./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/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_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG --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 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/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_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG --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 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:32:32,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:32:32,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:32:32,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:32:32,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:32:32,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:32:32,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:32:32,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:32:32,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:32:32,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:32:32,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:32:32,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:32:32,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:32:32,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:32:32,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:32:32,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:32:32,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:32:32,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:32:32,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:32:32,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:32:32,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:32:32,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:32:32,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:32:32,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:32:32,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:32:32,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:32:32,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:32:32,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:32:32,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:32:32,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:32:32,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:32:32,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:32:32,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:32:32,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:32:32,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:32:32,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:32:32,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:32:32,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:32:32,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:32:32,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:32:32,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:32:32,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:32:32,809 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:32:32,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:32:32,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:32:32,817 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:32:32,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:32:32,818 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:32:32,818 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:32:32,818 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:32:32,819 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:32:32,819 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:32:32,820 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:32:32,820 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:32:32,820 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:32:32,821 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:32:32,821 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:32:32,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:32:32,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:32:32,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:32:32,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:32:32,823 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:32:32,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:32:32,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:32:32,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:32:32,824 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:32:32,824 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:32:32,824 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:32:32,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:32:32,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:32:32,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:32:32,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:32:32,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:32:32,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:32:32,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:32:32,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:32:32,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:32:32,827 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:32:32,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:32:32,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:32:32,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:32:32,828 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_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-29 05:32:33,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:32:33,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:32:33,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:32:33,115 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:32:33,116 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:32:33,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-29 05:32:33,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data/ee50f265a/7ec5026e9de4443798fb6026e3513095/FLAG2fd657966 [2021-10-29 05:32:33,696 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:32:33,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-29 05:32:33,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data/ee50f265a/7ec5026e9de4443798fb6026e3513095/FLAG2fd657966 [2021-10-29 05:32:34,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data/ee50f265a/7ec5026e9de4443798fb6026e3513095 [2021-10-29 05:32:34,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:32:34,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:32:34,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:32:34,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:32:34,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:32:34,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:32:34" (1/1) ... [2021-10-29 05:32:34,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fb554c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:34, skipping insertion in model container [2021-10-29 05:32:34,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:32:34" (1/1) ... [2021-10-29 05:32:34,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:32:34,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:32:34,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:32:34,445 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-29 05:32:34,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@289ac87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:34, skipping insertion in model container [2021-10-29 05:32:34,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:32:34,447 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:32:34,449 INFO L168 Benchmark]: Toolchain (without parser) took 413.74 ms. Allocated memory is still 104.9 MB. Free memory was 82.4 MB in the beginning and 80.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:34,450 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory was 56.8 MB in the beginning and 56.7 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:32:34,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.21 ms. Allocated memory is still 104.9 MB. Free memory was 82.4 MB in the beginning and 80.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:34,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory was 56.8 MB in the beginning and 56.7 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 411.21 ms. Allocated memory is still 104.9 MB. Free memory was 82.4 MB in the beginning and 80.1 MB in the end (delta: 2.3 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:32:36,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:32:36,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:32:36,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:32:36,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:32:36,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:32:36,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:32:36,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:32:36,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:32:36,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:32:36,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:32:36,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:32:36,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:32:36,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:32:36,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:32:36,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:32:36,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:32:36,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:32:36,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:32:36,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:32:36,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:32:36,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:32:36,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:32:36,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:32:36,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:32:36,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:32:36,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:32:36,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:32:36,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:32:36,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:32:36,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:32:36,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:32:36,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:32:36,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:32:36,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:32:36,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:32:36,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:32:36,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:32:36,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:32:36,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:32:36,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:32:36,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 05:32:36,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:32:36,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:32:36,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:32:36,920 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:32:36,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:32:36,920 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:32:36,920 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:32:36,920 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:32:36,921 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:32:36,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:32:36,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:32:36,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:32:36,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:32:36,924 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:32:36,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:32:36,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:32:36,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:32:36,925 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:32:36,925 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:32:36,925 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:32:36,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:32:36,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:32:36,926 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:32:36,926 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:32:36,926 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:32:36,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:32:36,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:32:36,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:32:36,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:32:36,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:32:36,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:32:36,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:32:36,928 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:32:36,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:32:36,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:32:36,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:32:36,929 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_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-29 05:32:37,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:32:37,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:32:37,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:32:37,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:32:37,338 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:32:37,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-29 05:32:37,404 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data/80b9a3c78/97d0d90adcd64e1c9612931e04cefd6c/FLAG600be1b84 [2021-10-29 05:32:37,988 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:32:37,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-29 05:32:38,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data/80b9a3c78/97d0d90adcd64e1c9612931e04cefd6c/FLAG600be1b84 [2021-10-29 05:32:38,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/data/80b9a3c78/97d0d90adcd64e1c9612931e04cefd6c [2021-10-29 05:32:38,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:32:38,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:32:38,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:32:38,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:32:38,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:32:38,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5878cf10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38, skipping insertion in model container [2021-10-29 05:32:38,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:32:38,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:32:38,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:32:38,603 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:32:38,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:32:38,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:32:38,666 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:32:38,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:32:38,767 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:32:38,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38 WrapperNode [2021-10-29 05:32:38,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:32:38,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:32:38,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:32:38,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:32:38,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:32:38,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:32:38,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:32:38,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:32:38,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:32:38,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:32:38,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:32:38,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:32:38,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (1/1) ... [2021-10-29 05:32:38,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:32:38,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:32:38,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:32:38,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:32:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:32:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:32:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 05:32:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:32:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:32:38,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:32:39,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:32:39,293 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-29 05:32:39,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:32:39 BoogieIcfgContainer [2021-10-29 05:32:39,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:32:39,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:32:39,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:32:39,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:32:39,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:32:38" (1/3) ... [2021-10-29 05:32:39,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b425ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:32:39, skipping insertion in model container [2021-10-29 05:32:39,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:38" (2/3) ... [2021-10-29 05:32:39,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b425ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:32:39, skipping insertion in model container [2021-10-29 05:32:39,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:32:39" (3/3) ... [2021-10-29 05:32:39,329 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-10-29 05:32:39,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:32:39,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-29 05:32:39,413 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:32:39,419 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:32:39,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-29 05:32:39,433 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) [2021-10-29 05:32:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:32:39,439 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:39,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:32:39,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-29 05:32:39,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:39,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2021-10-29 05:32:39,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:32:39,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630288599] [2021-10-29 05:32:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:39,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:32:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:32:39,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:32:39,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:32:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:32:39,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:32:39,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:39,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:32:39,693 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 05:32:39,694 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 [2021-10-29 05:32:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:39,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:32:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:39,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:39,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630288599] [2021-10-29 05:32:39,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630288599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:32:39,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:39,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-29 05:32:39,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362510210] [2021-10-29 05:32:39,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:32:39,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:32:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:32:39,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:32:39,998 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) [2021-10-29 05:32:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:32:40,200 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-10-29 05:32:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:32:40,202 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 [2021-10-29 05:32:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:32:40,210 INFO L225 Difference]: With dead ends: 30 [2021-10-29 05:32:40,210 INFO L226 Difference]: Without dead ends: 26 [2021-10-29 05:32:40,214 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 [2021-10-29 05:32:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-29 05:32:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-29 05:32:40,247 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) [2021-10-29 05:32:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-10-29 05:32:40,250 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 9 [2021-10-29 05:32:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:32:40,250 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-10-29 05:32:40,250 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) [2021-10-29 05:32:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-10-29 05:32:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:32:40,251 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:40,252 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:32:40,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:40,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:40,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-29 05:32:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2021-10-29 05:32:40,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:32:40,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881733962] [2021-10-29 05:32:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:40,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:32:40,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:32:40,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:32:40,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:32:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:32:40,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:32:40,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:40,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:32:40,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:32:40,647 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 05:32:40,647 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 [2021-10-29 05:32:40,659 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:32:40,660 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 [2021-10-29 05:32:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:40,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:32:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:43,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:43,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881733962] [2021-10-29 05:32:43,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881733962] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:32:43,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:43,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:32:43,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074365910] [2021-10-29 05:32:43,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:32:43,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:32:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:32:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:32:43,399 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) [2021-10-29 05:32:47,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:32:47,859 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-29 05:32:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:32:47,876 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 [2021-10-29 05:32:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:32:47,877 INFO L225 Difference]: With dead ends: 22 [2021-10-29 05:32:47,877 INFO L226 Difference]: Without dead ends: 22 [2021-10-29 05:32:47,878 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 [2021-10-29 05:32:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-29 05:32:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-29 05:32:47,881 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) [2021-10-29 05:32:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-29 05:32:47,882 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 9 [2021-10-29 05:32:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:32:47,882 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-29 05:32:47,882 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) [2021-10-29 05:32:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-29 05:32:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:32:47,883 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:47,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:32:47,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 05:32:48,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:48,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-29 05:32:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1063541525, now seen corresponding path program 1 times [2021-10-29 05:32:48,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:32:48,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459066295] [2021-10-29 05:32:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:48,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:32:48,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:32:48,091 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:32:48,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:32:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:32:48,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 05:32:48,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:48,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:32:48,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:32:48,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-29 05:32:48,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-29 05:32:48,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-29 05:32:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:48,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:32:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:49,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:49,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459066295] [2021-10-29 05:32:49,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459066295] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:32:49,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:49,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 05:32:49,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543913298] [2021-10-29 05:32:49,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:32:49,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:32:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:32:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:32:49,042 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) [2021-10-29 05:32:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:32:49,726 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-29 05:32:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:32:49,728 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 [2021-10-29 05:32:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:32:49,728 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:32:49,729 INFO L226 Difference]: Without dead ends: 21 [2021-10-29 05:32:49,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:32:49,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-29 05:32:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-29 05:32:49,731 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) [2021-10-29 05:32:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-10-29 05:32:49,732 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 12 [2021-10-29 05:32:49,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:32:49,733 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-10-29 05:32:49,733 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) [2021-10-29 05:32:49,733 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-10-29 05:32:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:32:49,734 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:49,734 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:32:49,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:49,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:49,945 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-29 05:32:49,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1063541524, now seen corresponding path program 1 times [2021-10-29 05:32:49,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:32:49,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167812536] [2021-10-29 05:32:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:49,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:32:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:32:49,947 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:32:49,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:32:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:32:50,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:32:50,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:50,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:32:50,097 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 [2021-10-29 05:32:50,140 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 [2021-10-29 05:32:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:50,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:32:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:50,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:50,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167812536] [2021-10-29 05:32:50,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167812536] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:32:50,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:50,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-29 05:32:50,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757213065] [2021-10-29 05:32:50,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:32:50,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:32:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:32:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:32:50,270 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) [2021-10-29 05:32:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:32:50,585 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-29 05:32:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:32:50,585 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 [2021-10-29 05:32:50,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:32:50,586 INFO L225 Difference]: With dead ends: 20 [2021-10-29 05:32:50,586 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:32:50,587 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 [2021-10-29 05:32:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:32:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 05:32:50,589 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) [2021-10-29 05:32:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-29 05:32:50,589 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 12 [2021-10-29 05:32:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:32:50,590 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-29 05:32:50,590 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) [2021-10-29 05:32:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-29 05:32:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:32:50,591 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:50,591 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:32:50,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:50,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:50,802 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)] === [2021-10-29 05:32:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -254138953, now seen corresponding path program 1 times [2021-10-29 05:32:50,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:32:50,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492771140] [2021-10-29 05:32:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:50,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:32:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:32:50,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:32:50,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:32:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:32:50,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:32:50,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:51,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:32:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:51,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:51,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492771140] [2021-10-29 05:32:51,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492771140] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:32:51,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:51,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-29 05:32:51,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708424866] [2021-10-29 05:32:51,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:32:51,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:32:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:32:51,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:32:51,349 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) [2021-10-29 05:32:51,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:32:51,568 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-29 05:32:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:32:51,569 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 [2021-10-29 05:32:51,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:32:51,569 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:32:51,570 INFO L226 Difference]: Without dead ends: 19 [2021-10-29 05:32:51,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:32:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-29 05:32:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-29 05:32:51,572 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) [2021-10-29 05:32:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-29 05:32:51,572 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 16 [2021-10-29 05:32:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:32:51,573 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-29 05:32:51,573 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) [2021-10-29 05:32:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-29 05:32:51,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:32:51,573 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:51,574 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:32:51,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:51,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:51,783 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)] === [2021-10-29 05:32:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash 585604346, now seen corresponding path program 1 times [2021-10-29 05:32:51,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:32:51,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853007980] [2021-10-29 05:32:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:51,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:32:51,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:32:51,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:32:51,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:32:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:32:51,896 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:32:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:32:51,960 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:32:51,960 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:32:51,961 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:32:51,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:32:51,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:32:51,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 05:32:51,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 05:32:51,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-29 05:32:51,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 05:32:51,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 05:32:51,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-29 05:32:51,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:51,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:51,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:32:51,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:52,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:52,168 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 05:32:52,171 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:32:52,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:32:52 BoogieIcfgContainer [2021-10-29 05:32:52,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:32:52,192 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:32:52,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:32:52,192 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:32:52,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:32:39" (3/4) ... [2021-10-29 05:32:52,195 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:32:52,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:32:52,196 INFO L168 Benchmark]: Toolchain (without parser) took 13953.80 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 45.9 MB in the beginning and 42.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:52,197 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 67.1 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:32:52,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.44 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 44.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:52,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.03 ms. Allocated memory is still 67.1 MB. Free memory was 44.4 MB in the beginning and 42.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:52,198 INFO L168 Benchmark]: Boogie Preprocessor took 23.77 ms. Allocated memory is still 67.1 MB. Free memory was 42.5 MB in the beginning and 41.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:52,199 INFO L168 Benchmark]: RCFGBuilder took 451.48 ms. Allocated memory is still 67.1 MB. Free memory was 41.2 MB in the beginning and 30.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:52,199 INFO L168 Benchmark]: TraceAbstraction took 12894.10 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 29.7 MB in the beginning and 42.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:52,200 INFO L168 Benchmark]: Witness Printer took 3.67 ms. Allocated memory is still 88.1 MB. Free memory was 42.8 MB in the beginning and 42.1 MB in the end (delta: 731.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:32:52,203 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 67.1 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 522.44 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 44.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.03 ms. Allocated memory is still 67.1 MB. Free memory was 44.4 MB in the beginning and 42.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.77 ms. Allocated memory is still 67.1 MB. Free memory was 42.5 MB in the beginning and 41.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 451.48 ms. Allocated memory is still 67.1 MB. Free memory was 41.2 MB in the beginning and 30.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12894.10 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 29.7 MB in the beginning and 42.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.67 ms. Allocated memory is still 88.1 MB. Free memory was 42.8 MB in the beginning and 42.1 MB in the end (delta: 731.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 12.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 200 SDslu, 44 SDs, 0 SdLazy, 228 SolverSat, 28 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 39, 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 [2021-10-29 05:32:52,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95cc7249-1600-4697-b140-2b1e95324d08/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...