./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.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_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/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_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/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_510846fa-9362-4abf-bc0a-2955be2c928c/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 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:32:50,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:32:50,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:32:50,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:32:50,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:32:50,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:32:50,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:32:50,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:32:50,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:32:50,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:32:50,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:32:50,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:32:50,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:32:50,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:32:50,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:32:50,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:32:50,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:32:50,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:32:50,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:32:50,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:32:50,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:32:50,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:32:50,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:32:50,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:32:50,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:32:50,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:32:50,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:32:50,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:32:50,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:32:50,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:32:50,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:32:50,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:32:50,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:32:50,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:32:50,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:32:50,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:32:50,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:32:50,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:32:50,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:32:50,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:32:50,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:32:50,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 05:32:50,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:32:50,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:32:50,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:32:50,923 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:32:50,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:32:50,924 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:32:50,924 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:32:50,924 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:32:50,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:32:50,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:32:50,926 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:32:50,926 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:32:50,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:32:50,927 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:32:50,927 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:32:50,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:32:50,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:32:50,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:32:50,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:32:50,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:32:50,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:32:50,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:32:50,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:32:50,930 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:32:50,930 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:32:50,930 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:32:50,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:32:50,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:32:50,932 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:32:50,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:32:50,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:32:50,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:32:50,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:32:50,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:32:50,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:32:50,934 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:32:50,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:32:50,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:32:50,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:32:50,935 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_510846fa-9362-4abf-bc0a-2955be2c928c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2021-11-03 05:32:51,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:32:51,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:32:51,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:32:51,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:32:51,219 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:32:51,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2021-11-03 05:32:51,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data/52aa70898/a1c267a556be4b8fab15a19c556c3008/FLAG99030a0c5 [2021-11-03 05:32:51,892 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:32:51,893 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2021-11-03 05:32:51,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data/52aa70898/a1c267a556be4b8fab15a19c556c3008/FLAG99030a0c5 [2021-11-03 05:32:52,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data/52aa70898/a1c267a556be4b8fab15a19c556c3008 [2021-11-03 05:32:52,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:32:52,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:32:52,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:32:52,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:32:52,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:32:52,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:32:52" (1/1) ... [2021-11-03 05:32:52,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df1d58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:52, skipping insertion in model container [2021-11-03 05:32:52,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:32:52" (1/1) ... [2021-11-03 05:32:52,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:32:52,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:32:52,667 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_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2021-11-03 05:32:52,813 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_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2021-11-03 05:32:52,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:32:52,861 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 05:32:52,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d77ff26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:52, skipping insertion in model container [2021-11-03 05:32:52,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:32:52,862 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:32:52,864 INFO L168 Benchmark]: Toolchain (without parser) took 740.65 ms. Allocated memory is still 104.9 MB. Free memory was 71.9 MB in the beginning and 65.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:32:52,865 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 59.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:32:52,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.15 ms. Allocated memory is still 104.9 MB. Free memory was 71.6 MB in the beginning and 65.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:32:52,868 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 104.9 MB. Free memory is still 59.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 738.15 ms. Allocated memory is still 104.9 MB. Free memory was 71.6 MB in the beginning and 65.8 MB in the end (delta: 5.9 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: 737]: 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_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/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_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/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_510846fa-9362-4abf-bc0a-2955be2c928c/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 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:32:55,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:32:55,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:32:55,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:32:55,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:32:55,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:32:55,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:32:55,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:32:55,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:32:55,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:32:55,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:32:55,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:32:55,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:32:55,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:32:55,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:32:55,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:32:55,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:32:55,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:32:55,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:32:55,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:32:55,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:32:55,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:32:55,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:32:55,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:32:55,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:32:55,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:32:55,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:32:55,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:32:55,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:32:55,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:32:55,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:32:55,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:32:55,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:32:55,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:32:55,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:32:55,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:32:55,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:32:55,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:32:55,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:32:55,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:32:55,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:32:55,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 05:32:55,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:32:55,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:32:55,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:32:55,178 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:32:55,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:32:55,179 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:32:55,179 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:32:55,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:32:55,179 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:32:55,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:32:55,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:32:55,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:32:55,182 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:32:55,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:32:55,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:32:55,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:32:55,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:32:55,183 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:32:55,183 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:32:55,184 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:32:55,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:32:55,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:32:55,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:32:55,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:32:55,185 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:32:55,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:32:55,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:32:55,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:32:55,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:32:55,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:32:55,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:32:55,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:32:55,187 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:32:55,187 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:32:55,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:32:55,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:32:55,188 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_510846fa-9362-4abf-bc0a-2955be2c928c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2021-11-03 05:32:55,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:32:55,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:32:55,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:32:55,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:32:55,549 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:32:55,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2021-11-03 05:32:55,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data/b84ca0c37/622a09ab78f04d32a2b2e382574cc45e/FLAG4794ff66e [2021-11-03 05:32:56,282 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:32:56,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2021-11-03 05:32:56,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data/b84ca0c37/622a09ab78f04d32a2b2e382574cc45e/FLAG4794ff66e [2021-11-03 05:32:56,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/data/b84ca0c37/622a09ab78f04d32a2b2e382574cc45e [2021-11-03 05:32:56,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:32:56,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:32:56,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:32:56,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:32:56,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:32:56,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:32:56" (1/1) ... [2021-11-03 05:32:56,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd4e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:56, skipping insertion in model container [2021-11-03 05:32:56,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:32:56" (1/1) ... [2021-11-03 05:32:56,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:32:56,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:32:57,071 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_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2021-11-03 05:32:57,286 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_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2021-11-03 05:32:57,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:32:57,340 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:32:57,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:32:57,409 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_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2021-11-03 05:32:57,547 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_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2021-11-03 05:32:57,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:32:57,578 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:32:57,612 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_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2021-11-03 05:32:57,710 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_510846fa-9362-4abf-bc0a-2955be2c928c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2021-11-03 05:32:57,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:32:57,801 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:32:57,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57 WrapperNode [2021-11-03 05:32:57,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:32:57,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:32:57,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:32:57,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:32:57,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:57,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:57,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:32:57,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:32:57,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:32:57,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:32:57,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:57,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:58,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:58,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:58,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:58,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:58,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:58,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:32:58,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:32:58,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:32:58,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:32:58,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (1/1) ... [2021-11-03 05:32:58,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:32:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:32:58,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:32:58,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:32:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:32:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:32:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:32:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:32:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:32:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:32:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:32:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:32:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:32:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:32:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:33:05,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:33:05,984 INFO L299 CfgBuilder]: Removed 128 assume(true) statements. [2021-11-03 05:33:05,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:33:05 BoogieIcfgContainer [2021-11-03 05:33:05,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:33:05,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:33:05,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:33:05,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:33:05,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:32:56" (1/3) ... [2021-11-03 05:33:05,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b54a88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:33:05, skipping insertion in model container [2021-11-03 05:33:05,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:57" (2/3) ... [2021-11-03 05:33:05,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b54a88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:33:05, skipping insertion in model container [2021-11-03 05:33:05,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:33:05" (3/3) ... [2021-11-03 05:33:06,001 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-3.i [2021-11-03 05:33:06,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:33:06,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 936 error locations. [2021-11-03 05:33:06,065 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:33:06,077 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:33:06,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 936 error locations. [2021-11-03 05:33:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 1850 states, 913 states have (on average 2.2573932092004383) internal successors, (2061), 1849 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:06,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:33:06,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:06,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:33:06,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:06,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 05:33:06,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:06,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544047924] [2021-11-03 05:33:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:06,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:06,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:06,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:06,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:33:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:06,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:33:06,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:06,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:06,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:06,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544047924] [2021-11-03 05:33:06,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544047924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:06,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:06,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:33:06,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790106487] [2021-11-03 05:33:06,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:33:06,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:33:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:33:06,546 INFO L87 Difference]: Start difference. First operand has 1850 states, 913 states have (on average 2.2573932092004383) internal successors, (2061), 1849 states have internal predecessors, (2061), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:06,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:06,678 INFO L93 Difference]: Finished difference Result 1832 states and 1930 transitions. [2021-11-03 05:33:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:33:06,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:33:06,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:06,713 INFO L225 Difference]: With dead ends: 1832 [2021-11-03 05:33:06,713 INFO L226 Difference]: Without dead ends: 1830 [2021-11-03 05:33:06,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:33:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-11-03 05:33:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1830. [2021-11-03 05:33:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 904 states have (on average 2.1327433628318584) internal successors, (1928), 1829 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 1928 transitions. [2021-11-03 05:33:06,853 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 1928 transitions. Word has length 5 [2021-11-03 05:33:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:06,853 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 1928 transitions. [2021-11-03 05:33:06,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 1928 transitions. [2021-11-03 05:33:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:33:06,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:06,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:33:06,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:07,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:07,067 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 05:33:07,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:07,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927844682] [2021-11-03 05:33:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:07,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:07,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:07,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:07,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:33:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:07,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:33:07,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:07,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:33:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:07,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:07,395 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:07,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927844682] [2021-11-03 05:33:07,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927844682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:07,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:07,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:33:07,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132365612] [2021-11-03 05:33:07,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:33:07,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:33:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:33:07,399 INFO L87 Difference]: Start difference. First operand 1830 states and 1928 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:10,970 INFO L93 Difference]: Finished difference Result 2096 states and 2232 transitions. [2021-11-03 05:33:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:33:10,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:33:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:10,985 INFO L225 Difference]: With dead ends: 2096 [2021-11-03 05:33:10,986 INFO L226 Difference]: Without dead ends: 2096 [2021-11-03 05:33:10,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:33:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2021-11-03 05:33:11,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 1815. [2021-11-03 05:33:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 980 states have (on average 2.012244897959184) internal successors, (1972), 1814 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 1972 transitions. [2021-11-03 05:33:11,037 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 1972 transitions. Word has length 5 [2021-11-03 05:33:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:11,037 INFO L470 AbstractCegarLoop]: Abstraction has 1815 states and 1972 transitions. [2021-11-03 05:33:11,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 1972 transitions. [2021-11-03 05:33:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:33:11,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:11,038 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:33:11,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:11,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:11,249 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 05:33:11,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:11,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219946578] [2021-11-03 05:33:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:11,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:11,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:11,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:11,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:33:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:11,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:33:11,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:11,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:33:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:11,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:11,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:11,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219946578] [2021-11-03 05:33:11,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219946578] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:11,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:11,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 05:33:11,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344418142] [2021-11-03 05:33:11,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:33:11,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:33:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:33:11,543 INFO L87 Difference]: Start difference. First operand 1815 states and 1972 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:19,777 INFO L93 Difference]: Finished difference Result 2399 states and 2602 transitions. [2021-11-03 05:33:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:33:19,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:33:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:19,790 INFO L225 Difference]: With dead ends: 2399 [2021-11-03 05:33:19,790 INFO L226 Difference]: Without dead ends: 2399 [2021-11-03 05:33:19,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:33:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-11-03 05:33:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 1971. [2021-11-03 05:33:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1146 states have (on average 1.987783595113438) internal successors, (2278), 1970 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2278 transitions. [2021-11-03 05:33:19,836 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2278 transitions. Word has length 5 [2021-11-03 05:33:19,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:19,837 INFO L470 AbstractCegarLoop]: Abstraction has 1971 states and 2278 transitions. [2021-11-03 05:33:19,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2278 transitions. [2021-11-03 05:33:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:33:19,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:19,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:33:19,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:20,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:20,052 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 891404513, now seen corresponding path program 1 times [2021-11-03 05:33:20,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:20,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236841506] [2021-11-03 05:33:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:20,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:20,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:20,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:20,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:33:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:20,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:33:20,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:20,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:20,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:20,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236841506] [2021-11-03 05:33:20,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236841506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:20,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:20,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:33:20,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268600440] [2021-11-03 05:33:20,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:33:20,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:20,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:33:20,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:33:20,246 INFO L87 Difference]: Start difference. First operand 1971 states and 2278 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:20,391 INFO L93 Difference]: Finished difference Result 3561 states and 4155 transitions. [2021-11-03 05:33:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:33:20,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 05:33:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:20,410 INFO L225 Difference]: With dead ends: 3561 [2021-11-03 05:33:20,410 INFO L226 Difference]: Without dead ends: 3561 [2021-11-03 05:33:20,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 05:33:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-11-03 05:33:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2934. [2021-11-03 05:33:20,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2109 states have (on average 1.9672830725462305) internal successors, (4149), 2933 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4149 transitions. [2021-11-03 05:33:20,485 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4149 transitions. Word has length 6 [2021-11-03 05:33:20,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:20,485 INFO L470 AbstractCegarLoop]: Abstraction has 2934 states and 4149 transitions. [2021-11-03 05:33:20,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:20,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4149 transitions. [2021-11-03 05:33:20,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:33:20,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:20,487 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:33:20,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:20,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:20,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 05:33:20,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:20,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26588210] [2021-11-03 05:33:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:20,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:20,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:20,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:20,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:33:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:20,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:33:20,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:20,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:21,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:21,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26588210] [2021-11-03 05:33:21,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26588210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:21,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:21,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:33:21,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525737614] [2021-11-03 05:33:21,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:33:21,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:33:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:33:21,007 INFO L87 Difference]: Start difference. First operand 2934 states and 4149 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 05:33:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:21,051 INFO L93 Difference]: Finished difference Result 2874 states and 4063 transitions. [2021-11-03 05:33:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:33:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 11 [2021-11-03 05:33:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:21,067 INFO L225 Difference]: With dead ends: 2874 [2021-11-03 05:33:21,067 INFO L226 Difference]: Without dead ends: 2874 [2021-11-03 05:33:21,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 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 05:33:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2021-11-03 05:33:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2874. [2021-11-03 05:33:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2073 states have (on average 1.9599614085865895) internal successors, (4063), 2873 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 4063 transitions. [2021-11-03 05:33:21,136 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 4063 transitions. Word has length 11 [2021-11-03 05:33:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:21,137 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 4063 transitions. [2021-11-03 05:33:21,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 05:33:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 4063 transitions. [2021-11-03 05:33:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:33:21,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:21,143 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:33:21,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 05:33:21,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:21,357 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:21,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:21,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 05:33:21,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:21,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082082972] [2021-11-03 05:33:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:21,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:21,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:21,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:33:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:21,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:33:21,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:21,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:21,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:21,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082082972] [2021-11-03 05:33:21,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082082972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:21,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:21,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:33:21,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15395176] [2021-11-03 05:33:21,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:33:21,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:33:21,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:33:21,649 INFO L87 Difference]: Start difference. First operand 2874 states and 4063 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:21,750 INFO L93 Difference]: Finished difference Result 2846 states and 4007 transitions. [2021-11-03 05:33:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:33:21,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 13 [2021-11-03 05:33:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:21,765 INFO L225 Difference]: With dead ends: 2846 [2021-11-03 05:33:21,766 INFO L226 Difference]: Without dead ends: 2846 [2021-11-03 05:33:21,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 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 05:33:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-11-03 05:33:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2844. [2021-11-03 05:33:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2057 states have (on average 1.9470102090422945) internal successors, (4005), 2843 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4005 transitions. [2021-11-03 05:33:21,849 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4005 transitions. Word has length 13 [2021-11-03 05:33:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:21,850 INFO L470 AbstractCegarLoop]: Abstraction has 2844 states and 4005 transitions. [2021-11-03 05:33:21,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4005 transitions. [2021-11-03 05:33:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:33:21,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:21,851 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] [2021-11-03 05:33:21,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:22,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:22,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 05:33:22,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:22,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450384302] [2021-11-03 05:33:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:22,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:22,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:22,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:33:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:22,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:33:22,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:22,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:33:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:22,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:22,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:22,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450384302] [2021-11-03 05:33:22,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450384302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:22,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:22,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:33:22,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307021791] [2021-11-03 05:33:22,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:33:22,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:22,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:33:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:33:22,474 INFO L87 Difference]: Start difference. First operand 2844 states and 4005 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:26,644 INFO L93 Difference]: Finished difference Result 4540 states and 6165 transitions. [2021-11-03 05:33:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:33:26,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-03 05:33:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:26,670 INFO L225 Difference]: With dead ends: 4540 [2021-11-03 05:33:26,671 INFO L226 Difference]: Without dead ends: 4540 [2021-11-03 05:33:26,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 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 05:33:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2021-11-03 05:33:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 2840. [2021-11-03 05:33:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2057 states have (on average 1.9431210500729217) internal successors, (3997), 2839 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 3997 transitions. [2021-11-03 05:33:26,752 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 3997 transitions. Word has length 27 [2021-11-03 05:33:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:26,753 INFO L470 AbstractCegarLoop]: Abstraction has 2840 states and 3997 transitions. [2021-11-03 05:33:26,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 3997 transitions. [2021-11-03 05:33:26,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:33:26,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:26,756 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] [2021-11-03 05:33:26,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:26,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:26,974 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:26,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 05:33:26,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:26,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903358626] [2021-11-03 05:33:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:26,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:26,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:27,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:33:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:27,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:33:27,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:27,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:33:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:27,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:27,903 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 05:33:27,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:27,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903358626] [2021-11-03 05:33:27,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903358626] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:27,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:27,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:33:27,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447906518] [2021-11-03 05:33:27,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:33:27,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:33:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:33:27,905 INFO L87 Difference]: Start difference. First operand 2840 states and 3997 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:38,030 INFO L93 Difference]: Finished difference Result 3820 states and 5031 transitions. [2021-11-03 05:33:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:33:38,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 27 [2021-11-03 05:33:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:38,048 INFO L225 Difference]: With dead ends: 3820 [2021-11-03 05:33:38,048 INFO L226 Difference]: Without dead ends: 3820 [2021-11-03 05:33:38,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 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 05:33:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2021-11-03 05:33:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 2836. [2021-11-03 05:33:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2057 states have (on average 1.9392318911035489) internal successors, (3989), 2835 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:38,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 3989 transitions. [2021-11-03 05:33:38,106 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 3989 transitions. Word has length 27 [2021-11-03 05:33:38,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:38,107 INFO L470 AbstractCegarLoop]: Abstraction has 2836 states and 3989 transitions. [2021-11-03 05:33:38,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 3989 transitions. [2021-11-03 05:33:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:33:38,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:38,109 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] [2021-11-03 05:33:38,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:38,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:38,323 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:38,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:38,323 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 05:33:38,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:38,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119024016] [2021-11-03 05:33:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:38,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:38,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:38,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:38,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:33:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:38,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:33:38,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:38,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:38,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:38,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119024016] [2021-11-03 05:33:38,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119024016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:38,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:38,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:33:38,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917047601] [2021-11-03 05:33:38,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:33:38,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:38,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:33:38,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:33:38,877 INFO L87 Difference]: Start difference. First operand 2836 states and 3989 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:38,944 INFO L93 Difference]: Finished difference Result 2824 states and 3969 transitions. [2021-11-03 05:33:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:33:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-03 05:33:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:38,956 INFO L225 Difference]: With dead ends: 2824 [2021-11-03 05:33:38,956 INFO L226 Difference]: Without dead ends: 2824 [2021-11-03 05:33:38,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 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 05:33:38,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-11-03 05:33:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2824. [2021-11-03 05:33:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2045 states have (on average 1.9408312958435208) internal successors, (3969), 2823 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 3969 transitions. [2021-11-03 05:33:39,007 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 3969 transitions. Word has length 42 [2021-11-03 05:33:39,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:39,008 INFO L470 AbstractCegarLoop]: Abstraction has 2824 states and 3969 transitions. [2021-11-03 05:33:39,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:39,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 3969 transitions. [2021-11-03 05:33:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:33:39,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:39,010 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] [2021-11-03 05:33:39,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:39,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:39,223 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 05:33:39,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:39,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034183984] [2021-11-03 05:33:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:39,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:39,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:39,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:39,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:33:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:39,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:33:39,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:39,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:40,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:40,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034183984] [2021-11-03 05:33:40,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034183984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:40,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:40,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:33:40,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546363673] [2021-11-03 05:33:40,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:33:40,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:40,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:33:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:33:40,296 INFO L87 Difference]: Start difference. First operand 2824 states and 3969 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:40,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:40,517 INFO L93 Difference]: Finished difference Result 3013 states and 4004 transitions. [2021-11-03 05:33:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:33:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-03 05:33:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:40,536 INFO L225 Difference]: With dead ends: 3013 [2021-11-03 05:33:40,536 INFO L226 Difference]: Without dead ends: 3013 [2021-11-03 05:33:40,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 05:33:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2021-11-03 05:33:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 2640. [2021-11-03 05:33:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 1861 states have (on average 1.9419666845781838) internal successors, (3614), 2639 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:40,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3614 transitions. [2021-11-03 05:33:40,611 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3614 transitions. Word has length 50 [2021-11-03 05:33:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:40,611 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 3614 transitions. [2021-11-03 05:33:40,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:33:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3614 transitions. [2021-11-03 05:33:40,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 05:33:40,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:40,618 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] [2021-11-03 05:33:40,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:40,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:40,829 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:33:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 05:33:40,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:40,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888151656] [2021-11-03 05:33:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:33:40,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:40,831 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:40,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:33:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:33:41,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:33:41,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:41,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:33:41,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:33:42,015 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 05:33:42,016 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 05:33:42,026 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:33:42,026 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 05:33:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:42,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:46,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:46,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888151656] [2021-11-03 05:33:46,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888151656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:33:46,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:33:46,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:33:46,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117794610] [2021-11-03 05:33:46,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:33:46,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:33:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:33:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 05:33:46,841 INFO L87 Difference]: Start difference. First operand 2640 states and 3614 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:11,276 INFO L93 Difference]: Finished difference Result 4374 states and 5903 transitions. [2021-11-03 05:34:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:34:11,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 53 [2021-11-03 05:34:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:11,283 INFO L225 Difference]: With dead ends: 4374 [2021-11-03 05:34:11,283 INFO L226 Difference]: Without dead ends: 4374 [2021-11-03 05:34:11,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 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 05:34:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2021-11-03 05:34:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 2798. [2021-11-03 05:34:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2057 states have (on average 1.8959649975692756) internal successors, (3900), 2797 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3900 transitions. [2021-11-03 05:34:11,330 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3900 transitions. Word has length 53 [2021-11-03 05:34:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:34:11,330 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 3900 transitions. [2021-11-03 05:34:11,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3900 transitions. [2021-11-03 05:34:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:34:11,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:11,332 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] [2021-11-03 05:34:11,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:34:11,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:34:11,562 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:34:11,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 05:34:11,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:11,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606892894] [2021-11-03 05:34:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:11,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:11,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:11,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:11,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:34:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:12,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:34:12,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:12,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:34:12,205 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 21 treesize of output 17 [2021-11-03 05:34:12,253 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 23 treesize of output 11 [2021-11-03 05:34:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:12,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:12,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:12,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606892894] [2021-11-03 05:34:12,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606892894] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:34:12,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:34:12,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:34:12,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96727516] [2021-11-03 05:34:12,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:34:12,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:34:12,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:34:12,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:34:12,427 INFO L87 Difference]: Start difference. First operand 2798 states and 3900 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:21,524 INFO L93 Difference]: Finished difference Result 4082 states and 5468 transitions. [2021-11-03 05:34:21,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:34:21,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2021-11-03 05:34:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:21,533 INFO L225 Difference]: With dead ends: 4082 [2021-11-03 05:34:21,533 INFO L226 Difference]: Without dead ends: 4082 [2021-11-03 05:34:21,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:34:21,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-03 05:34:21,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2797. [2021-11-03 05:34:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2057 states have (on average 1.8949927078269324) internal successors, (3898), 2796 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3898 transitions. [2021-11-03 05:34:21,601 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3898 transitions. Word has length 59 [2021-11-03 05:34:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:34:21,601 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3898 transitions. [2021-11-03 05:34:21,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3898 transitions. [2021-11-03 05:34:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 05:34:21,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:21,602 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 05:34:21,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:34:21,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:34:21,816 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:34:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 05:34:21,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:21,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538320675] [2021-11-03 05:34:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:21,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:21,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:21,818 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:21,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:34:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:22,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:34:22,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:22,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:34:22,441 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 05:34:22,450 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 05:34:22,514 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 05:34:22,518 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 05:34:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:22,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:23,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:23,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538320675] [2021-11-03 05:34:23,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538320675] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:34:23,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:34:23,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 05:34:23,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916871267] [2021-11-03 05:34:23,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:34:23,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:34:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:34:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:34:23,025 INFO L87 Difference]: Start difference. First operand 2797 states and 3898 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:57,158 INFO L93 Difference]: Finished difference Result 3854 states and 5137 transitions. [2021-11-03 05:34:57,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:34:57,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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 05:34:57,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:57,166 INFO L225 Difference]: With dead ends: 3854 [2021-11-03 05:34:57,166 INFO L226 Difference]: Without dead ends: 3854 [2021-11-03 05:34:57,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:34:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-11-03 05:34:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 2796. [2021-11-03 05:34:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2796 states, 2057 states have (on average 1.8940204180845892) internal successors, (3896), 2795 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 3896 transitions. [2021-11-03 05:34:57,228 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 3896 transitions. Word has length 60 [2021-11-03 05:34:57,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:34:57,228 INFO L470 AbstractCegarLoop]: Abstraction has 2796 states and 3896 transitions. [2021-11-03 05:34:57,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 3896 transitions. [2021-11-03 05:34:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:34:57,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:57,231 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] [2021-11-03 05:34:57,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:34:57,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:34:57,445 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:34:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 05:34:57,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:57,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799551205] [2021-11-03 05:34:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:57,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:57,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:57,447 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:57,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:34:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:57,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:34:57,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:58,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:58,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:58,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799551205] [2021-11-03 05:34:58,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799551205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:34:58,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:34:58,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:34:58,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432694378] [2021-11-03 05:34:58,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:34:58,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:34:58,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:34:58,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:34:58,234 INFO L87 Difference]: Start difference. First operand 2796 states and 3896 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:34:58,563 INFO L93 Difference]: Finished difference Result 4108 states and 5487 transitions. [2021-11-03 05:34:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:34:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 64 [2021-11-03 05:34:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:34:58,572 INFO L225 Difference]: With dead ends: 4108 [2021-11-03 05:34:58,573 INFO L226 Difference]: Without dead ends: 4108 [2021-11-03 05:34:58,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 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 05:34:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-11-03 05:34:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 2814. [2021-11-03 05:34:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2075 states have (on average 1.8862650602409639) internal successors, (3914), 2813 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3914 transitions. [2021-11-03 05:34:58,632 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3914 transitions. Word has length 64 [2021-11-03 05:34:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:34:58,632 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 3914 transitions. [2021-11-03 05:34:58,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:34:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3914 transitions. [2021-11-03 05:34:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 05:34:58,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:34:58,633 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] [2021-11-03 05:34:58,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:34:58,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:34:58,856 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:34:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:34:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 05:34:58,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:34:58,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322010176] [2021-11-03 05:34:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:58,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:34:58,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:34:58,858 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:34:58,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:34:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:34:59,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:34:59,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:34:59,584 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 05:34:59,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:59,819 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 05:34:59,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:34:59,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322010176] [2021-11-03 05:34:59,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322010176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:34:59,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1308134268] [2021-11-03 05:34:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:34:59,820 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:34:59,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:34:59,823 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:34:59,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:35:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:00,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:35:00,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:00,743 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 05:35:00,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:00,859 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 05:35:00,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1308134268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:35:00,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235519412] [2021-11-03 05:35:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:00,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:35:00,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:35:00,861 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:35:00,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 05:35:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:01,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:35:01,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:01,670 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 05:35:01,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:01,780 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 05:35:01,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235519412] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:35:01,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:35:01,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 05:35:01,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387459160] [2021-11-03 05:35:01,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:35:01,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:35:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:35:01,782 INFO L87 Difference]: Start difference. First operand 2814 states and 3914 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:35:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:02,483 INFO L93 Difference]: Finished difference Result 4144 states and 5523 transitions. [2021-11-03 05:35:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:35:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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 05:35:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:02,490 INFO L225 Difference]: With dead ends: 4144 [2021-11-03 05:35:02,491 INFO L226 Difference]: Without dead ends: 4144 [2021-11-03 05:35:02,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 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 05:35:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2021-11-03 05:35:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 2850. [2021-11-03 05:35:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2111 states have (on average 1.871151113216485) internal successors, (3950), 2849 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:35:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3950 transitions. [2021-11-03 05:35:02,552 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3950 transitions. Word has length 66 [2021-11-03 05:35:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:02,553 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 3950 transitions. [2021-11-03 05:35:02,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:35:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3950 transitions. [2021-11-03 05:35:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 05:35:02,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:02,554 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] [2021-11-03 05:35:02,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:02,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:02,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 05:35:03,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:03,171 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:35:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 05:35:03,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:03,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152256800] [2021-11-03 05:35:03,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:35:03,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:03,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:03,174 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:03,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 05:35:03,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:35:03,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:35:03,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:35:03,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:04,340 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 05:35:04,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:04,796 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 05:35:04,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:04,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152256800] [2021-11-03 05:35:04,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152256800] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:35:04,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1359380277] [2021-11-03 05:35:04,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:35:04,798 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:35:04,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:35:04,807 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:35:04,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 05:35:06,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:35:06,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:35:06,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:35:06,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:06,655 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 05:35:06,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:06,815 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 05:35:06,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1359380277] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:35:06,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961655898] [2021-11-03 05:35:06,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:35:06,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:35:06,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:35:06,820 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:35:06,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 05:35:21,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:35:21,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:35:21,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:35:21,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:21,794 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 05:35:21,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:21,955 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 05:35:21,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961655898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:35:21,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:35:21,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-03 05:35:21,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664773057] [2021-11-03 05:35:21,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:35:21,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:35:21,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:35:21,957 INFO L87 Difference]: Start difference. First operand 2850 states and 3950 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:35:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:25,470 INFO L93 Difference]: Finished difference Result 4216 states and 5595 transitions. [2021-11-03 05:35:25,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 05:35:25,471 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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 70 [2021-11-03 05:35:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:25,478 INFO L225 Difference]: With dead ends: 4216 [2021-11-03 05:35:25,478 INFO L226 Difference]: Without dead ends: 4216 [2021-11-03 05:35:25,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=370, Invalid=622, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:35:25,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2021-11-03 05:35:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 2922. [2021-11-03 05:35:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2183 states have (on average 1.842418689876317) internal successors, (4022), 2921 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:35:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 4022 transitions. [2021-11-03 05:35:25,544 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 4022 transitions. Word has length 70 [2021-11-03 05:35:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:25,544 INFO L470 AbstractCegarLoop]: Abstraction has 2922 states and 4022 transitions. [2021-11-03 05:35:25,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:35:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 4022 transitions. [2021-11-03 05:35:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 05:35:25,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:25,545 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] [2021-11-03 05:35:25,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:25,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:25,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-03 05:35:26,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:35:26,161 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 932 more)] === [2021-11-03 05:35:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996130, now seen corresponding path program 3 times [2021-11-03 05:35:26,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:26,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187312600] [2021-11-03 05:35:26,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:35:26,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:26,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:26,163 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:26,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 05:35:27,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 05:35:27,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:35:27,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:35:27,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:28,045 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 05:35:28,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:29,362 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 05:35:29,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:29,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187312600] [2021-11-03 05:35:29,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187312600] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:35:29,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [521604667] [2021-11-03 05:35:29,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:35:29,363 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:35:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:35:29,368 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:35:29,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 05:35:36,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 05:35:36,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:35:36,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:35:36,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:37,098 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 05:35:37,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:37,273 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 05:35:37,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [521604667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:35:37,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79823026] [2021-11-03 05:35:37,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:35:37,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:35:37,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:35:37,275 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:35:37,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510846fa-9362-4abf-bc0a-2955be2c928c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process