./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/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_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:11:46,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:11:46,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:11:46,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:11:46,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:11:46,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:11:46,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:11:46,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:11:46,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:11:46,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:11:46,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:11:46,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:11:46,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:11:46,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:11:46,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:11:46,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:11:46,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:11:46,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:11:46,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:11:46,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:11:46,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:11:46,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:11:46,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:11:46,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:11:46,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:11:46,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:11:46,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:11:46,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:11:46,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:11:46,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:11:46,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:11:46,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:11:46,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:11:46,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:11:46,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:11:46,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:11:46,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:11:46,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:11:46,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:11:46,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:11:46,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:11:46,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 05:11:46,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:11:46,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:11:46,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:11:46,848 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:11:46,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:11:46,849 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:11:46,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:11:46,849 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:11:46,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:11:46,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:11:46,850 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:11:46,850 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:11:46,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:11:46,851 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:11:46,851 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:11:46,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:11:46,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:11:46,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:11:46,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:11:46,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:11:46,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:11:46,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:11:46,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:11:46,853 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:11:46,854 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:11:46,854 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:11:46,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:11:46,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:11:46,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:11:46,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:11:46,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:11:46,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:11:46,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:11:46,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:11:46,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:11:46,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:11:46,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:11:46,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:11:46,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:11:46,857 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_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-11-03 05:11:47,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:11:47,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:11:47,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:11:47,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:11:47,138 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:11:47,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-03 05:11:47,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data/cfb308be0/bcde3469e3684d73bf4c0f33001f03f5/FLAG2b5557f6b [2021-11-03 05:11:47,722 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:11:47,722 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-03 05:11:47,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data/cfb308be0/bcde3469e3684d73bf4c0f33001f03f5/FLAG2b5557f6b [2021-11-03 05:11:48,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data/cfb308be0/bcde3469e3684d73bf4c0f33001f03f5 [2021-11-03 05:11:48,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:11:48,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:11:48,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:11:48,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:11:48,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:11:48,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:11:48" (1/1) ... [2021-11-03 05:11:48,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e52d589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:48, skipping insertion in model container [2021-11-03 05:11:48,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:11:48" (1/1) ... [2021-11-03 05:11:48,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:11:48,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:11:48,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:11:48,418 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 05:11:48,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@282d5e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:48, skipping insertion in model container [2021-11-03 05:11:48,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:11:48,419 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:11:48,421 INFO L168 Benchmark]: Toolchain (without parser) took 367.25 ms. Allocated memory is still 102.8 MB. Free memory was 66.7 MB in the beginning and 77.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:11:48,422 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 77.6 MB. Free memory was 52.1 MB in the beginning and 52.1 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:11:48,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.87 ms. Allocated memory is still 102.8 MB. Free memory was 66.5 MB in the beginning and 78.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:11:48,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 77.6 MB. Free memory was 52.1 MB in the beginning and 52.1 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.87 ms. Allocated memory is still 102.8 MB. Free memory was 66.5 MB in the beginning and 78.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/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_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:11:50,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:11:50,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:11:50,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:11:50,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:11:50,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:11:50,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:11:50,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:11:50,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:11:50,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:11:50,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:11:50,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:11:50,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:11:50,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:11:50,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:11:50,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:11:50,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:11:50,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:11:50,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:11:50,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:11:50,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:11:50,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:11:50,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:11:50,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:11:50,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:11:50,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:11:50,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:11:50,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:11:50,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:11:50,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:11:50,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:11:50,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:11:50,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:11:50,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:11:50,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:11:50,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:11:50,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:11:50,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:11:50,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:11:50,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:11:50,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:11:50,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 05:11:50,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:11:50,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:11:50,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:11:50,726 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:11:50,726 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:11:50,726 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:11:50,726 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:11:50,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:11:50,726 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:11:50,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:11:50,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:11:50,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:11:50,729 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:11:50,730 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:11:50,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:11:50,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:11:50,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:11:50,730 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:11:50,730 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:11:50,731 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:11:50,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:11:50,731 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:11:50,731 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:11:50,731 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:11:50,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:11:50,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:11:50,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:11:50,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:11:50,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:11:50,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:11:50,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:11:50,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:11:50,734 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:11:50,734 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:11:50,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:11:50,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:11:50,734 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_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-11-03 05:11:51,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:11:51,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:11:51,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:11:51,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:11:51,140 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:11:51,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-03 05:11:51,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data/92f9da9f5/13c34aab036b4975869c86cb6b8bb606/FLAG21ba0e9ab [2021-11-03 05:11:51,871 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:11:51,872 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-11-03 05:11:51,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data/92f9da9f5/13c34aab036b4975869c86cb6b8bb606/FLAG21ba0e9ab [2021-11-03 05:11:52,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/data/92f9da9f5/13c34aab036b4975869c86cb6b8bb606 [2021-11-03 05:11:52,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:11:52,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:11:52,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:11:52,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:11:52,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:11:52,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e2a352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52, skipping insertion in model container [2021-11-03 05:11:52,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:11:52,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:11:52,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:11:52,644 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:11:52,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:11:52,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:11:52,698 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:11:52,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:11:52,775 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:11:52,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52 WrapperNode [2021-11-03 05:11:52,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:11:52,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:11:52,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:11:52,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:11:52,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:11:52,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:11:52,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:11:52,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:11:52,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:11:52,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:11:52,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:11:52,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:11:52,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (1/1) ... [2021-11-03 05:11:52,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:11:52,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:11:52,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:11:52,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:11:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:11:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:11:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:11:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:11:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:11:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:11:53,320 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:11:53,321 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-03 05:11:53,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:11:53 BoogieIcfgContainer [2021-11-03 05:11:53,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:11:53,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:11:53,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:11:53,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:11:53,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:11:52" (1/3) ... [2021-11-03 05:11:53,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311aebab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:11:53, skipping insertion in model container [2021-11-03 05:11:53,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:11:52" (2/3) ... [2021-11-03 05:11:53,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311aebab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:11:53, skipping insertion in model container [2021-11-03 05:11:53,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:11:53" (3/3) ... [2021-11-03 05:11:53,330 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-11-03 05:11:53,335 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:11:53,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-03 05:11:53,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:11:53,404 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:11:53,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-03 05:11:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:11:53,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:53,433 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:11:53,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-03 05:11:53,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:53,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2021-11-03 05:11:53,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:53,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243404304] [2021-11-03 05:11:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:53,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:53,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:53,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:53,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:11:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:53,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:11:53,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:53,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:11:53,801 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 05:11:53,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-03 05:11:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:53,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:53,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:53,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243404304] [2021-11-03 05:11:53,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243404304] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:53,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:11:53,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:11:53,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428261097] [2021-11-03 05:11:53,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:11:53,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:11:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:11:53,993 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:54,158 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-03 05:11:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:11:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 05:11:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:54,167 INFO L225 Difference]: With dead ends: 30 [2021-11-03 05:11:54,167 INFO L226 Difference]: Without dead ends: 26 [2021-11-03 05:11:54,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:11:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-03 05:11:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-03 05:11:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 25 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-11-03 05:11:54,213 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 9 [2021-11-03 05:11:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:54,214 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-11-03 05:11:54,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-11-03 05:11:54,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:11:54,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:54,215 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:11:54,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:11:54,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:11:54,426 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-03 05:11:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2021-11-03 05:11:54,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:54,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353403914] [2021-11-03 05:11:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:54,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:54,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:54,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:54,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:11:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:54,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:11:54,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:54,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:11:54,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:11:54,676 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 05:11:54,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-03 05:11:54,704 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:11:54,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-03 05:11:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:54,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:57,573 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:57,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353403914] [2021-11-03 05:11:57,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353403914] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:57,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:11:57,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 05:11:57,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680007337] [2021-11-03 05:11:57,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:11:57,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:11:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:11:57,577 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:58,043 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-11-03 05:11:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:11:58,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 05:11:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:58,046 INFO L225 Difference]: With dead ends: 22 [2021-11-03 05:11:58,046 INFO L226 Difference]: Without dead ends: 22 [2021-11-03 05:11:58,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:11:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-03 05:11:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-03 05:11:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-11-03 05:11:58,050 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 9 [2021-11-03 05:11:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:58,051 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-11-03 05:11:58,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-11-03 05:11:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:11:58,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:58,052 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:11:58,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:11:58,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:11:58,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-03 05:11:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:58,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1063541525, now seen corresponding path program 1 times [2021-11-03 05:11:58,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:58,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782622276] [2021-11-03 05:11:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:58,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:58,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:58,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:58,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:11:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:58,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:11:58,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:58,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:11:58,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 05:11:58,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-03 05:11:58,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-03 05:11:58,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-03 05:11:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:58,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:59,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:59,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782622276] [2021-11-03 05:11:59,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782622276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:59,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:11:59,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-03 05:11:59,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480133530] [2021-11-03 05:11:59,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:11:59,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:11:59,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:11:59,143 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:59,675 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-11-03 05:11:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:11:59,676 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 05:11:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:59,677 INFO L225 Difference]: With dead ends: 21 [2021-11-03 05:11:59,677 INFO L226 Difference]: Without dead ends: 21 [2021-11-03 05:11:59,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:11:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-03 05:11:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-03 05:11:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-11-03 05:11:59,680 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 12 [2021-11-03 05:11:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:59,681 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-11-03 05:11:59,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-11-03 05:11:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:11:59,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:59,682 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:11:59,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:59,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:11:59,884 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-03 05:11:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1063541524, now seen corresponding path program 1 times [2021-11-03 05:11:59,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:59,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230702831] [2021-11-03 05:11:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:59,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:59,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:59,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:59,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:11:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:59,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:11:59,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:59,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:12:00,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-03 05:12:00,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-11-03 05:12:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:00,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:00,183 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:12:00,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230702831] [2021-11-03 05:12:00,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230702831] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:12:00,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:12:00,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 05:12:00,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225990198] [2021-11-03 05:12:00,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:12:00,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:12:00,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:12:00,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:12:00,185 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:12:00,447 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-11-03 05:12:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:12:00,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 05:12:00,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:12:00,449 INFO L225 Difference]: With dead ends: 20 [2021-11-03 05:12:00,449 INFO L226 Difference]: Without dead ends: 20 [2021-11-03 05:12:00,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:12:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-03 05:12:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-03 05:12:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-11-03 05:12:00,452 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 12 [2021-11-03 05:12:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:12:00,453 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-11-03 05:12:00,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-11-03 05:12:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:12:00,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:00,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:12:00,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:00,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:12:00,654 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-03 05:12:00,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:00,655 INFO L85 PathProgramCache]: Analyzing trace with hash -254138953, now seen corresponding path program 1 times [2021-11-03 05:12:00,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:00,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953954717] [2021-11-03 05:12:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:00,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:00,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:00,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:00,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:12:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:00,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:12:00,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:00,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:01,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:12:01,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953954717] [2021-11-03 05:12:01,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953954717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:12:01,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:12:01,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-03 05:12:01,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62395264] [2021-11-03 05:12:01,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:12:01,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:12:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:12:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:12:01,105 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:12:01,253 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-11-03 05:12:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:12:01,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 05:12:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:12:01,254 INFO L225 Difference]: With dead ends: 19 [2021-11-03 05:12:01,255 INFO L226 Difference]: Without dead ends: 19 [2021-11-03 05:12:01,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:12:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-03 05:12:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-03 05:12:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-11-03 05:12:01,258 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 16 [2021-11-03 05:12:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:12:01,259 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-11-03 05:12:01,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-11-03 05:12:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 05:12:01,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:01,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:12:01,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:01,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:12:01,461 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-11-03 05:12:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 585604346, now seen corresponding path program 1 times [2021-11-03 05:12:01,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:01,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217516280] [2021-11-03 05:12:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:01,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:01,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:01,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:01,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:12:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:12:01,614 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:12:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:12:01,668 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-03 05:12:01,668 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:12:01,669 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-11-03 05:12:01,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-11-03 05:12:01,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-11-03 05:12:01,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-11-03 05:12:01,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-11-03 05:12:01,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-11-03 05:12:01,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-11-03 05:12:01,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-11-03 05:12:01,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-11-03 05:12:01,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-11-03 05:12:01,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-11-03 05:12:01,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-11-03 05:12:01,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:01,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:12:01,876 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-03 05:12:01,878 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:12:01,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:12:01 BoogieIcfgContainer [2021-11-03 05:12:01,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:12:01,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:12:01,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:12:01,901 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:12:01,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:11:53" (3/4) ... [2021-11-03 05:12:01,904 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:12:01,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:12:01,906 INFO L168 Benchmark]: Toolchain (without parser) took 9679.93 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 49.7 MB in the beginning and 77.0 MB in the end (delta: -27.3 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:12:01,906 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 67.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:12:01,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.36 ms. Allocated memory is still 86.0 MB. Free memory was 49.5 MB in the beginning and 56.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:12:01,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.92 ms. Allocated memory is still 86.0 MB. Free memory was 56.1 MB in the beginning and 54.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:12:01,908 INFO L168 Benchmark]: Boogie Preprocessor took 51.23 ms. Allocated memory is still 86.0 MB. Free memory was 54.1 MB in the beginning and 52.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:12:01,908 INFO L168 Benchmark]: RCFGBuilder took 430.26 ms. Allocated memory is still 86.0 MB. Free memory was 52.6 MB in the beginning and 41.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:12:01,909 INFO L168 Benchmark]: TraceAbstraction took 8575.70 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 40.8 MB in the beginning and 78.1 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:12:01,910 INFO L168 Benchmark]: Witness Printer took 4.12 ms. Allocated memory is still 113.2 MB. Free memory was 78.1 MB in the beginning and 77.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:12:01,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 67.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.36 ms. Allocated memory is still 86.0 MB. Free memory was 49.5 MB in the beginning and 56.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.92 ms. Allocated memory is still 86.0 MB. Free memory was 56.1 MB in the beginning and 54.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.23 ms. Allocated memory is still 86.0 MB. Free memory was 54.1 MB in the beginning and 52.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 430.26 ms. Allocated memory is still 86.0 MB. Free memory was 52.6 MB in the beginning and 41.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8575.70 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 40.8 MB in the beginning and 78.1 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.12 ms. Allocated memory is still 113.2 MB. Free memory was 78.1 MB in the beginning and 77.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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; - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 202 SDslu, 44 SDs, 0 SdLazy, 230 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 38, 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, 4.8s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 11 QuantifiedInterpolants, 948 SizeOfPredicates, 24 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 05:12:01,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d48c614-0814-4578-ae93-60fdd1868732/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample