./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ............................................................................................................................................. 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_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:13,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:13,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:13,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:13,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:13,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:13,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:13,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:13,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:13,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:13,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:13,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:13,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:13,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:13,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:13,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:13,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:13,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:13,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:13,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:13,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:13,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:13,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:13,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:13,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:13,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:13,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:13,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:13,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:13,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:13,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:13,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:13,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:13,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:13,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:13,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:13,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:13,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:13,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:13,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:13,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:13,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:28:13,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:13,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:13,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:13,822 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:13,822 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:13,822 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:13,823 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:13,823 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:13,823 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:13,823 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:13,823 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:13,824 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:13,824 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:13,824 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:13,824 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:13,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:28:13,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:28:13,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:13,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:13,826 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:28:13,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:13,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:13,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:13,827 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:28:13,827 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:28:13,827 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:28:13,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:13,827 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:13,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:13,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:13,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:13,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:13,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:13,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:13,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:13,829 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:13,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:13,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:13,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:13,830 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_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2021-10-11 02:28:14,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:14,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:14,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:14,132 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:14,139 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:14,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-11 02:28:14,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data/8e82ee5c4/61a6fa66e5ea44c3b83bc6d6ff75c669/FLAGb306fe464 [2021-10-11 02:28:14,807 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:14,807 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-11 02:28:14,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data/8e82ee5c4/61a6fa66e5ea44c3b83bc6d6ff75c669/FLAGb306fe464 [2021-10-11 02:28:15,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data/8e82ee5c4/61a6fa66e5ea44c3b83bc6d6ff75c669 [2021-10-11 02:28:15,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:15,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:15,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:15,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:15,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:15,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:15" (1/1) ... [2021-10-11 02:28:15,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4c354d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:15, skipping insertion in model container [2021-10-11 02:28:15,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:15" (1/1) ... [2021-10-11 02:28:15,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:15,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:15,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:15,589 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-11 02:28:15,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3eee0aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:15, skipping insertion in model container [2021-10-11 02:28:15,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:15,590 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:28:15,593 INFO L168 Benchmark]: Toolchain (without parser) took 520.69 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.4 MB in the beginning and 96.6 MB in the end (delta: -22.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:15,595 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 102.8 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:15,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.17 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.1 MB in the beginning and 96.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:15,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 102.8 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 514.17 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.1 MB in the beginning and 96.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:17,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:17,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:17,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:17,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:17,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:17,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:17,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:17,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:17,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:17,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:17,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:17,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:17,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:17,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:17,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:17,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:17,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:17,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:17,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:17,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:17,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:17,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:17,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:17,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:17,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:17,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:17,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:17,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:17,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:17,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:17,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:17,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:17,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:17,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:17,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:17,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:17,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:17,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:17,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:17,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:17,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:28:17,933 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:17,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:17,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:17,937 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:17,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:17,938 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:17,938 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:17,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:17,938 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:17,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:28:17,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:28:17,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:17,941 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:17,942 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:28:17,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:17,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:17,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:17,943 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:28:17,943 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:28:17,943 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:28:17,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:17,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:17,944 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:28:17,944 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:28:17,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:17,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:17,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:17,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:28:17,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:17,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:17,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:17,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:17,946 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:28:17,946 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:17,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:17,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:17,947 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_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2021-10-11 02:28:18,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:18,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:18,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:18,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:18,342 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:18,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-11 02:28:18,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data/e52bf971b/d32a52448ba24e048da9308997603840/FLAGf1dfba566 [2021-10-11 02:28:18,988 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:18,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-11 02:28:19,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data/e52bf971b/d32a52448ba24e048da9308997603840/FLAGf1dfba566 [2021-10-11 02:28:19,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/data/e52bf971b/d32a52448ba24e048da9308997603840 [2021-10-11 02:28:19,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:19,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:19,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:19,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:19,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:19,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:19" (1/1) ... [2021-10-11 02:28:19,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5710cbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:19, skipping insertion in model container [2021-10-11 02:28:19,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:19" (1/1) ... [2021-10-11 02:28:19,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:19,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:19,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:19,844 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:28:19,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:19,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:19,933 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:20,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:20,141 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:20,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20 WrapperNode [2021-10-11 02:28:20,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:20,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:20,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:20,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:20,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:20,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:20,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:20,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:20,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:20,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:20,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:20,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:20,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:28:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:20,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:20,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:20,875 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:28:20,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:20 BoogieIcfgContainer [2021-10-11 02:28:20,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:20,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:20,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:20,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:20,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:19" (1/3) ... [2021-10-11 02:28:20,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1152a25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:20, skipping insertion in model container [2021-10-11 02:28:20,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (2/3) ... [2021-10-11 02:28:20,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1152a25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:20, skipping insertion in model container [2021-10-11 02:28:20,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:20" (3/3) ... [2021-10-11 02:28:20,886 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2021-10-11 02:28:20,900 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:20,904 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-10-11 02:28:20,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-11 02:28:20,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:20,936 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:28:20,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:20,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:20,937 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:20,937 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:20,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:20,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-10-11 02:28:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:20,956 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:20,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:20,958 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:20,964 INFO L82 PathProgramCache]: Analyzing trace with hash 119409031, now seen corresponding path program 1 times [2021-10-11 02:28:20,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:20,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159771288] [2021-10-11 02:28:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:21,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:21,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:21,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:21,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159771288] [2021-10-11 02:28:21,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:21,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:21,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012054790] [2021-10-11 02:28:21,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:21,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:21,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:21,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:21,236 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2021-10-11 02:28:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:21,333 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-10-11 02:28:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:21,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:28:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:21,346 INFO L225 Difference]: With dead ends: 71 [2021-10-11 02:28:21,346 INFO L226 Difference]: Without dead ends: 67 [2021-10-11 02:28:21,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-11 02:28:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2021-10-11 02:28:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 02:28:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-11 02:28:21,389 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-10-11 02:28:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:21,390 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-11 02:28:21,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-10-11 02:28:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:21,392 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:21,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:21,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:28:21,608 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:21,609 INFO L82 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2021-10-11 02:28:21,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:21,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875761291] [2021-10-11 02:28:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:21,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:21,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:21,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:21,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875761291] [2021-10-11 02:28:21,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:21,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:21,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996259321] [2021-10-11 02:28:21,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:21,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:21,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:21,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:21,747 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2021-10-11 02:28:21,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:21,793 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-10-11 02:28:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:21,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:28:21,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:21,795 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:28:21,796 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:28:21,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:28:21,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-11 02:28:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:28:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-11 02:28:21,813 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-10-11 02:28:21,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:21,814 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-11 02:28:21,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-11 02:28:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:21,816 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:21,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:22,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:28:22,028 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash 176667333, now seen corresponding path program 1 times [2021-10-11 02:28:22,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:22,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908963767] [2021-10-11 02:28:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:22,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:22,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:22,176 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:28:22,176 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:28:22,183 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:22,211 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2021-10-11 02:28:22,217 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:28:22,221 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:22,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2021-10-11 02:28:22,230 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:28:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:22,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:22,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908963767] [2021-10-11 02:28:22,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:22,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:28:22,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151990516] [2021-10-11 02:28:22,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:22,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:22,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:22,269 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 3 states. [2021-10-11 02:28:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:22,335 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-10-11 02:28:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:22,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:28:22,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:22,337 INFO L225 Difference]: With dead ends: 49 [2021-10-11 02:28:22,337 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:28:22,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:22,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:28:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2021-10-11 02:28:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:28:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-10-11 02:28:22,343 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 8 [2021-10-11 02:28:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:22,343 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-10-11 02:28:22,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-10-11 02:28:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:22,344 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:22,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:22,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:28:22,564 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:22,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:22,565 INFO L82 PathProgramCache]: Analyzing trace with hash 176667334, now seen corresponding path program 1 times [2021-10-11 02:28:22,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:22,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090163392] [2021-10-11 02:28:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:22,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:22,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:22,720 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:22,721 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-10-11 02:28:22,732 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:22,767 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-10-11 02:28:22,774 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:22,775 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:11 [2021-10-11 02:28:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:22,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:22,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090163392] [2021-10-11 02:28:22,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:22,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:28:22,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760548103] [2021-10-11 02:28:22,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:22,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:22,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:22,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:22,823 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 3 states. [2021-10-11 02:28:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:22,904 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2021-10-11 02:28:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:22,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:28:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:22,906 INFO L225 Difference]: With dead ends: 70 [2021-10-11 02:28:22,906 INFO L226 Difference]: Without dead ends: 70 [2021-10-11 02:28:22,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-11 02:28:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2021-10-11 02:28:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:28:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2021-10-11 02:28:22,913 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 8 [2021-10-11 02:28:22,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:22,913 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2021-10-11 02:28:22,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:22,913 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2021-10-11 02:28:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:22,914 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:22,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:23,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:28:23,125 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2021-10-11 02:28:23,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:23,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148116931] [2021-10-11 02:28:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:23,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:23,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:23,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:23,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148116931] [2021-10-11 02:28:23,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:23,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:28:23,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839110972] [2021-10-11 02:28:23,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:23,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:23,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:23,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:23,237 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand 5 states. [2021-10-11 02:28:23,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:23,298 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2021-10-11 02:28:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:23,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:28:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:23,301 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:28:23,302 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:28:23,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:28:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2021-10-11 02:28:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 02:28:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2021-10-11 02:28:23,324 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 8 [2021-10-11 02:28:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:23,324 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2021-10-11 02:28:23,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:23,325 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2021-10-11 02:28:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:23,326 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:23,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:23,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:28:23,537 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:23,538 INFO L82 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2021-10-11 02:28:23,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:23,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247146222] [2021-10-11 02:28:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:23,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:28:23,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:23,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:23,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247146222] [2021-10-11 02:28:23,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:23,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:23,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620309533] [2021-10-11 02:28:23,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:23,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:23,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:23,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:23,690 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 5 states. [2021-10-11 02:28:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:23,794 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2021-10-11 02:28:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:23,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:28:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:23,798 INFO L225 Difference]: With dead ends: 71 [2021-10-11 02:28:23,798 INFO L226 Difference]: Without dead ends: 71 [2021-10-11 02:28:23,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-11 02:28:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2021-10-11 02:28:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 02:28:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2021-10-11 02:28:23,804 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 9 [2021-10-11 02:28:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:23,805 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2021-10-11 02:28:23,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2021-10-11 02:28:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:23,806 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:23,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:24,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:28:24,018 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:24,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:24,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1181720059, now seen corresponding path program 1 times [2021-10-11 02:28:24,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:24,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357781013] [2021-10-11 02:28:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:24,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:24,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:24,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:24,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357781013] [2021-10-11 02:28:24,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:24,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:24,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904365121] [2021-10-11 02:28:24,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:24,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:24,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:24,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:24,095 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand 3 states. [2021-10-11 02:28:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:24,156 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2021-10-11 02:28:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:24,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:28:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:24,157 INFO L225 Difference]: With dead ends: 73 [2021-10-11 02:28:24,157 INFO L226 Difference]: Without dead ends: 69 [2021-10-11 02:28:24,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:24,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-11 02:28:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2021-10-11 02:28:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-10-11 02:28:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2021-10-11 02:28:24,162 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 9 [2021-10-11 02:28:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:24,163 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2021-10-11 02:28:24,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2021-10-11 02:28:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:24,163 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:24,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:24,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:28:24,378 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1182786029, now seen corresponding path program 1 times [2021-10-11 02:28:24,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:24,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901608255] [2021-10-11 02:28:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:24,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:28:24,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:24,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:24,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901608255] [2021-10-11 02:28:24,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:24,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:24,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879692229] [2021-10-11 02:28:24,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:24,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:24,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:24,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:24,484 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 4 states. [2021-10-11 02:28:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:24,520 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-10-11 02:28:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:24,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:28:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:24,522 INFO L225 Difference]: With dead ends: 38 [2021-10-11 02:28:24,522 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:28:24,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:28:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-11 02:28:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:28:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-11 02:28:24,525 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 9 [2021-10-11 02:28:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:24,525 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-11 02:28:24,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-11 02:28:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:28:24,526 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:24,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:24,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:28:24,743 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:24,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2021-10-11 02:28:24,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:24,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449303521] [2021-10-11 02:28:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:24,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:24,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:24,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:28:24,878 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:24,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:24,881 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:24,881 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:28:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:24,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:24,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449303521] [2021-10-11 02:28:24,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:24,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:24,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122869897] [2021-10-11 02:28:24,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:24,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:24,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:24,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:24,902 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2021-10-11 02:28:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:24,985 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-10-11 02:28:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:24,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:28:24,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:24,987 INFO L225 Difference]: With dead ends: 47 [2021-10-11 02:28:24,987 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:28:24,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:28:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-10-11 02:28:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:28:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-11 02:28:24,990 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2021-10-11 02:28:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:24,990 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-11 02:28:24,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-11 02:28:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:28:24,991 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:24,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:25,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:28:25,209 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2021-10-11 02:28:25,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:25,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520447766] [2021-10-11 02:28:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:25,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:28:25,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:25,329 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:28:25,329 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:28:25,332 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:25,375 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2021-10-11 02:28:25,378 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:28:25,379 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:25,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2021-10-11 02:28:25,383 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:28:25,482 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:25,482 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2021-10-11 02:28:25,489 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:25,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:25,509 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:25,509 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:17 [2021-10-11 02:28:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:25,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:25,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520447766] [2021-10-11 02:28:25,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:25,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:25,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899100361] [2021-10-11 02:28:25,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:25,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:25,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:25,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:25,644 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2021-10-11 02:28:25,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:25,758 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-10-11 02:28:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:25,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:28:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:25,758 INFO L225 Difference]: With dead ends: 46 [2021-10-11 02:28:25,758 INFO L226 Difference]: Without dead ends: 46 [2021-10-11 02:28:25,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-11 02:28:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2021-10-11 02:28:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:28:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-10-11 02:28:25,761 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 10 [2021-10-11 02:28:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:25,761 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-10-11 02:28:25,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-10-11 02:28:25,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:28:25,761 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:25,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:25,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:28:25,973 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2021-10-11 02:28:25,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:25,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139978433] [2021-10-11 02:28:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:26,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:28:26,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:26,071 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:26,071 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-10-11 02:28:26,074 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,113 INFO L625 ElimStorePlain]: treesize reduction 10, result has 75.0 percent of original size [2021-10-11 02:28:26,188 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:28:26,189 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:28:26,196 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,268 INFO L625 ElimStorePlain]: treesize reduction 12, result has 77.8 percent of original size [2021-10-11 02:28:26,271 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:28:26,273 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:28:26,274 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:26,274 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:44 [2021-10-11 02:28:26,279 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:28:26,280 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:28:26,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:28:26,327 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:28:26,485 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2021-10-11 02:28:26,497 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:28:26,500 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:28:26,503 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:28:26,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:28:26,573 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:26,573 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 46 [2021-10-11 02:28:26,577 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:28:26,596 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-10-11 02:28:26,598 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:28:26,612 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-10-11 02:28:26,614 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,762 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2021-10-11 02:28:26,763 INFO L625 ElimStorePlain]: treesize reduction 18, result has 83.0 percent of original size [2021-10-11 02:28:26,778 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:26,779 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-10-11 02:28:26,781 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,814 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:26,814 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2021-10-11 02:28:26,817 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-11 02:28:26,825 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-11 02:28:26,826 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,880 INFO L625 ElimStorePlain]: treesize reduction 26, result has 40.9 percent of original size [2021-10-11 02:28:26,886 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:26,886 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:95, output treesize:9 [2021-10-11 02:28:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:26,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:26,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139978433] [2021-10-11 02:28:26,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:26,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:26,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975880498] [2021-10-11 02:28:26,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:26,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:26,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:26,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:26,932 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2021-10-11 02:28:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:27,142 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-10-11 02:28:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:27,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:28:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:27,143 INFO L225 Difference]: With dead ends: 44 [2021-10-11 02:28:27,143 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 02:28:27,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 02:28:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2021-10-11 02:28:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:28:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-10-11 02:28:27,146 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 10 [2021-10-11 02:28:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:27,146 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-10-11 02:28:27,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-10-11 02:28:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:28:27,147 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:27,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:27,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:28:27,362 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash 905839516, now seen corresponding path program 1 times [2021-10-11 02:28:27,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:27,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561399040] [2021-10-11 02:28:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:27,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:27,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:27,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561399040] [2021-10-11 02:28:27,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:27,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:27,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366360626] [2021-10-11 02:28:27,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:27,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:27,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:27,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:27,451 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2021-10-11 02:28:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:27,476 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-10-11 02:28:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:27,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:28:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:27,478 INFO L225 Difference]: With dead ends: 38 [2021-10-11 02:28:27,478 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 02:28:27,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 02:28:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-10-11 02:28:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:28:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-10-11 02:28:27,483 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 12 [2021-10-11 02:28:27,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:27,484 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-10-11 02:28:27,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-10-11 02:28:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:28:27,485 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:27,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:27,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:28:27,698 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:27,699 INFO L82 PathProgramCache]: Analyzing trace with hash 889860305, now seen corresponding path program 1 times [2021-10-11 02:28:27,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:27,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990922774] [2021-10-11 02:28:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:27,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:27,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:27,828 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:28:27,828 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:28:27,831 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:27,865 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2021-10-11 02:28:27,867 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:28:27,868 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:27,868 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2021-10-11 02:28:27,872 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:28:27,921 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:27,922 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2021-10-11 02:28:27,925 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:27,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:27,935 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:27,935 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:19 [2021-10-11 02:28:28,001 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-10-11 02:28:28,003 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:28,016 INFO L625 ElimStorePlain]: treesize reduction 4, result has 76.5 percent of original size [2021-10-11 02:28:28,018 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:28,018 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2021-10-11 02:28:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:28,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:28,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990922774] [2021-10-11 02:28:28,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:28,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:28,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010782528] [2021-10-11 02:28:28,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:28,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:28,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:28,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:28,047 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 6 states. [2021-10-11 02:28:36,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:36,246 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-10-11 02:28:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:36,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 02:28:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:36,247 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:28:36,247 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 02:28:36,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:28:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 02:28:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2021-10-11 02:28:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:28:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-11 02:28:36,249 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 13 [2021-10-11 02:28:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:36,249 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-11 02:28:36,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-11 02:28:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:28:36,250 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:36,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:36,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 02:28:36,455 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:36,456 INFO L82 PathProgramCache]: Analyzing trace with hash 889860306, now seen corresponding path program 1 times [2021-10-11 02:28:36,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:36,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738566216] [2021-10-11 02:28:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:36,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:28:36,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:36,601 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:28:36,602 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:28:36,604 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:36,671 INFO L625 ElimStorePlain]: treesize reduction 12, result has 75.5 percent of original size [2021-10-11 02:28:36,695 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:36,696 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-10-11 02:28:36,698 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:36,763 INFO L625 ElimStorePlain]: treesize reduction 10, result has 80.8 percent of original size [2021-10-11 02:28:36,765 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:28:36,766 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:28:36,767 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:28:36,767 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:44 [2021-10-11 02:28:36,769 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:28:36,770 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:28:36,796 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:28:36,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:28:36,824 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:28:36,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:28:36,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:28:36,830 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-10-11 02:28:36,832 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2021-10-11 02:28:36,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:28:36,847 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:28:36,850 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-10-11 02:28:36,868 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:28:36,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-10-11 02:28:36,881 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:28:36,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:28:36,885 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-10-11 02:28:36,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:28:36,948 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:36,948 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-10-11 02:28:36,951 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:36,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:28:37,042 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:37,042 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 55 [2021-10-11 02:28:37,045 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:37,092 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:37,092 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-10-11 02:28:37,095 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:37,115 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:37,115 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-10-11 02:28:37,117 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:37,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-11 02:28:37,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-11 02:28:37,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-11 02:28:37,128 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-10-11 02:28:37,129 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:37,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:28:37,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-11 02:28:37,140 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-10-11 02:28:37,141 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:37,209 INFO L625 ElimStorePlain]: treesize reduction 99, result has 17.5 percent of original size [2021-10-11 02:28:37,214 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-10-11 02:28:37,216 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:37,231 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:37,233 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:37,233 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 5 variables, input treesize:243, output treesize:9 [2021-10-11 02:28:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:37,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:37,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738566216] [2021-10-11 02:28:37,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:37,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:37,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995284411] [2021-10-11 02:28:37,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:37,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:37,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:37,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:37,264 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2021-10-11 02:28:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:37,360 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-10-11 02:28:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:37,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:28:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:37,361 INFO L225 Difference]: With dead ends: 46 [2021-10-11 02:28:37,361 INFO L226 Difference]: Without dead ends: 46 [2021-10-11 02:28:37,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-11 02:28:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2021-10-11 02:28:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 02:28:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-10-11 02:28:37,363 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2021-10-11 02:28:37,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:37,363 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-10-11 02:28:37,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:37,364 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-10-11 02:28:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:28:37,364 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:37,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:37,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2021-10-11 02:28:37,577 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:37,577 INFO L82 PathProgramCache]: Analyzing trace with hash 889859920, now seen corresponding path program 1 times [2021-10-11 02:28:37,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:37,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147654040] [2021-10-11 02:28:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:37,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:37,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:37,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:37,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147654040] [2021-10-11 02:28:37,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:37,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:28:37,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608618369] [2021-10-11 02:28:37,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:37,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:37,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:37,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:37,681 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 5 states. [2021-10-11 02:28:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:37,750 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-10-11 02:28:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:37,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:28:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:37,752 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:28:37,752 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:28:37,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:28:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2021-10-11 02:28:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 02:28:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-10-11 02:28:37,757 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2021-10-11 02:28:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:37,757 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-10-11 02:28:37,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-10-11 02:28:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:28:37,758 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:37,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:37,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2021-10-11 02:28:37,972 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2021-10-11 02:28:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:37,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1983734109, now seen corresponding path program 1 times [2021-10-11 02:28:37,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:37,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467805384] [2021-10-11 02:28:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ebfece-73a4-4113-aa42-c097ffb5167e/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:38,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:38,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:38,130 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:28:38,130 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:28:38,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2021-10-11 02:28:38,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:38 BoogieIcfgContainer [2021-10-11 02:28:38,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:38,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:38,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:38,376 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:38,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:20" (3/4) ... [2021-10-11 02:28:38,380 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:28:38,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:38,381 INFO L168 Benchmark]: Toolchain (without parser) took 19148.79 ms. Allocated memory was 62.9 MB in the beginning and 130.0 MB in the end (delta: 67.1 MB). Free memory was 41.4 MB in the beginning and 88.2 MB in the end (delta: -46.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,382 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:38,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 906.01 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 32.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.51 ms. Allocated memory is still 62.9 MB. Free memory was 32.0 MB in the beginning and 29.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,383 INFO L168 Benchmark]: Boogie Preprocessor took 54.12 ms. Allocated memory is still 62.9 MB. Free memory was 29.7 MB in the beginning and 28.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,388 INFO L168 Benchmark]: RCFGBuilder took 626.02 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 28.2 MB in the beginning and 52.1 MB in the end (delta: -23.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,388 INFO L168 Benchmark]: TraceAbstraction took 17496.38 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 51.6 MB in the beginning and 89.3 MB in the end (delta: -37.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,389 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 130.0 MB. Free memory was 89.3 MB in the beginning and 88.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:38,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 906.01 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 32.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.51 ms. Allocated memory is still 62.9 MB. Free memory was 32.0 MB in the beginning and 29.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.12 ms. Allocated memory is still 62.9 MB. Free memory was 29.7 MB in the beginning and 28.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 626.02 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 28.2 MB in the beginning and 52.1 MB in the end (delta: -23.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17496.38 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 51.6 MB in the beginning and 89.3 MB in the end (delta: -37.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 130.0 MB. Free memory was 89.3 MB in the beginning and 88.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; VAL [a6={7:0}, ldv_global_msg_list={3:0}] [L764] int ret = - -3; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [a6={7:0}, ldv_global_msg_list={3:0}] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L758] return __VERIFIER_nondet_int(); [L768] ret = f6() [L769] COND FALSE !(ret<0) [L761] return __VERIFIER_nondet_int(); [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [a6={7:0}, ldv_global_msg_list={3:0}] [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={7:0}, ldv_global_msg_list={3:0}] [L789] a6.p = 0 VAL [a6={7:0}, ldv_global_msg_list={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.3s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 480 SDtfs, 654 SDslu, 538 SDs, 0 SdLazy, 367 SolverSat, 21 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 149 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 133 ConstructedInterpolants, 13 QuantifiedInterpolants, 10275 SizeOfPredicates, 38 NumberOfNonLiveVariables, 709 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...