PathProgramCache]: Analyzing trace with hash 585604346, now seen corresponding path program 1 times [2021-10-11 02:28:10,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:10,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199984231] [2021-10-11 02:28:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad129fe1-d96c-42e0-8f5e-8ab14d849555/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:10,922 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:10,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:11,014 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:28:11,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:28:11,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:28:11,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:11 BoogieIcfgContainer [2021-10-11 02:28:11,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:11,257 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:11,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:11,259 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:11,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:06" (3/4) ... [2021-10-11 02:28:11,263 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:28:11,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:11,271 INFO L168 Benchmark]: Toolchain (without parser) took 5946.55 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 56.8 MB in the beginning and 47.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,271 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory is still 40.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:11,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.34 ms. Allocated memory is still 75.5 MB. Free memory was 56.6 MB in the beginning and 44.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.42 ms. Allocated memory is still 75.5 MB. Free memory was 44.9 MB in the beginning and 42.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,273 INFO L168 Benchmark]: Boogie Preprocessor took 47.52 ms. Allocated memory is still 75.5 MB. Free memory was 42.9 MB in the beginning and 41.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:11,275 INFO L168 Benchmark]: RCFGBuilder took 599.17 ms. Allocated memory is still 75.5 MB. Free memory was 41.5 MB in the beginning and 45.8 MB in the end (delta: -4.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,278 INFO L168 Benchmark]: TraceAbstraction took 4579.70 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.4 MB in the beginning and 47.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:11,278 INFO L168 Benchmark]: Witness Printer took 6.40 ms. Allocated memory is still 92.3 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:11,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory is still 40.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 639.34 ms. Allocated memory is still 75.5 MB. Free memory was 56.6 MB in the beginning and 44.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.42 ms. Allocated memory is still 75.5 MB. Free memory was 44.9 MB in the beginning and 42.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.52 ms. Allocated memory is still 75.5 MB. Free memory was 42.9 MB in the beginning and 41.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 599.17 ms. Allocated memory is still 75.5 MB. Free memory was 41.5 MB in the beginning and 45.8 MB in the end (delta: -4.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4579.70 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.4 MB in the beginning and 47.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.40 ms. Allocated memory is still 92.3 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L569] struct node* s = alloc_node(); [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L570] s->next = alloc_node() [L571] EXPR s->next [L571] *s = *(s->next) [L572] free(s) [L572] free(s) [L572] free(s) [L573] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 197 SDslu, 35 SDs, 0 SdLazy, 199 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 4 QuantifiedInterpolants, 4651 SizeOfPredicates, 29 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...