./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0134.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P --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 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:13:36,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:13:36,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:13:36,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:13:36,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:13:36,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:13:36,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:13:36,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:13:36,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:13:36,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:13:36,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:13:36,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:13:36,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:13:36,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:13:36,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:13:36,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:13:36,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:13:36,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:13:36,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:13:36,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:13:36,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:13:36,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:13:36,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:13:36,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:13:36,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:13:36,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:13:36,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:13:36,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:13:36,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:13:36,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:13:36,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:13:36,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:13:36,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:13:36,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:13:36,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:13:36,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:13:36,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:13:36,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:13:36,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:13:36,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:13:36,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:13:36,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:13:37,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:13:37,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:13:37,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:13:37,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:13:37,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:13:37,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:13:37,017 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:13:37,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:13:37,018 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:13:37,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:13:37,019 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:13:37,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:13:37,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:13:37,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:13:37,021 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:13:37,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:13:37,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:13:37,022 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:13:37,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:13:37,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:13:37,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:13:37,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:13:37,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:13:37,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:13:37,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:13:37,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:13:37,025 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:13:37,025 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:13:37,025 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:13:37,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:13:37,026 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:13:37,026 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:13:37,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:13:37,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:13:37,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:13:37,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:13:37,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:13:37,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:13:37,029 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:13:37,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:13:37,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:13:37,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:13:37,032 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_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-11-21 01:13:37,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:13:37,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:13:37,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:13:37,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:13:37,387 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:13:37,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/memsafety/test-0134.i [2021-11-21 01:13:37,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data/647cffb3d/f8a9400bf9bd424abe76aa89153ed05c/FLAG6cfc3667d [2021-11-21 01:13:38,121 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:13:38,122 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/sv-benchmarks/c/memsafety/test-0134.i [2021-11-21 01:13:38,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data/647cffb3d/f8a9400bf9bd424abe76aa89153ed05c/FLAG6cfc3667d [2021-11-21 01:13:38,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data/647cffb3d/f8a9400bf9bd424abe76aa89153ed05c [2021-11-21 01:13:38,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:13:38,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:13:38,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:13:38,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:13:38,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:13:38,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:13:38" (1/1) ... [2021-11-21 01:13:38,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5540091f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:38, skipping insertion in model container [2021-11-21 01:13:38,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:13:38" (1/1) ... [2021-11-21 01:13:38,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:13:38,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:13:38,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:13:38,893 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-21 01:13:38,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78992d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:38, skipping insertion in model container [2021-11-21 01:13:38,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:13:38,895 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:13:38,897 INFO L158 Benchmark]: Toolchain (without parser) took 471.78ms. Allocated memory is still 151.0MB. Free memory was 115.6MB in the beginning and 122.5MB in the end (delta: -6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 01:13:38,898 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 64.8MB in the beginning and 64.8MB in the end (delta: 31.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:13:38,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.12ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 122.5MB in the end (delta: -7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 01:13:38,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 64.8MB in the beginning and 64.8MB in the end (delta: 31.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.12ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 122.5MB in the end (delta: -7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 585]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P --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 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:13:41,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:13:41,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:13:41,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:13:41,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:13:41,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:13:41,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:13:41,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:13:41,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:13:41,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:13:41,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:13:41,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:13:41,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:13:41,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:13:41,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:13:41,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:13:41,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:13:41,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:13:41,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:13:41,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:13:41,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:13:41,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:13:41,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:13:41,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:13:41,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:13:41,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:13:41,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:13:41,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:13:41,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:13:41,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:13:41,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:13:41,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:13:41,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:13:41,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:13:41,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:13:41,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:13:41,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:13:41,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:13:41,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:13:41,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:13:41,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:13:41,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:13:41,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:13:41,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:13:41,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:13:41,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:13:41,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:13:41,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:13:41,958 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:13:41,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:13:41,958 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:13:41,958 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:13:41,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:13:41,959 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:13:41,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:13:41,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:13:41,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:13:41,963 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:13:41,963 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:13:41,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:13:41,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:13:41,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:13:41,964 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:13:41,964 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:13:41,964 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:13:41,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:13:41,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:13:41,965 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:13:41,966 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:13:41,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:13:41,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:13:41,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:13:41,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:13:41,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:13:41,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:13:41,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:13:41,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:13:41,969 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:13:41,970 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:13:41,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:13:41,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:13:41,971 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_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-11-21 01:13:42,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:13:42,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:13:42,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:13:42,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:13:42,510 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:13:42,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/memsafety/test-0134.i [2021-11-21 01:13:42,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data/7b7d078b3/8e48faf15f484bbb93e89214677f0dc1/FLAG3b420fd22 [2021-11-21 01:13:43,447 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:13:43,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/sv-benchmarks/c/memsafety/test-0134.i [2021-11-21 01:13:43,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data/7b7d078b3/8e48faf15f484bbb93e89214677f0dc1/FLAG3b420fd22 [2021-11-21 01:13:43,657 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/data/7b7d078b3/8e48faf15f484bbb93e89214677f0dc1 [2021-11-21 01:13:43,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:13:43,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:13:43,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:13:43,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:13:43,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:13:43,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:13:43" (1/1) ... [2021-11-21 01:13:43,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da43c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:43, skipping insertion in model container [2021-11-21 01:13:43,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:13:43" (1/1) ... [2021-11-21 01:13:43,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:13:43,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:13:44,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:13:44,306 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:13:44,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:13:44,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:13:44,420 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:13:44,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:13:44,576 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:13:44,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44 WrapperNode [2021-11-21 01:13:44,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:13:44,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:13:44,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:13:44,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:13:44,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,687 INFO L137 Inliner]: procedures = 140, calls = 54, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 133 [2021-11-21 01:13:44,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:13:44,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:13:44,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:13:44,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:13:44,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:13:44,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:13:44,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:13:44,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:13:44,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (1/1) ... [2021-11-21 01:13:44,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:13:44,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:13:44,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:13:44,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:13:44,911 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:13:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:13:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:13:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-11-21 01:13:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-11-21 01:13:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:13:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:13:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:13:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:13:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:13:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-21 01:13:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-21 01:13:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:13:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:13:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:13:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:13:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-11-21 01:13:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-11-21 01:13:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:13:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:13:45,124 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:13:45,126 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:13:45,945 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:13:45,971 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:13:45,971 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 01:13:45,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:13:45 BoogieIcfgContainer [2021-11-21 01:13:45,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:13:45,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:13:45,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:13:45,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:13:45,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:13:43" (1/3) ... [2021-11-21 01:13:45,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6332bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:13:45, skipping insertion in model container [2021-11-21 01:13:45,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:44" (2/3) ... [2021-11-21 01:13:45,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6332bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:13:45, skipping insertion in model container [2021-11-21 01:13:45,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:13:45" (3/3) ... [2021-11-21 01:13:45,983 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0134.i [2021-11-21 01:13:46,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:13:46,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2021-11-21 01:13:46,067 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:13:46,076 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:13:46,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2021-11-21 01:13:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 69 states have (on average 1.8695652173913044) internal successors, (129), 117 states have internal predecessors, (129), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-21 01:13:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:13:46,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:46,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:13:46,110 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:13:46,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:46,117 INFO L85 PathProgramCache]: Analyzing trace with hash 66866992, now seen corresponding path program 1 times [2021-11-21 01:13:46,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:46,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532459628] [2021-11-21 01:13:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:46,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:46,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:46,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:46,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:13:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:46,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:13:46,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:46,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:46,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:46,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532459628] [2021-11-21 01:13:46,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532459628] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:46,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:46,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:13:46,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102627198] [2021-11-21 01:13:46,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:46,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:13:46,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:13:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:13:46,446 INFO L87 Difference]: Start difference. First operand has 131 states, 69 states have (on average 1.8695652173913044) internal successors, (129), 117 states have internal predecessors, (129), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:46,505 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2021-11-21 01:13:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:13:46,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 01:13:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:46,528 INFO L225 Difference]: With dead ends: 131 [2021-11-21 01:13:46,528 INFO L226 Difference]: Without dead ends: 129 [2021-11-21 01:13:46,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:13:46,533 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:46,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:13:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-21 01:13:46,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-21 01:13:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 68 states have (on average 1.7941176470588236) internal successors, (122), 115 states have internal predecessors, (122), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-21 01:13:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-11-21 01:13:46,596 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 5 [2021-11-21 01:13:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:46,597 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-11-21 01:13:46,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-11-21 01:13:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:13:46,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:46,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:13:46,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:13:46,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:46,813 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:13:46,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash 66867054, now seen corresponding path program 1 times [2021-11-21 01:13:46,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:46,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566023585] [2021-11-21 01:13:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:46,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:46,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:46,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:13:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:46,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:13:46,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:46,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:13:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:47,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:47,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:47,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566023585] [2021-11-21 01:13:47,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566023585] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:47,061 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:47,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:13:47,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888945204] [2021-11-21 01:13:47,074 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:47,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:13:47,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:47,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:13:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:13:47,079 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:47,410 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2021-11-21 01:13:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:13:47,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 01:13:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:47,413 INFO L225 Difference]: With dead ends: 151 [2021-11-21 01:13:47,413 INFO L226 Difference]: Without dead ends: 151 [2021-11-21 01:13:47,414 INFO L932 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 [2021-11-21 01:13:47,415 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 75 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:47,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 141 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:13:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-21 01:13:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 128. [2021-11-21 01:13:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 68 states have (on average 1.7794117647058822) internal successors, (121), 114 states have internal predecessors, (121), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-21 01:13:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-11-21 01:13:47,440 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 5 [2021-11-21 01:13:47,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:47,441 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-11-21 01:13:47,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-11-21 01:13:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:13:47,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:47,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:13:47,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:47,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:47,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:13:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:47,666 INFO L85 PathProgramCache]: Analyzing trace with hash 66867055, now seen corresponding path program 1 times [2021-11-21 01:13:47,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:47,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494128670] [2021-11-21 01:13:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:47,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:47,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:47,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:47,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:13:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:47,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:13:47,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:47,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:13:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:47,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:47,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:47,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494128670] [2021-11-21 01:13:47,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494128670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:47,952 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:47,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:13:47,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342261189] [2021-11-21 01:13:47,953 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:47,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:13:47,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:13:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:13:47,957 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:48,621 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2021-11-21 01:13:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:13:48,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 01:13:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:48,625 INFO L225 Difference]: With dead ends: 150 [2021-11-21 01:13:48,625 INFO L226 Difference]: Without dead ends: 150 [2021-11-21 01:13:48,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:13:48,627 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 126 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:48,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 179 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:13:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-21 01:13:48,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 127. [2021-11-21 01:13:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 68 states have (on average 1.7647058823529411) internal successors, (120), 113 states have internal predecessors, (120), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-21 01:13:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-11-21 01:13:48,661 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 5 [2021-11-21 01:13:48,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:48,662 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-11-21 01:13:48,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-11-21 01:13:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:13:48,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:48,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:48,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-21 01:13:48,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:48,878 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:13:48,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:48,880 INFO L85 PathProgramCache]: Analyzing trace with hash -828261384, now seen corresponding path program 1 times [2021-11-21 01:13:48,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:48,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689577649] [2021-11-21 01:13:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:48,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:48,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:48,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:48,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:13:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:49,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:13:49,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:49,114 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:13:49,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:13:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:49,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:49,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:49,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689577649] [2021-11-21 01:13:49,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689577649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:49,420 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:49,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-21 01:13:49,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543396171] [2021-11-21 01:13:49,438 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:49,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:13:49,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:13:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:13:49,442 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:50,243 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2021-11-21 01:13:50,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:13:50,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:13:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:50,247 INFO L225 Difference]: With dead ends: 164 [2021-11-21 01:13:50,247 INFO L226 Difference]: Without dead ends: 164 [2021-11-21 01:13:50,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:13:50,249 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 353 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:50,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 259 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:13:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-21 01:13:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2021-11-21 01:13:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 79 states have (on average 1.759493670886076) internal successors, (139), 122 states have internal predecessors, (139), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-21 01:13:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 157 transitions. [2021-11-21 01:13:50,268 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 157 transitions. Word has length 8 [2021-11-21 01:13:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:50,268 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 157 transitions. [2021-11-21 01:13:50,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 157 transitions. [2021-11-21 01:13:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:13:50,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:50,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:50,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:50,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:50,484 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:13:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -828261383, now seen corresponding path program 1 times [2021-11-21 01:13:50,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:50,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810811977] [2021-11-21 01:13:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:50,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:50,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:50,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:50,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:13:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:50,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:13:50,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:50,692 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:13:50,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:13:50,704 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:13:50,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:13:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:50,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:53,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:53,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810811977] [2021-11-21 01:13:53,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810811977] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:53,578 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:53,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-21 01:13:53,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933006968] [2021-11-21 01:13:53,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:53,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:13:53,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:53,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:13:53,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-21 01:13:53,580 INFO L87 Difference]: Start difference. First operand 137 states and 157 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:54,887 INFO L93 Difference]: Finished difference Result 195 states and 221 transitions. [2021-11-21 01:13:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:13:54,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:13:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:54,892 INFO L225 Difference]: With dead ends: 195 [2021-11-21 01:13:54,892 INFO L226 Difference]: Without dead ends: 195 [2021-11-21 01:13:54,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-21 01:13:54,894 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 97 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:54,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 591 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 191 Unchecked, 1.3s Time] [2021-11-21 01:13:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-21 01:13:54,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 175. [2021-11-21 01:13:54,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 110 states have (on average 1.7272727272727273) internal successors, (190), 152 states have internal predecessors, (190), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:13:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 220 transitions. [2021-11-21 01:13:54,910 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 220 transitions. Word has length 8 [2021-11-21 01:13:54,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:54,911 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 220 transitions. [2021-11-21 01:13:54,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 220 transitions. [2021-11-21 01:13:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:13:54,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:54,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:54,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:55,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:55,129 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr2REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:13:55,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1390240455, now seen corresponding path program 1 times [2021-11-21 01:13:55,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:55,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006310552] [2021-11-21 01:13:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:55,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:55,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:55,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:55,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:13:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:55,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 01:13:55,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:55,396 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-21 01:13:55,396 INFO L388 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 21 treesize of output 19 [2021-11-21 01:13:55,564 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-21 01:13:55,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 15 [2021-11-21 01:13:55,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 01:13:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:55,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:55,861 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-21 01:13:55,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-21 01:14:07,702 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_14| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_14|))) (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32))) (= |c_~#gl_list~0.base| (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_14| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_14|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_1) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) is different from false [2021-11-21 01:14:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:07,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:07,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006310552] [2021-11-21 01:14:07,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006310552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:07,756 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:07,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-21 01:14:07,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689204169] [2021-11-21 01:14:07,757 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:07,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:14:07,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:07,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:14:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=171, Unknown=3, NotChecked=26, Total=240 [2021-11-21 01:14:07,759 INFO L87 Difference]: Start difference. First operand 175 states and 220 transitions. Second operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:09,775 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#gl_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| (_ bv3 32)))) (_ bv1 1))) (= (_ bv3 32) |c_~#gl_list~0.base|) (= (_ bv0 1) (select |c_#valid| (_ bv0 32))) (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_14| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_14|))) (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32))) (= |c_~#gl_list~0.base| (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_14| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_14|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_1) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) is different from false [2021-11-21 01:14:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:11,013 INFO L93 Difference]: Finished difference Result 190 states and 234 transitions. [2021-11-21 01:14:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:14:11,014 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:14:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:11,016 INFO L225 Difference]: With dead ends: 190 [2021-11-21 01:14:11,016 INFO L226 Difference]: Without dead ends: 190 [2021-11-21 01:14:11,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=91, Invalid=293, Unknown=4, NotChecked=74, Total=462 [2021-11-21 01:14:11,018 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 73 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:11,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 951 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 297 Invalid, 0 Unknown, 119 Unchecked, 1.0s Time] [2021-11-21 01:14:11,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-21 01:14:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 183. [2021-11-21 01:14:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 117 states have (on average 1.7435897435897436) internal successors, (204), 160 states have internal predecessors, (204), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:14:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2021-11-21 01:14:11,032 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 10 [2021-11-21 01:14:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:11,033 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2021-11-21 01:14:11,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:11,034 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2021-11-21 01:14:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:14:11,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:11,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:11,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:11,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:11,250 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr3REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:14:11,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1390240454, now seen corresponding path program 1 times [2021-11-21 01:14:11,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:11,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614156673] [2021-11-21 01:14:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:11,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:11,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:11,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:11,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:14:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:11,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:14:11,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:11,511 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:14:11,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-21 01:14:11,556 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:14:11,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-21 01:14:11,798 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-21 01:14:11,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 71 [2021-11-21 01:14:11,892 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-21 01:14:11,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 23 [2021-11-21 01:14:12,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 01:14:12,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 01:14:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:12,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:36,202 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|))) (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_9) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_11) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|)) (.cse3 (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))) is different from false [2021-11-21 01:14:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:36,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614156673] [2021-11-21 01:14:36,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614156673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:36,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:36,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-21 01:14:36,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578785282] [2021-11-21 01:14:36,427 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:36,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:14:36,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:14:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=170, Unknown=5, NotChecked=26, Total=240 [2021-11-21 01:14:36,429 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:40,218 INFO L93 Difference]: Finished difference Result 183 states and 233 transitions. [2021-11-21 01:14:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:14:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:14:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:40,222 INFO L225 Difference]: With dead ends: 183 [2021-11-21 01:14:40,222 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 01:14:40,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=52, Invalid=219, Unknown=5, NotChecked=30, Total=306 [2021-11-21 01:14:40,224 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 4 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:40,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 770 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 183 Unchecked, 1.0s Time] [2021-11-21 01:14:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 01:14:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-21 01:14:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 117 states have (on average 1.735042735042735) internal successors, (203), 160 states have internal predecessors, (203), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:14:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 233 transitions. [2021-11-21 01:14:40,236 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 233 transitions. Word has length 10 [2021-11-21 01:14:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:40,237 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 233 transitions. [2021-11-21 01:14:40,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 233 transitions. [2021-11-21 01:14:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:14:40,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:40,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:40,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:40,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:40,441 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:14:40,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:40,441 INFO L85 PathProgramCache]: Analyzing trace with hash -147781147, now seen corresponding path program 1 times [2021-11-21 01:14:40,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:40,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752836545] [2021-11-21 01:14:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:40,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:40,443 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:40,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:14:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:40,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:14:40,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:40,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:14:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:40,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:40,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:40,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752836545] [2021-11-21 01:14:40,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752836545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:40,694 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:40,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-21 01:14:40,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087015440] [2021-11-21 01:14:40,694 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:40,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:14:40,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:14:40,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:14:40,696 INFO L87 Difference]: Start difference. First operand 183 states and 233 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:41,426 INFO L93 Difference]: Finished difference Result 206 states and 244 transitions. [2021-11-21 01:14:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:14:41,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:14:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:41,429 INFO L225 Difference]: With dead ends: 206 [2021-11-21 01:14:41,430 INFO L226 Difference]: Without dead ends: 206 [2021-11-21 01:14:41,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:14:41,431 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 117 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:41,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 310 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:14:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-21 01:14:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 182. [2021-11-21 01:14:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 117 states have (on average 1.6923076923076923) internal successors, (198), 159 states have internal predecessors, (198), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:14:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 228 transitions. [2021-11-21 01:14:41,442 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 228 transitions. Word has length 11 [2021-11-21 01:14:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:41,443 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 228 transitions. [2021-11-21 01:14:41,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 228 transitions. [2021-11-21 01:14:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:14:41,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:41,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:41,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:41,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:41,660 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:14:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash -147781146, now seen corresponding path program 1 times [2021-11-21 01:14:41,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:41,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025608428] [2021-11-21 01:14:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:41,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:41,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:41,667 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:41,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:14:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:41,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:14:41,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:41,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:14:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:41,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:42,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:42,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025608428] [2021-11-21 01:14:42,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025608428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:42,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:42,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-21 01:14:42,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299086811] [2021-11-21 01:14:42,310 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:42,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:14:42,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:42,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:14:42,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:14:42,311 INFO L87 Difference]: Start difference. First operand 182 states and 228 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:44,268 INFO L93 Difference]: Finished difference Result 206 states and 242 transitions. [2021-11-21 01:14:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:14:44,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:14:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:44,272 INFO L225 Difference]: With dead ends: 206 [2021-11-21 01:14:44,272 INFO L226 Difference]: Without dead ends: 206 [2021-11-21 01:14:44,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:14:44,274 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 157 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:44,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 448 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-21 01:14:44,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-21 01:14:44,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 182. [2021-11-21 01:14:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 117 states have (on average 1.6581196581196582) internal successors, (194), 159 states have internal predecessors, (194), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:14:44,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 224 transitions. [2021-11-21 01:14:44,285 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 224 transitions. Word has length 11 [2021-11-21 01:14:44,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:44,285 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 224 transitions. [2021-11-21 01:14:44,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 224 transitions. [2021-11-21 01:14:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:14:44,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:44,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:44,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:44,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:44,500 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr8REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:14:44,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash -283761464, now seen corresponding path program 1 times [2021-11-21 01:14:44,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426973243] [2021-11-21 01:14:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:44,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:44,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:44,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:14:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:44,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:14:44,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:44,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:44,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:44,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426973243] [2021-11-21 01:14:44,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426973243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:44,683 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:44,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:14:44,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126978646] [2021-11-21 01:14:44,684 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:44,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:14:44,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:14:44,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:14:44,685 INFO L87 Difference]: Start difference. First operand 182 states and 224 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:45,048 INFO L93 Difference]: Finished difference Result 181 states and 221 transitions. [2021-11-21 01:14:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:14:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:14:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:45,051 INFO L225 Difference]: With dead ends: 181 [2021-11-21 01:14:45,051 INFO L226 Difference]: Without dead ends: 181 [2021-11-21 01:14:45,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:14:45,052 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 22 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:45,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 275 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:14:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-21 01:14:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-21 01:14:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.6324786324786325) internal successors, (191), 158 states have internal predecessors, (191), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:14:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 221 transitions. [2021-11-21 01:14:45,064 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 221 transitions. Word has length 13 [2021-11-21 01:14:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:45,064 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 221 transitions. [2021-11-21 01:14:45,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 221 transitions. [2021-11-21 01:14:45,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:14:45,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:45,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:45,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-21 01:14:45,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:45,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr9REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:14:45,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash -283761463, now seen corresponding path program 1 times [2021-11-21 01:14:45,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:45,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683547546] [2021-11-21 01:14:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:45,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:45,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:45,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:45,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:14:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:45,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:14:45,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:45,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:45,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 01:14:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:45,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683547546] [2021-11-21 01:14:45,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683547546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:45,947 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:45,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-21 01:14:45,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704082949] [2021-11-21 01:14:45,947 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:45,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:14:45,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:14:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:14:45,949 INFO L87 Difference]: Start difference. First operand 181 states and 221 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:47,451 INFO L93 Difference]: Finished difference Result 183 states and 218 transitions. [2021-11-21 01:14:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:14:47,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:14:47,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:47,455 INFO L225 Difference]: With dead ends: 183 [2021-11-21 01:14:47,455 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 01:14:47,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:14:47,457 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 314 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:47,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 781 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:14:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 01:14:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-11-21 01:14:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 117 states have (on average 1.606837606837607) internal successors, (188), 157 states have internal predecessors, (188), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:14:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 218 transitions. [2021-11-21 01:14:47,467 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 218 transitions. Word has length 13 [2021-11-21 01:14:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:47,468 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 218 transitions. [2021-11-21 01:14:47,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 218 transitions. [2021-11-21 01:14:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:14:47,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:47,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:47,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:47,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:47,688 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting list_emptyErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:14:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:47,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1628861501, now seen corresponding path program 1 times [2021-11-21 01:14:47,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:47,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684062391] [2021-11-21 01:14:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:47,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:47,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:47,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:47,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:14:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:47,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:14:47,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:47,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:48,159 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:14:48,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:14:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:48,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:48,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684062391] [2021-11-21 01:14:48,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684062391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:48,178 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:48,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-21 01:14:48,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357399926] [2021-11-21 01:14:48,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:48,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:14:48,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:48,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:14:48,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:14:48,180 INFO L87 Difference]: Start difference. First operand 180 states and 218 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:14:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:49,015 INFO L93 Difference]: Finished difference Result 181 states and 216 transitions. [2021-11-21 01:14:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:14:49,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-21 01:14:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:49,018 INFO L225 Difference]: With dead ends: 181 [2021-11-21 01:14:49,018 INFO L226 Difference]: Without dead ends: 181 [2021-11-21 01:14:49,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:14:49,019 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 153 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:49,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 291 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:14:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-21 01:14:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2021-11-21 01:14:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 117 states have (on average 1.5897435897435896) internal successors, (186), 156 states have internal predecessors, (186), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:14:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 216 transitions. [2021-11-21 01:14:49,033 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 216 transitions. Word has length 22 [2021-11-21 01:14:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:49,034 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 216 transitions. [2021-11-21 01:14:49,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:14:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 216 transitions. [2021-11-21 01:14:49,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:14:49,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:49,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:49,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:49,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:49,249 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting list_emptyErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:14:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1628861500, now seen corresponding path program 1 times [2021-11-21 01:14:49,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:49,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266009997] [2021-11-21 01:14:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:49,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:49,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:49,251 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:49,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:14:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:49,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:14:49,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:49,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:50,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 01:14:50,434 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:14:50,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-11-21 01:14:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:50,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:50,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266009997] [2021-11-21 01:14:50,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266009997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:50,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:50,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 13 [2021-11-21 01:14:50,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429193728] [2021-11-21 01:14:50,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:50,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:14:50,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:14:50,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:14:50,649 INFO L87 Difference]: Start difference. First operand 179 states and 216 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:14:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:52,691 INFO L93 Difference]: Finished difference Result 177 states and 211 transitions. [2021-11-21 01:14:52,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:14:52,692 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-21 01:14:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:52,694 INFO L225 Difference]: With dead ends: 177 [2021-11-21 01:14:52,694 INFO L226 Difference]: Without dead ends: 177 [2021-11-21 01:14:52,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:14:52,696 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 264 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:52,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 467 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-21 01:14:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-21 01:14:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 169. [2021-11-21 01:14:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 147 states have internal predecessors, (169), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-21 01:14:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 199 transitions. [2021-11-21 01:14:52,709 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 199 transitions. Word has length 22 [2021-11-21 01:14:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:52,710 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 199 transitions. [2021-11-21 01:14:52,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:14:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 199 transitions. [2021-11-21 01:14:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:14:52,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:52,712 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:52,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-21 01:14:52,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:52,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting list_addErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:14:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:52,925 INFO L85 PathProgramCache]: Analyzing trace with hash -955894216, now seen corresponding path program 1 times [2021-11-21 01:14:52,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:52,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255190526] [2021-11-21 01:14:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:52,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:52,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:52,927 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:52,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:14:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:53,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 01:14:53,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:53,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:14:53,808 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 01:14:53,808 INFO L388 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 3 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:14:53,829 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:14:53,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2021-11-21 01:14:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:54,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:57,266 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:14:57,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2021-11-21 01:15:03,051 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:15:03,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-11-21 01:15:07,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-11-21 01:15:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:07,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:15:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255190526] [2021-11-21 01:15:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255190526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:15:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1135056358] [2021-11-21 01:15:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:07,692 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:15:07,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:15:07,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:15:07,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-21 01:15:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:08,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:15:08,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:15:08,146 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:15:08,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:15:08,159 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:15:08,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:15:09,232 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 01:15:09,232 INFO L388 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 3 case distinctions, treesize of input 36 treesize of output 41 [2021-11-21 01:15:09,242 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:15:09,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2021-11-21 01:15:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:15:09,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:15:11,896 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_24| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24|))))) (let ((.cse0 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))) (and (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24| (_ bv12 32)) |c_~#gl_list~0.base|)) (bvule |c_~#gl_list~0.offset| .cse0))))) is different from false [2021-11-21 01:15:12,125 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:15:12,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2021-11-21 01:15:12,972 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:15:12,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 01:15:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2021-11-21 01:15:15,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1135056358] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:15:15,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748235477] [2021-11-21 01:15:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:15,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:15:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:15:15,554 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:15:15,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 01:15:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:15,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-21 01:15:15,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:15:16,290 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:15:16,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-11-21 01:15:16,311 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:15:16,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-11-21 01:15:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:16,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:15:19,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2021-11-21 01:15:19,029 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:15:19,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2021-11-21 01:15:23,587 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:15:23,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 53 [2021-11-21 01:15:23,610 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 01:15:23,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-11-21 01:15:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:24,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748235477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:15:24,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:15:24,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8, 8, 7, 8] total 37 [2021-11-21 01:15:24,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513247090] [2021-11-21 01:15:24,091 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:15:24,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 01:15:24,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:15:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 01:15:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1081, Unknown=4, NotChecked=70, Total=1406 [2021-11-21 01:15:24,094 INFO L87 Difference]: Start difference. First operand 169 states and 199 transitions. Second operand has 38 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 34 states have internal predecessors, (102), 7 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:15:35,708 WARN L227 SmtUtils]: Spent 10.70s on a formula simplification. DAG size of input: 47 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:15:50,473 WARN L227 SmtUtils]: Spent 10.54s on a formula simplification. DAG size of input: 57 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:16:31,976 WARN L227 SmtUtils]: Spent 34.55s on a formula simplification. DAG size of input: 57 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:16:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:34,906 INFO L93 Difference]: Finished difference Result 193 states and 225 transitions. [2021-11-21 01:16:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:16:34,907 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 34 states have internal predecessors, (102), 7 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 24 [2021-11-21 01:16:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:34,909 INFO L225 Difference]: With dead ends: 193 [2021-11-21 01:16:34,910 INFO L226 Difference]: Without dead ends: 193 [2021-11-21 01:16:34,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 99 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 94.7s TimeCoverageRelationStatistics Valid=421, Invalid=1643, Unknown=10, NotChecked=88, Total=2162 [2021-11-21 01:16:34,912 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 169 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 722 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:34,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1020 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 183 Invalid, 0 Unknown, 722 Unchecked, 0.8s Time] [2021-11-21 01:16:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-21 01:16:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 179. [2021-11-21 01:16:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 118 states have (on average 1.5677966101694916) internal successors, (185), 156 states have internal predecessors, (185), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-21 01:16:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 217 transitions. [2021-11-21 01:16:34,928 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 217 transitions. Word has length 24 [2021-11-21 01:16:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:34,929 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 217 transitions. [2021-11-21 01:16:34,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 34 states have internal predecessors, (102), 7 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:16:34,930 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 217 transitions. [2021-11-21 01:16:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:16:34,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:34,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:34,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:35,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-21 01:16:35,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:35,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:35,545 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting list_addErr2REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-21 01:16:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash 508658616, now seen corresponding path program 1 times [2021-11-21 01:16:35,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:35,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908430322] [2021-11-21 01:16:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:35,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:35,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:35,556 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:35,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 01:16:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:35,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-21 01:16:35,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:35,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:16:36,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:16:36,416 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-21 01:16:36,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2021-11-21 01:16:36,720 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-21 01:16:36,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 36 [2021-11-21 01:16:37,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2021-11-21 01:16:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:37,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:39,742 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~0#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~0#1.base|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_15) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))) (_ bv1 1)))) is different from false [2021-11-21 01:16:41,808 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~0#1.base_28| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_28|)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_28| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_28| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_28|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_15) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))) (_ bv1 1))))) is different from false [2021-11-21 01:16:42,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:42,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908430322] [2021-11-21 01:16:42,263 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:16:42,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1536475285] [2021-11-21 01:16:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:42,264 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:16:42,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:16:42,267 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:16:42,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-21 01:16:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:42,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-21 01:16:42,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:42,811 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:16:42,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-21 01:16:43,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:16:44,110 INFO L354 Elim1Store]: treesize reduction 81, result has 35.7 percent of original size [2021-11-21 01:16:44,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 80 [2021-11-21 01:16:44,561 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-21 01:16:44,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 41 [2021-11-21 01:16:45,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2021-11-21 01:16:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:45,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:54,739 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~0#1.base_30| (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_30|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_30| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_30| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_30|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_17) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_19) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_20)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))))))) (_ bv1 1))))) is different from false [2021-11-21 01:17:14,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23072 treesize of output 23008 [2021-11-21 01:17:15,090 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:17:15,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306828219] [2021-11-21 01:17:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:15,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:17:15,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:17:15,096 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:17:15,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-21 01:17:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:15,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-21 01:17:15,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:15,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:17:15,947 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-21 01:17:15,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 64 [2021-11-21 01:17:16,190 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-21 01:17:16,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 34 [2021-11-21 01:17:16,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2021-11-21 01:17:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:16,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:28,877 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~0#1.base_32| (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_32| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_32| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_32|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_17) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_19) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_20)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_32|))))) is different from false [2021-11-21 01:17:31,312 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~0#1.base_32| (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_32| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_32| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_32|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_17) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_19) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_20)) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|)))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_32|))))) is different from false [2021-11-21 01:17:31,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23208 treesize of output 23144 [2021-11-21 01:17:31,474 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:17:31,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:31,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-21 01:17:31,475 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-21 01:17:31,475 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-21 01:17:31,483 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr2REQUIRES_VIOLATION (47 of 48 remaining) [2021-11-21 01:17:31,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr0REQUIRES_VIOLATION (46 of 48 remaining) [2021-11-21 01:17:31,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr1REQUIRES_VIOLATION (45 of 48 remaining) [2021-11-21 01:17:31,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr0REQUIRES_VIOLATION (44 of 48 remaining) [2021-11-21 01:17:31,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr1REQUIRES_VIOLATION (43 of 48 remaining) [2021-11-21 01:17:31,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr0REQUIRES_VIOLATION (42 of 48 remaining) [2021-11-21 01:17:31,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr1REQUIRES_VIOLATION (41 of 48 remaining) [2021-11-21 01:17:31,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr2REQUIRES_VIOLATION (40 of 48 remaining) [2021-11-21 01:17:31,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr3REQUIRES_VIOLATION (39 of 48 remaining) [2021-11-21 01:17:31,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr0REQUIRES_VIOLATION (38 of 48 remaining) [2021-11-21 01:17:31,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr1REQUIRES_VIOLATION (37 of 48 remaining) [2021-11-21 01:17:31,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr3REQUIRES_VIOLATION (36 of 48 remaining) [2021-11-21 01:17:31,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr4REQUIRES_VIOLATION (35 of 48 remaining) [2021-11-21 01:17:31,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr5REQUIRES_VIOLATION (34 of 48 remaining) [2021-11-21 01:17:31,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr6REQUIRES_VIOLATION (33 of 48 remaining) [2021-11-21 01:17:31,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr7REQUIRES_VIOLATION (32 of 48 remaining) [2021-11-21 01:17:31,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr8REQUIRES_VIOLATION (31 of 48 remaining) [2021-11-21 01:17:31,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr9REQUIRES_VIOLATION (30 of 48 remaining) [2021-11-21 01:17:31,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (29 of 48 remaining) [2021-11-21 01:17:31,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (28 of 48 remaining) [2021-11-21 01:17:31,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (27 of 48 remaining) [2021-11-21 01:17:31,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (26 of 48 remaining) [2021-11-21 01:17:31,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (25 of 48 remaining) [2021-11-21 01:17:31,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (24 of 48 remaining) [2021-11-21 01:17:31,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (23 of 48 remaining) [2021-11-21 01:17:31,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (22 of 48 remaining) [2021-11-21 01:17:31,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (21 of 48 remaining) [2021-11-21 01:17:31,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (20 of 48 remaining) [2021-11-21 01:17:31,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (19 of 48 remaining) [2021-11-21 01:17:31,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (18 of 48 remaining) [2021-11-21 01:17:31,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (17 of 48 remaining) [2021-11-21 01:17:31,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (16 of 48 remaining) [2021-11-21 01:17:31,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (15 of 48 remaining) [2021-11-21 01:17:31,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (14 of 48 remaining) [2021-11-21 01:17:31,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (13 of 48 remaining) [2021-11-21 01:17:31,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (12 of 48 remaining) [2021-11-21 01:17:31,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (11 of 48 remaining) [2021-11-21 01:17:31,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (10 of 48 remaining) [2021-11-21 01:17:31,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (9 of 48 remaining) [2021-11-21 01:17:31,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (8 of 48 remaining) [2021-11-21 01:17:31,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (7 of 48 remaining) [2021-11-21 01:17:31,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (6 of 48 remaining) [2021-11-21 01:17:31,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (5 of 48 remaining) [2021-11-21 01:17:31,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (4 of 48 remaining) [2021-11-21 01:17:31,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (3 of 48 remaining) [2021-11-21 01:17:31,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE (2 of 48 remaining) [2021-11-21 01:17:31,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (1 of 48 remaining) [2021-11-21 01:17:31,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK (0 of 48 remaining) [2021-11-21 01:17:31,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:31,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:31,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:32,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:17:32,116 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:32,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:17:32,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:17:32 BoogieIcfgContainer [2021-11-21 01:17:32,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:17:32,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:17:32,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:17:32,131 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:17:32,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:13:45" (3/4) ... [2021-11-21 01:17:32,138 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:17:32,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:17:32,139 INFO L158 Benchmark]: Toolchain (without parser) took 228476.53ms. Allocated memory was 58.7MB in the beginning and 262.1MB in the end (delta: 203.4MB). Free memory was 35.2MB in the beginning and 87.5MB in the end (delta: -52.3MB). Peak memory consumption was 150.3MB. Max. memory is 16.1GB. [2021-11-21 01:17:32,139 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:17:32,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 913.16ms. Allocated memory is still 58.7MB. Free memory was 35.0MB in the beginning and 28.7MB in the end (delta: 6.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:17:32,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.97ms. Allocated memory is still 58.7MB. Free memory was 28.5MB in the beginning and 26.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:17:32,141 INFO L158 Benchmark]: Boogie Preprocessor took 107.61ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 26.1MB in the beginning and 53.8MB in the end (delta: -27.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-21 01:17:32,141 INFO L158 Benchmark]: RCFGBuilder took 1176.17ms. Allocated memory is still 71.3MB. Free memory was 53.8MB in the beginning and 50.3MB in the end (delta: 3.5MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-11-21 01:17:32,143 INFO L158 Benchmark]: TraceAbstraction took 226154.94ms. Allocated memory was 71.3MB in the beginning and 262.1MB in the end (delta: 190.8MB). Free memory was 49.6MB in the beginning and 87.5MB in the end (delta: -37.9MB). Peak memory consumption was 151.7MB. Max. memory is 16.1GB. [2021-11-21 01:17:32,143 INFO L158 Benchmark]: Witness Printer took 7.26ms. Allocated memory is still 262.1MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:17:32,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 913.16ms. Allocated memory is still 58.7MB. Free memory was 35.0MB in the beginning and 28.7MB in the end (delta: 6.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.97ms. Allocated memory is still 58.7MB. Free memory was 28.5MB in the beginning and 26.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.61ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 26.1MB in the beginning and 53.8MB in the end (delta: -27.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * RCFGBuilder took 1176.17ms. Allocated memory is still 71.3MB. Free memory was 53.8MB in the beginning and 50.3MB in the end (delta: 3.5MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * TraceAbstraction took 226154.94ms. Allocated memory was 71.3MB in the beginning and 262.1MB in the end (delta: 190.8MB). Free memory was 49.6MB in the beginning and 87.5MB in the end (delta: -37.9MB). Peak memory consumption was 151.7MB. Max. memory is 16.1GB. * Witness Printer took 7.26ms. Allocated memory is still 262.1MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L564] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L620] CALL gl_read() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new [L536] new->next = next [L537] new->prev = prev [L538] prev->next = new [L547] RET __list_add(new, head, head->next) [L571] RET list_add(&node->linkage, &gl_list) [L576] RET gl_insert(__VERIFIER_nondet_int()) [L578] COND TRUE __VERIFIER_nondet_int() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 131 locations, 48 error locations. Started 1 CEGAR loops. OverallTime: 226.1s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 88.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1976 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1924 mSDsluCounter, 6625 SdHoareTripleChecker+Invalid, 10.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1215 IncrementalHoareTripleChecker+Unchecked, 5112 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3077 IncrementalHoareTripleChecker+Invalid, 4412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 1513 mSDtfsCounter, 3077 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 446 GetRequests, 267 SyntacticMatches, 16 SemanticMatches, 163 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 139.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=6, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 175 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 81.5s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 423 ConstructedInterpolants, 116 QuantifiedInterpolants, 6831 SizeOfPredicates, 140 NumberOfNonLiveVariables, 1460 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 33 InterpolantComputations, 26 PerfectInterpolantSequences, 28/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:17:32,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2e23-7533-4375-8399-f7db1244ae94/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN