./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:44:06,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:44:06,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:44:06,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:44:06,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:44:06,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:44:06,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:44:06,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:44:06,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:44:06,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:44:06,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:44:06,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:44:06,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:44:06,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:44:06,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:44:06,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:44:06,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:44:06,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:44:06,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:44:06,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:44:06,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:44:06,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:44:06,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:44:06,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:44:06,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:44:06,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:44:06,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:44:06,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:44:06,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:44:06,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:44:06,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:44:06,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:44:06,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:44:06,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:44:06,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:44:06,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:44:06,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:44:06,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:44:06,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:44:06,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:44:06,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:44:06,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 03:44:06,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:44:06,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:44:06,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:44:06,870 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:44:06,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:44:06,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:44:06,871 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:44:06,871 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:44:06,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:44:06,871 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:44:06,872 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:44:06,873 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:44:06,873 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:44:06,873 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:44:06,874 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:44:06,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:44:06,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:44:06,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:44:06,876 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:44:06,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:44:06,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:44:06,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:44:06,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:44:06,877 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 03:44:06,877 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 03:44:06,877 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 03:44:06,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:44:06,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:44:06,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:44:06,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:44:06,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:44:06,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:44:06,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:44:06,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:44:06,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:44:06,882 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:44:06,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:44:06,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:44:06,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:44:06,882 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_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2021-11-03 03:44:07,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:44:07,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:44:07,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:44:07,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:44:07,139 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:44:07,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-03 03:44:07,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data/985183ab2/97e3a1401b134376807d7280ce98a20d/FLAGa7628b6d8 [2021-11-03 03:44:07,897 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:44:07,898 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-03 03:44:07,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data/985183ab2/97e3a1401b134376807d7280ce98a20d/FLAGa7628b6d8 [2021-11-03 03:44:08,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data/985183ab2/97e3a1401b134376807d7280ce98a20d [2021-11-03 03:44:08,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:44:08,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:44:08,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:08,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:44:08,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:44:08,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:08" (1/1) ... [2021-11-03 03:44:08,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb961f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:08, skipping insertion in model container [2021-11-03 03:44:08,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:08" (1/1) ... [2021-11-03 03:44:08,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:44:08,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:44:08,694 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-03 03:44:08,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-03 03:44:08,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:44:08,877 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:44:08,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1759e813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:08, skipping insertion in model container [2021-11-03 03:44:08,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:08,878 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:44:08,880 INFO L168 Benchmark]: Toolchain (without parser) took 755.55 ms. Allocated memory was 109.1 MB in the beginning and 165.7 MB in the end (delta: 56.6 MB). Free memory was 78.1 MB in the beginning and 130.7 MB in the end (delta: -52.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:44:08,881 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:44:08,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.00 ms. Allocated memory was 109.1 MB in the beginning and 165.7 MB in the end (delta: 56.6 MB). Free memory was 77.8 MB in the beginning and 130.7 MB in the end (delta: -52.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:44:08,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 753.00 ms. Allocated memory was 109.1 MB in the beginning and 165.7 MB in the end (delta: 56.6 MB). Free memory was 77.8 MB in the beginning and 130.7 MB in the end (delta: -52.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:44:11,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:44:11,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:44:11,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:44:11,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:44:11,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:44:11,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:44:11,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:44:11,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:44:11,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:44:11,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:44:11,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:44:11,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:44:11,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:44:11,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:44:11,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:44:11,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:44:11,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:44:11,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:44:11,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:44:11,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:44:11,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:44:11,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:44:11,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:44:11,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:44:11,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:44:11,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:44:11,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:44:11,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:44:11,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:44:11,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:44:11,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:44:11,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:44:11,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:44:11,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:44:11,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:44:11,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:44:11,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:44:11,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:44:11,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:44:11,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:44:11,202 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 03:44:11,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:44:11,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:44:11,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:44:11,260 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:44:11,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:44:11,260 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:44:11,261 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:44:11,261 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:44:11,261 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:44:11,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:44:11,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:44:11,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:44:11,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:44:11,264 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:44:11,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:44:11,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:44:11,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:44:11,265 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 03:44:11,265 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 03:44:11,266 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 03:44:11,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:44:11,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:44:11,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:44:11,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:44:11,267 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:44:11,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:44:11,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:44:11,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:44:11,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:44:11,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:44:11,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:44:11,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:44:11,269 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:44:11,269 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:44:11,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:44:11,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:44:11,269 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_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2021-11-03 03:44:11,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:44:11,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:44:11,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:44:11,738 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:44:11,740 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:44:11,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-03 03:44:11,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data/012851ee6/ae807dd8e85e48d590c972a627f8b6d8/FLAGfcc7dade3 [2021-11-03 03:44:12,621 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:44:12,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-03 03:44:12,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data/012851ee6/ae807dd8e85e48d590c972a627f8b6d8/FLAGfcc7dade3 [2021-11-03 03:44:12,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/data/012851ee6/ae807dd8e85e48d590c972a627f8b6d8 [2021-11-03 03:44:12,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:44:12,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:44:12,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:12,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:44:12,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:44:12,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:12" (1/1) ... [2021-11-03 03:44:12,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f23ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12, skipping insertion in model container [2021-11-03 03:44:12,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:12" (1/1) ... [2021-11-03 03:44:12,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:44:12,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:44:13,405 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-03 03:44:13,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-03 03:44:13,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:44:13,655 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:44:13,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:44:13,718 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-03 03:44:13,798 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-03 03:44:13,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:44:13,811 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:44:13,848 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-03 03:44:13,944 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-03 03:44:13,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:44:14,030 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:44:14,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14 WrapperNode [2021-11-03 03:44:14,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:14,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:44:14,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:44:14,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:44:14,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:44:14,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:44:14,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:44:14,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:44:14,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:44:14,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:44:14,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:44:14,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:44:14,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (1/1) ... [2021-11-03 03:44:14,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:44:14,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:44:14,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:44:14,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:44:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:44:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:44:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:44:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:44:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:44:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:44:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:44:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:44:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:44:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:44:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:44:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:44:20,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:44:20,681 INFO L299 CfgBuilder]: Removed 136 assume(true) statements. [2021-11-03 03:44:20,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:20 BoogieIcfgContainer [2021-11-03 03:44:20,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:44:20,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:44:20,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:44:20,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:44:20,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:44:12" (1/3) ... [2021-11-03 03:44:20,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5c6712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:20, skipping insertion in model container [2021-11-03 03:44:20,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:14" (2/3) ... [2021-11-03 03:44:20,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5c6712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:20, skipping insertion in model container [2021-11-03 03:44:20,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:20" (3/3) ... [2021-11-03 03:44:20,695 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-1.i [2021-11-03 03:44:20,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:44:20,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 565 error locations. [2021-11-03 03:44:20,750 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:44:20,757 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:44:20,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 565 error locations. [2021-11-03 03:44:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 1183 states, 617 states have (on average 2.212317666126418) internal successors, (1365), 1182 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 03:44:20,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:20,816 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 03:44:20,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:20,823 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-03 03:44:20,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:20,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424111564] [2021-11-03 03:44:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:20,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:20,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:20,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:20,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:44:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:21,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:44:21,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:21,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:44:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:21,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:21,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:21,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424111564] [2021-11-03 03:44:21,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424111564] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:21,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:21,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:44:21,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137349372] [2021-11-03 03:44:21,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:21,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:21,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:21,179 INFO L87 Difference]: Start difference. First operand has 1183 states, 617 states have (on average 2.212317666126418) internal successors, (1365), 1182 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:23,488 INFO L93 Difference]: Finished difference Result 1247 states and 1347 transitions. [2021-11-03 03:44:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-03 03:44:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:23,521 INFO L225 Difference]: With dead ends: 1247 [2021-11-03 03:44:23,522 INFO L226 Difference]: Without dead ends: 1245 [2021-11-03 03:44:23,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-03 03:44:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1203. [2021-11-03 03:44:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 652 states have (on average 2.0291411042944785) internal successors, (1323), 1202 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1323 transitions. [2021-11-03 03:44:23,633 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1323 transitions. Word has length 3 [2021-11-03 03:44:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:23,634 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1323 transitions. [2021-11-03 03:44:23,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1323 transitions. [2021-11-03 03:44:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 03:44:23,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:23,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 03:44:23,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:44:23,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:23,843 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-03 03:44:23,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:23,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302144718] [2021-11-03 03:44:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:23,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:23,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:23,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:44:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:24,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:24,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:24,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:44:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:24,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:24,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:24,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302144718] [2021-11-03 03:44:24,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302144718] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:24,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:24,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 03:44:24,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935648227] [2021-11-03 03:44:24,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:24,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:24,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:24,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:24,148 INFO L87 Difference]: Start difference. First operand 1203 states and 1323 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-11-03 03:44:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:29,431 INFO L93 Difference]: Finished difference Result 1801 states and 1983 transitions. [2021-11-03 03:44:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:29,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 3 [2021-11-03 03:44:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:29,442 INFO L225 Difference]: With dead ends: 1801 [2021-11-03 03:44:29,443 INFO L226 Difference]: Without dead ends: 1801 [2021-11-03 03:44:29,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2021-11-03 03:44:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1273. [2021-11-03 03:44:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 731 states have (on average 2.012311901504788) internal successors, (1471), 1272 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1471 transitions. [2021-11-03 03:44:29,486 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1471 transitions. Word has length 3 [2021-11-03 03:44:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:29,486 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 1471 transitions. [2021-11-03 03:44:29,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-11-03 03:44:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1471 transitions. [2021-11-03 03:44:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 03:44:29,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:29,487 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:29,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 03:44:29,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:29,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-03 03:44:29,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:29,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548450257] [2021-11-03 03:44:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:29,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:29,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:29,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:29,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:44:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:29,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:44:29,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:29,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:44:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:29,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:29,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:29,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548450257] [2021-11-03 03:44:29,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548450257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:29,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:29,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:44:29,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459716872] [2021-11-03 03:44:29,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:29,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:29,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:29,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:29,913 INFO L87 Difference]: Start difference. First operand 1273 states and 1471 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-11-03 03:44:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:32,149 INFO L93 Difference]: Finished difference Result 1598 states and 1818 transitions. [2021-11-03 03:44:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:32,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 8 [2021-11-03 03:44:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:32,158 INFO L225 Difference]: With dead ends: 1598 [2021-11-03 03:44:32,159 INFO L226 Difference]: Without dead ends: 1598 [2021-11-03 03:44:32,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-11-03 03:44:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1226. [2021-11-03 03:44:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 731 states have (on average 1.9411764705882353) internal successors, (1419), 1225 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1419 transitions. [2021-11-03 03:44:32,196 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1419 transitions. Word has length 8 [2021-11-03 03:44:32,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:32,196 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1419 transitions. [2021-11-03 03:44:32,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-11-03 03:44:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1419 transitions. [2021-11-03 03:44:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 03:44:32,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:32,198 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:32,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:32,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:32,411 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-03 03:44:32,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:32,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005060271] [2021-11-03 03:44:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:32,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:32,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:32,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:32,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:44:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:32,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:32,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:32,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:44:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:32,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:32,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:32,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005060271] [2021-11-03 03:44:32,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005060271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:32,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:32,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 03:44:32,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927478988] [2021-11-03 03:44:32,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:32,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:32,770 INFO L87 Difference]: Start difference. First operand 1226 states and 1419 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:39,198 INFO L93 Difference]: Finished difference Result 1748 states and 1929 transitions. [2021-11-03 03:44:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:39,199 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), 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 8 [2021-11-03 03:44:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:39,210 INFO L225 Difference]: With dead ends: 1748 [2021-11-03 03:44:39,210 INFO L226 Difference]: Without dead ends: 1748 [2021-11-03 03:44:39,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:39,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2021-11-03 03:44:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1455. [2021-11-03 03:44:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 970 states have (on average 1.947422680412371) internal successors, (1889), 1454 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1889 transitions. [2021-11-03 03:44:39,247 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1889 transitions. Word has length 8 [2021-11-03 03:44:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:39,248 INFO L470 AbstractCegarLoop]: Abstraction has 1455 states and 1889 transitions. [2021-11-03 03:44:39,248 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1889 transitions. [2021-11-03 03:44:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 03:44:39,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:39,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:39,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:39,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:39,463 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr564ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:39,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash 721234601, now seen corresponding path program 1 times [2021-11-03 03:44:39,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:39,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044266726] [2021-11-03 03:44:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:39,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:39,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:39,466 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:39,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:44:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:39,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:39,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:39,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:44:39,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:44:39,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:44:39,789 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 03:44:39,789 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 03:44:39,872 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 03:44:39,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 03:44:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:39,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:39,980 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:39,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044266726] [2021-11-03 03:44:39,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044266726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:39,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:39,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:44:39,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310842041] [2021-11-03 03:44:39,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:39,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:39,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:39,982 INFO L87 Difference]: Start difference. First operand 1455 states and 1889 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:42,423 INFO L93 Difference]: Finished difference Result 2057 states and 2743 transitions. [2021-11-03 03:44:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:42,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10 [2021-11-03 03:44:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:42,438 INFO L225 Difference]: With dead ends: 2057 [2021-11-03 03:44:42,439 INFO L226 Difference]: Without dead ends: 2057 [2021-11-03 03:44:42,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:44:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-11-03 03:44:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1455. [2021-11-03 03:44:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 970 states have (on average 1.9463917525773196) internal successors, (1888), 1454 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1888 transitions. [2021-11-03 03:44:42,483 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1888 transitions. Word has length 10 [2021-11-03 03:44:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:42,484 INFO L470 AbstractCegarLoop]: Abstraction has 1455 states and 1888 transitions. [2021-11-03 03:44:42,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1888 transitions. [2021-11-03 03:44:42,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:44:42,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:42,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:42,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:42,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:42,702 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-03 03:44:42,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:42,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611528408] [2021-11-03 03:44:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:42,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:42,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:42,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:42,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:44:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:42,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:44:42,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:42,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:42,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:42,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611528408] [2021-11-03 03:44:42,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611528408] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:42,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:42,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:44:42,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503438873] [2021-11-03 03:44:42,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:42,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:42,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:42,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:42,991 INFO L87 Difference]: Start difference. First operand 1455 states and 1888 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:43,022 INFO L93 Difference]: Finished difference Result 1422 states and 1854 transitions. [2021-11-03 03:44:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:43,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 03:44:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:43,029 INFO L225 Difference]: With dead ends: 1422 [2021-11-03 03:44:43,030 INFO L226 Difference]: Without dead ends: 1422 [2021-11-03 03:44:43,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-11-03 03:44:43,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1413. [2021-11-03 03:44:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 952 states have (on average 1.9380252100840336) internal successors, (1845), 1412 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1845 transitions. [2021-11-03 03:44:43,058 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1845 transitions. Word has length 18 [2021-11-03 03:44:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:43,058 INFO L470 AbstractCegarLoop]: Abstraction has 1413 states and 1845 transitions. [2021-11-03 03:44:43,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1845 transitions. [2021-11-03 03:44:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 03:44:43,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:43,060 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:43,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:43,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:43,271 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:43,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:43,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-03 03:44:43,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:43,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393334726] [2021-11-03 03:44:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:43,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:43,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:43,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:43,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:44:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:43,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:43,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:43,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:43,546 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:43,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393334726] [2021-11-03 03:44:43,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393334726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:43,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:43,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:44:43,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138091032] [2021-11-03 03:44:43,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:44:43,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:43,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:44:43,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:44:43,548 INFO L87 Difference]: Start difference. First operand 1413 states and 1845 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:43,620 INFO L93 Difference]: Finished difference Result 1401 states and 1826 transitions. [2021-11-03 03:44:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 20 [2021-11-03 03:44:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:43,626 INFO L225 Difference]: With dead ends: 1401 [2021-11-03 03:44:43,626 INFO L226 Difference]: Without dead ends: 1401 [2021-11-03 03:44:43,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-11-03 03:44:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1391. [2021-11-03 03:44:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 944 states have (on average 1.923728813559322) internal successors, (1816), 1390 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:43,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1816 transitions. [2021-11-03 03:44:43,654 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1816 transitions. Word has length 20 [2021-11-03 03:44:43,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:43,654 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1816 transitions. [2021-11-03 03:44:43,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:43,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1816 transitions. [2021-11-03 03:44:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 03:44:43,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:43,656 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:43,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:43,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:43,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:43,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-03 03:44:43,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:43,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297775215] [2021-11-03 03:44:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:43,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:43,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:43,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:43,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:44:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:44,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:44,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:44,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:44:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:44,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:44,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:44,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297775215] [2021-11-03 03:44:44,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297775215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:44,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:44,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:44:44,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150551534] [2021-11-03 03:44:44,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:44,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:44,338 INFO L87 Difference]: Start difference. First operand 1391 states and 1816 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:46,288 INFO L93 Difference]: Finished difference Result 2011 states and 2654 transitions. [2021-11-03 03:44:46,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-03 03:44:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:46,296 INFO L225 Difference]: With dead ends: 2011 [2021-11-03 03:44:46,296 INFO L226 Difference]: Without dead ends: 2011 [2021-11-03 03:44:46,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:44:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2021-11-03 03:44:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1387. [2021-11-03 03:44:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 944 states have (on average 1.9194915254237288) internal successors, (1812), 1386 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1812 transitions. [2021-11-03 03:44:46,338 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1812 transitions. Word has length 34 [2021-11-03 03:44:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:46,339 INFO L470 AbstractCegarLoop]: Abstraction has 1387 states and 1812 transitions. [2021-11-03 03:44:46,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1812 transitions. [2021-11-03 03:44:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 03:44:46,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:46,340 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:46,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:46,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:46,552 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-03 03:44:46,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:46,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348907946] [2021-11-03 03:44:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:46,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:46,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:46,554 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:46,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:44:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:46,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:44:46,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:46,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:44:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:47,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:47,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:47,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348907946] [2021-11-03 03:44:47,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348907946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:47,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:47,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:44:47,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410027213] [2021-11-03 03:44:47,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:47,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:47,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:47,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:47,520 INFO L87 Difference]: Start difference. First operand 1387 states and 1812 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:53,724 INFO L93 Difference]: Finished difference Result 1688 states and 1860 transitions. [2021-11-03 03:44:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:44:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 34 [2021-11-03 03:44:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:53,731 INFO L225 Difference]: With dead ends: 1688 [2021-11-03 03:44:53,731 INFO L226 Difference]: Without dead ends: 1688 [2021-11-03 03:44:53,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:44:53,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-11-03 03:44:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1383. [2021-11-03 03:44:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 944 states have (on average 1.9152542372881356) internal successors, (1808), 1382 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1808 transitions. [2021-11-03 03:44:53,756 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1808 transitions. Word has length 34 [2021-11-03 03:44:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:53,757 INFO L470 AbstractCegarLoop]: Abstraction has 1383 states and 1808 transitions. [2021-11-03 03:44:53,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1808 transitions. [2021-11-03 03:44:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 03:44:53,759 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:53,759 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:53,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:53,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:53,970 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1651334985, now seen corresponding path program 1 times [2021-11-03 03:44:53,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:53,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537048462] [2021-11-03 03:44:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:53,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:53,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:53,973 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:54,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:44:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:54,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:54,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:54,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:54,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:54,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537048462] [2021-11-03 03:44:54,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537048462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:54,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:54,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:44:54,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856254667] [2021-11-03 03:44:54,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:54,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:54,507 INFO L87 Difference]: Start difference. First operand 1383 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:54,556 INFO L93 Difference]: Finished difference Result 1386 states and 1807 transitions. [2021-11-03 03:44:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2021-11-03 03:44:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:54,563 INFO L225 Difference]: With dead ends: 1386 [2021-11-03 03:44:54,563 INFO L226 Difference]: Without dead ends: 1386 [2021-11-03 03:44:54,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:44:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-03 03:44:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1377. [2021-11-03 03:44:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 938 states have (on average 1.9168443496801706) internal successors, (1798), 1376 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1798 transitions. [2021-11-03 03:44:54,586 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1798 transitions. Word has length 49 [2021-11-03 03:44:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:54,586 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 1798 transitions. [2021-11-03 03:44:54,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1798 transitions. [2021-11-03 03:44:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 03:44:54,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:54,588 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:54,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:54,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:54,800 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1352588907, now seen corresponding path program 1 times [2021-11-03 03:44:54,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:54,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550894336] [2021-11-03 03:44:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:54,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:54,802 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:54,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:44:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:55,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:55,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:55,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:55,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:55,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550894336] [2021-11-03 03:44:55,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550894336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:55,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:55,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:44:55,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135784919] [2021-11-03 03:44:55,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:55,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:55,960 INFO L87 Difference]: Start difference. First operand 1377 states and 1798 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:56,210 INFO L93 Difference]: Finished difference Result 2009 states and 2668 transitions. [2021-11-03 03:44:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:56,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-03 03:44:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:56,218 INFO L225 Difference]: With dead ends: 2009 [2021-11-03 03:44:56,218 INFO L226 Difference]: Without dead ends: 2009 [2021-11-03 03:44:56,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-11-03 03:44:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1800. [2021-11-03 03:44:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1361 states have (on average 1.9103600293901544) internal successors, (2600), 1799 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2600 transitions. [2021-11-03 03:44:56,250 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2600 transitions. Word has length 57 [2021-11-03 03:44:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:56,250 INFO L470 AbstractCegarLoop]: Abstraction has 1800 states and 2600 transitions. [2021-11-03 03:44:56,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2600 transitions. [2021-11-03 03:44:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 03:44:56,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:56,252 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:56,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:56,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:56,464 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:44:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-03 03:44:56,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:56,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866005796] [2021-11-03 03:44:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:56,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:56,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:56,467 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:56,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:44:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:56,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:44:56,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:56,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:44:56,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:44:57,646 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 03:44:57,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-03 03:44:57,657 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 03:44:57,657 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 28 treesize of output 24 [2021-11-03 03:44:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:57,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:02,589 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:02,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866005796] [2021-11-03 03:45:02,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866005796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:02,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:02,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:45:02,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898294102] [2021-11-03 03:45:02,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:45:02,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:45:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 03:45:02,592 INFO L87 Difference]: Start difference. First operand 1800 states and 2600 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:16,635 INFO L93 Difference]: Finished difference Result 2539 states and 3755 transitions. [2021-11-03 03:45:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:45:16,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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 60 [2021-11-03 03:45:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:16,652 INFO L225 Difference]: With dead ends: 2539 [2021-11-03 03:45:16,652 INFO L226 Difference]: Without dead ends: 2539 [2021-11-03 03:45:16,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 03:45:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-11-03 03:45:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 1334. [2021-11-03 03:45:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 935 states have (on average 1.8160427807486632) internal successors, (1698), 1333 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1698 transitions. [2021-11-03 03:45:16,683 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1698 transitions. Word has length 60 [2021-11-03 03:45:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:16,683 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 1698 transitions. [2021-11-03 03:45:16,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1698 transitions. [2021-11-03 03:45:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 03:45:16,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:16,685 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:16,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:16,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:16,899 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:45:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-03 03:45:16,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:16,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342956281] [2021-11-03 03:45:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:16,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:16,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:16,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:16,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:45:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:17,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:45:17,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:17,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:45:17,613 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 24 treesize of output 20 [2021-11-03 03:45:17,667 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 26 treesize of output 14 [2021-11-03 03:45:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:17,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:17,932 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:17,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342956281] [2021-11-03 03:45:17,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342956281] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:17,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:17,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:45:17,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74055515] [2021-11-03 03:45:17,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:45:17,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:17,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:45:17,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:45:17,934 INFO L87 Difference]: Start difference. First operand 1334 states and 1698 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:23,523 INFO L93 Difference]: Finished difference Result 2057 states and 2565 transitions. [2021-11-03 03:45:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:45:23,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 66 [2021-11-03 03:45:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:23,532 INFO L225 Difference]: With dead ends: 2057 [2021-11-03 03:45:23,532 INFO L226 Difference]: Without dead ends: 2057 [2021-11-03 03:45:23,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:45:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-11-03 03:45:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1333. [2021-11-03 03:45:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 935 states have (on average 1.8149732620320855) internal successors, (1697), 1332 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1697 transitions. [2021-11-03 03:45:23,557 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1697 transitions. Word has length 66 [2021-11-03 03:45:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:23,558 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 1697 transitions. [2021-11-03 03:45:23,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1697 transitions. [2021-11-03 03:45:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 03:45:23,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:23,563 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:23,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 03:45:23,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:23,779 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:45:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-03 03:45:23,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:23,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030496426] [2021-11-03 03:45:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:23,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:23,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:23,781 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:23,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 03:45:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:24,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 03:45:24,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:24,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:45:24,465 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 19 treesize of output 15 [2021-11-03 03:45:24,474 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 13 treesize of output 9 [2021-11-03 03:45:24,549 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 39 treesize of output 27 [2021-11-03 03:45:24,554 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 24 treesize of output 12 [2021-11-03 03:45:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:24,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:25,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:25,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030496426] [2021-11-03 03:45:25,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030496426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:25,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:25,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 03:45:25,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536194962] [2021-11-03 03:45:25,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:45:25,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:25,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:45:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:45:25,212 INFO L87 Difference]: Start difference. First operand 1333 states and 1697 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:43,876 INFO L93 Difference]: Finished difference Result 2051 states and 2597 transitions. [2021-11-03 03:45:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 03:45:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 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 67 [2021-11-03 03:45:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:43,886 INFO L225 Difference]: With dead ends: 2051 [2021-11-03 03:45:43,886 INFO L226 Difference]: Without dead ends: 2051 [2021-11-03 03:45:43,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:45:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-11-03 03:45:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1332. [2021-11-03 03:45:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 935 states have (on average 1.813903743315508) internal successors, (1696), 1331 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1696 transitions. [2021-11-03 03:45:43,905 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1696 transitions. Word has length 67 [2021-11-03 03:45:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:43,905 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 1696 transitions. [2021-11-03 03:45:43,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1696 transitions. [2021-11-03 03:45:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 03:45:43,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:43,906 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:43,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:44,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:44,106 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:45:44,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:44,107 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-03 03:45:44,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:44,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204741111] [2021-11-03 03:45:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:44,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:44,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:44,108 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:44,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 03:45:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:44,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:45:44,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:44,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:44,908 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:44,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204741111] [2021-11-03 03:45:44,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204741111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:44,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:44,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:45:44,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756427887] [2021-11-03 03:45:44,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:45:44,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:44,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:45:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:45:44,911 INFO L87 Difference]: Start difference. First operand 1332 states and 1696 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:45,037 INFO L93 Difference]: Finished difference Result 2244 states and 2858 transitions. [2021-11-03 03:45:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:45:45,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 71 [2021-11-03 03:45:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:45,044 INFO L225 Difference]: With dead ends: 2244 [2021-11-03 03:45:45,044 INFO L226 Difference]: Without dead ends: 2244 [2021-11-03 03:45:45,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:45:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2021-11-03 03:45:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1335. [2021-11-03 03:45:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 938 states have (on average 1.8113006396588487) internal successors, (1699), 1334 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1699 transitions. [2021-11-03 03:45:45,062 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1699 transitions. Word has length 71 [2021-11-03 03:45:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:45,063 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1699 transitions. [2021-11-03 03:45:45,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1699 transitions. [2021-11-03 03:45:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 03:45:45,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:45,063 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:45,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:45,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:45,267 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:45:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:45,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-03 03:45:45,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:45,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922370968] [2021-11-03 03:45:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:45,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:45,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:45,280 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:45,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:45:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:45,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:45:45,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:45,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:46,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:46,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922370968] [2021-11-03 03:45:46,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922370968] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:46,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1166158834] [2021-11-03 03:45:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:46,261 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:45:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:45:46,271 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:45:46,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 03:45:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:46,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:45:46,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:47,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:47,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1166158834] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:47,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953597878] [2021-11-03 03:45:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:47,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:47,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:47,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:45:47,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-03 03:45:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:47,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:45:47,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:48,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:48,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953597878] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:48,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:45:48,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 03:45:48,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000847636] [2021-11-03 03:45:48,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:45:48,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:45:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:45:48,239 INFO L87 Difference]: Start difference. First operand 1335 states and 1699 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:48,681 INFO L93 Difference]: Finished difference Result 2250 states and 2864 transitions. [2021-11-03 03:45:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:45:48,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 73 [2021-11-03 03:45:48,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:48,686 INFO L225 Difference]: With dead ends: 2250 [2021-11-03 03:45:48,686 INFO L226 Difference]: Without dead ends: 2250 [2021-11-03 03:45:48,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:45:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-11-03 03:45:48,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1341. [2021-11-03 03:45:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 944 states have (on average 1.80614406779661) internal successors, (1705), 1340 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1705 transitions. [2021-11-03 03:45:48,730 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1705 transitions. Word has length 73 [2021-11-03 03:45:48,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:48,730 INFO L470 AbstractCegarLoop]: Abstraction has 1341 states and 1705 transitions. [2021-11-03 03:45:48,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:48,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1705 transitions. [2021-11-03 03:45:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 03:45:48,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:48,731 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:48,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:48,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:49,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:49,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:49,335 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:45:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-03 03:45:49,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:49,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265824020] [2021-11-03 03:45:49,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:45:49,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:49,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:49,337 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:49,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 03:45:50,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:45:50,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:45:50,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:45:50,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:50,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:50,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:50,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265824020] [2021-11-03 03:45:50,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265824020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:50,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1338728309] [2021-11-03 03:45:50,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:45:50,960 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:45:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:45:50,961 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:45:50,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 03:45:52,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:45:52,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:45:52,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:45:52,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:52,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:52,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1338728309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:52,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893694267] [2021-11-03 03:45:52,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:45:52,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:52,738 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:45:52,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 03:46:43,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:46:43,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:46:43,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 03:46:43,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:43,868 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 03:46:43,868 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 18 treesize of output 18 [2021-11-03 03:46:43,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:46:43,947 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 23 treesize of output 19 [2021-11-03 03:46:43,961 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 13 treesize of output 9 [2021-11-03 03:46:44,304 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-03 03:46:44,304 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 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-03 03:46:44,329 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 03:46:44,329 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 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-03 03:46:44,543 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 03:46:44,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 88 treesize of output 90 [2021-11-03 03:46:47,876 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:46:47,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 84 treesize of output 74 [2021-11-03 03:46:48,592 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 03:46:48,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 88 treesize of output 90 [2021-11-03 03:46:48,641 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:46:48,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 84 treesize of output 74 [2021-11-03 03:46:49,710 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 03:46:49,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 88 treesize of output 90 [2021-11-03 03:46:50,253 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:46:50,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 84 treesize of output 74 [2021-11-03 03:46:51,492 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 03:46:51,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 88 treesize of output 90 [2021-11-03 03:46:53,481 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:46:53,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 84 treesize of output 74 [2021-11-03 03:46:53,774 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:46:53,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2021-11-03 03:46:53,892 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-03 03:46:53,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 105 treesize of output 101 [2021-11-03 03:46:54,309 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 03:46:54,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-03 03:46:54,320 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 03:46:54,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-03 03:46:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 03:46:54,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:27,499 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_9 (_ BitVec 32))) (let ((.cse4 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~user~0.base) .cse4)) (.cse1 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse3 (bvadd v_subst_9 |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) |ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 .cse2) .cse3 .cse2))) c_ULTIMATE.start_main_~user~0.base) .cse4) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 (_ bv0 32)) .cse3 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse4)))))) (forall ((v_subst_10 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse5 (let ((.cse8 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~user~0.base) .cse8))) (store |c_#memory_$Pointer$.offset| .cse6 (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) |ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| .cse6) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse7) (bvadd v_subst_10 |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse7)))) c_ULTIMATE.start_main_~user~0.base) .cse8)))) (bvule (bvadd (_ bv16 32) .cse5) (bvadd .cse5 (_ bv20 32)))))) is different from false [2021-11-03 03:48:35,776 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 26 treesize of output 24 [2021-11-03 03:48:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 5 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 03:48:36,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893694267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:48:36,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:48:36,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 9, 9] total 33 [2021-11-03 03:48:36,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803435082] [2021-11-03 03:48:36,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 03:48:36,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:36,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 03:48:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=841, Unknown=7, NotChecked=60, Total=1056 [2021-11-03 03:48:36,062 INFO L87 Difference]: Start difference. First operand 1341 states and 1705 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:50,864 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (= (select |c_#length| |c_ULTIMATE.start_main_#t~mem42.base|) (_ bv44 32)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#amount| (_ bv44 32)) (= (_ bv0 32) |c_ULTIMATE.start_main_#t~mem42.offset|) (forall ((v_subst_10 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) |ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse2) (bvadd v_subst_10 |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse2))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~user~0.base))) (_ bv1 1))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse3 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse4 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) c_ULTIMATE.start_main_~user~0.base) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse4))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_9 (_ BitVec 32))) (let ((.cse5 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse7 (bvadd v_subst_9 |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse8 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) |ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse5 .cse6) .cse7 .cse6))) c_ULTIMATE.start_main_~user~0.base) .cse8) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse5 (_ bv0 32)) .cse7 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse8)))))) is different from false [2021-11-03 03:50:18,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:18,053 INFO L93 Difference]: Finished difference Result 2275 states and 2889 transitions. [2021-11-03 03:50:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 03:50:18,053 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 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 77 [2021-11-03 03:50:18,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:18,056 INFO L225 Difference]: With dead ends: 2275 [2021-11-03 03:50:18,057 INFO L226 Difference]: Without dead ends: 2275 [2021-11-03 03:50:18,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 417 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 102.1s TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=8, NotChecked=258, Total=4556 [2021-11-03 03:50:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2021-11-03 03:50:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 1352. [2021-11-03 03:50:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 956 states have (on average 1.794979079497908) internal successors, (1716), 1351 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1716 transitions. [2021-11-03 03:50:18,075 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1716 transitions. Word has length 77 [2021-11-03 03:50:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:18,075 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1716 transitions. [2021-11-03 03:50:18,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1716 transitions. [2021-11-03 03:50:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 03:50:18,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:18,076 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:18,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:18,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:18,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:18,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:18,679 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:50:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash 688279333, now seen corresponding path program 1 times [2021-11-03 03:50:18,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:18,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831727114] [2021-11-03 03:50:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:18,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:18,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:18,681 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:18,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 03:50:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:19,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:50:19,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:20,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:21,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:21,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831727114] [2021-11-03 03:50:21,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831727114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:21,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1394847587] [2021-11-03 03:50:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:21,635 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:21,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:50:21,636 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:50:21,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 03:50:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:22,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:50:22,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:23,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:23,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1394847587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:23,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886391475] [2021-11-03 03:50:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:23,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:23,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:23,288 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:50:23,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-03 03:50:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:24,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:50:24,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:24,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:24,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886391475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:24,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:50:24,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 34 [2021-11-03 03:50:24,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048176893] [2021-11-03 03:50:24,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 03:50:24,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 03:50:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 03:50:24,783 INFO L87 Difference]: Start difference. First operand 1352 states and 1716 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:39,035 INFO L93 Difference]: Finished difference Result 2285 states and 2899 transitions. [2021-11-03 03:50:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-03 03:50:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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 85 [2021-11-03 03:50:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:39,039 INFO L225 Difference]: With dead ends: 2285 [2021-11-03 03:50:39,039 INFO L226 Difference]: Without dead ends: 2285 [2021-11-03 03:50:39,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1446, Invalid=2586, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 03:50:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-11-03 03:50:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1376. [2021-11-03 03:50:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 980 states have (on average 1.7755102040816326) internal successors, (1740), 1375 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1740 transitions. [2021-11-03 03:50:39,064 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1740 transitions. Word has length 85 [2021-11-03 03:50:39,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:39,064 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1740 transitions. [2021-11-03 03:50:39,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1740 transitions. [2021-11-03 03:50:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 03:50:39,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:39,066 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:39,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:39,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:39,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:39,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:39,683 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 561 more)] === [2021-11-03 03:50:39,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2300123, now seen corresponding path program 2 times [2021-11-03 03:50:39,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:39,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528328317] [2021-11-03 03:50:39,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:50:39,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:39,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:39,686 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:39,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 03:50:40,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:50:40,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:40,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 03:50:40,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:42,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:46,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:46,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528328317] [2021-11-03 03:50:46,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528328317] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:46,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [39740431] [2021-11-03 03:50:46,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:50:46,957 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:46,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:50:46,958 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:50:46,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-03 03:50:48,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:50:48,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:48,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 03:50:48,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:49,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:49,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [39740431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:49,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875583488] [2021-11-03 03:50:49,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:50:49,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:49,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:49,473 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:50:49,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f6da21-5b77-4f6c-9d0d-2644a0acd139/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-03 03:51:56,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:51:56,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:51:56,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-03 03:51:56,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:56,682 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 03:51:56,682 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 18 treesize of output 18 [2021-11-03 03:51:56,813 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 18 treesize of output 14 [2021-11-03 03:51:57,536 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 03:51:57,536 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 1 case distinctions, treesize of input 33 treesize of output 26 [2021-11-03 03:51:58,359 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:51:58,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:51:58,632 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:51:58,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:51:59,480 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:51:59,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:51:59,773 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:51:59,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:00,088 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:00,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:01,592 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:01,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:01,897 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:01,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:03,725 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:03,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:08,147 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:08,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:10,334 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:10,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:11,982 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:11,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:12,281 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:12,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:12,577 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:12,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:14,052 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:14,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:14,359 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:14,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:14,655 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:14,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:14,962 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:14,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:16,601 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:16,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:16,923 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:16,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:19,198 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:19,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:20,727 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:20,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:21,049 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:21,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:21,365 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:21,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:23,313 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:23,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:23,571 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:23,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:23,831 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:23,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:25,721 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:25,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:26,036 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:52:26,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-03 03:52:26,356 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:52:26,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 47 [2021-11-03 03:52:26,765 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 03:52:26,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 27 [2021-11-03 03:52:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-03 03:52:26,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:55:56,560 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237_324| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237_312| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237_324| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr237_312| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))))))))))))) (_ bv1 1)))) is different from false