./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8 --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 f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:51,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:51,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:51,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:51,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:51,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:51,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:51,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:51,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:51,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:51,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:51,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:51,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:51,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:51,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:51,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:51,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:51,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:51,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:51,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:51,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:51,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:51,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:51,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:51,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:51,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:51,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:51,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:51,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:51,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:51,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:51,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:51,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:51,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:51,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:51,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:51,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:51,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:51,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:51,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:51,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:51,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:36:51,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:51,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:51,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:51,825 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:51,825 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:51,832 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:51,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:36:51,832 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:51,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:51,833 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:36:51,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:36:51,834 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:51,834 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:36:51,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:36:51,835 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:36:51,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:36:51,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:36:51,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:51,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:51,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:36:51,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:51,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:51,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:51,837 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:36:51,838 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:36:51,838 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:36:51,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:51,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:51,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:51,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:51,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:51,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:51,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:51,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:51,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:51,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:36:51,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:36:51,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:51,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:51,843 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_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 [2021-11-07 01:36:52,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:52,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:52,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:52,168 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:52,170 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:52,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2021-11-07 01:36:52,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data/57c4b0ec0/096e04076acc473aa2cf2a7120b4b17a/FLAGd84209232 [2021-11-07 01:36:52,930 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:52,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2021-11-07 01:36:52,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data/57c4b0ec0/096e04076acc473aa2cf2a7120b4b17a/FLAGd84209232 [2021-11-07 01:36:53,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data/57c4b0ec0/096e04076acc473aa2cf2a7120b4b17a [2021-11-07 01:36:53,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:53,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:53,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:53,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:53,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:53,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:53,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8c8320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53, skipping insertion in model container [2021-11-07 01:36:53,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:53,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:53,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:53,661 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_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2021-11-07 01:36:53,749 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_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2021-11-07 01:36:53,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:53,769 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) [2021-11-07 01:36:53,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12765cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53, skipping insertion in model container [2021-11-07 01:36:53,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:53,776 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:36:53,779 INFO L168 Benchmark]: Toolchain (without parser) took 647.29 ms. Allocated memory is still 117.4 MB. Free memory was 73.1 MB in the beginning and 83.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:53,780 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 117.4 MB. Free memory was 92.1 MB in the beginning and 92.0 MB in the end (delta: 66.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:36:53,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.23 ms. Allocated memory is still 117.4 MB. Free memory was 73.0 MB in the beginning and 83.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:53,784 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 117.4 MB. Free memory was 92.1 MB in the beginning and 92.0 MB in the end (delta: 66.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 644.23 ms. Allocated memory is still 117.4 MB. Free memory was 73.0 MB in the beginning and 83.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8 --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 f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:56,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:56,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:56,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:56,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:56,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:56,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:56,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:56,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:56,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:56,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:56,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:56,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:56,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:56,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:56,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:56,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:56,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:56,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:56,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:56,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:56,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:56,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:56,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:56,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:56,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:56,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:56,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:56,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:56,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:56,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:56,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:56,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:56,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:56,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:56,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:56,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:56,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:56,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:56,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:56,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:56,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:36:56,253 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:56,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:56,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:56,255 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:56,255 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:56,255 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:56,256 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:56,256 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:56,256 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:56,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:36:56,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:36:56,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:56,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:56,258 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:36:56,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:56,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:56,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:56,259 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:36:56,259 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:36:56,260 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:36:56,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:56,260 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:56,260 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:36:56,261 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:36:56,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:56,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:56,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:56,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:36:56,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:56,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:56,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:56,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:56,263 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:36:56,263 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:56,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:56,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:56,264 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_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 [2021-11-07 01:36:56,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:56,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:56,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:56,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:56,646 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:56,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2021-11-07 01:36:56,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data/daac71048/3dc1cd8e16174702a4921825924e4268/FLAGefb6269f0 [2021-11-07 01:36:57,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:57,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2021-11-07 01:36:57,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data/daac71048/3dc1cd8e16174702a4921825924e4268/FLAGefb6269f0 [2021-11-07 01:36:57,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/data/daac71048/3dc1cd8e16174702a4921825924e4268 [2021-11-07 01:36:57,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:57,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:57,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:57,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:57,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:57,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:57" (1/1) ... [2021-11-07 01:36:57,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebc669d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:57, skipping insertion in model container [2021-11-07 01:36:57,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:57" (1/1) ... [2021-11-07 01:36:57,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:57,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:58,178 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_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2021-11-07 01:36:58,363 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_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2021-11-07 01:36:58,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:58,391 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:36:58,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:58,469 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_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2021-11-07 01:36:58,524 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_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2021-11-07 01:36:58,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:58,534 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:36:58,559 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_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2021-11-07 01:36:58,621 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_eed85457-2157-46fb-bf70-1cba242fde3a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2021-11-07 01:36:58,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:58,686 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:36:58,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58 WrapperNode [2021-11-07 01:36:58,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:58,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:58,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:36:58,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:36:58,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:58,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:36:58,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:36:58,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:36:58,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:36:58,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:36:58,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:36:58,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:36:58,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (1/1) ... [2021-11-07 01:36:58,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:58,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:36:58,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:36:59,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:36:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:36:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:36:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:36:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:36:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:36:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:36:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:36:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:36:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:36:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:36:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:36:59,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:37:03,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:37:03,355 INFO L299 CfgBuilder]: Removed 76 assume(true) statements. [2021-11-07 01:37:03,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:03 BoogieIcfgContainer [2021-11-07 01:37:03,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:37:03,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:37:03,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:37:03,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:37:03,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:36:57" (1/3) ... [2021-11-07 01:37:03,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178564c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:03, skipping insertion in model container [2021-11-07 01:37:03,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:58" (2/3) ... [2021-11-07 01:37:03,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178564c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:03, skipping insertion in model container [2021-11-07 01:37:03,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:03" (3/3) ... [2021-11-07 01:37:03,372 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-1.i [2021-11-07 01:37:03,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:37:03,378 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2021-11-07 01:37:03,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:37:03,425 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 [2021-11-07 01:37:03,425 INFO L340 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2021-11-07 01:37:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 890 states, 454 states have (on average 2.2158590308370045) internal successors, (1006), 889 states have internal predecessors, (1006), 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) [2021-11-07 01:37:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:37:03,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:03,482 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:37:03,483 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:03,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-07 01:37:03,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:03,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204571825] [2021-11-07 01:37:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:03,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:03,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:03,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:03,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:37:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:03,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:03,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:03,728 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 [2021-11-07 01:37:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:03,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:03,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:03,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204571825] [2021-11-07 01:37:03,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204571825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:03,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:03,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:37:03,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047188540] [2021-11-07 01:37:03,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:03,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:03,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:03,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:03,800 INFO L87 Difference]: Start difference. First operand has 890 states, 454 states have (on average 2.2158590308370045) internal successors, (1006), 889 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:05,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:05,443 INFO L93 Difference]: Finished difference Result 877 states and 929 transitions. [2021-11-07 01:37:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:05,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 01:37:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:05,465 INFO L225 Difference]: With dead ends: 877 [2021-11-07 01:37:05,466 INFO L226 Difference]: Without dead ends: 875 [2021-11-07 01:37:05,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-07 01:37:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 874. [2021-11-07 01:37:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 454 states have (on average 2.041850220264317) internal successors, (927), 873 states have internal predecessors, (927), 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) [2021-11-07 01:37:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 927 transitions. [2021-11-07 01:37:05,551 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 927 transitions. Word has length 3 [2021-11-07 01:37:05,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:05,551 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 927 transitions. [2021-11-07 01:37:05,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 927 transitions. [2021-11-07 01:37:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:37:05,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:05,553 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:37:05,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:37:05,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:05,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:05,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-07 01:37:05,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:05,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813044143] [2021-11-07 01:37:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:05,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:05,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:05,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:05,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:37:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:05,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:05,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:05,919 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 [2021-11-07 01:37:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:05,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:05,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:05,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813044143] [2021-11-07 01:37:05,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813044143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:05,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:05,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:37:05,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070711903] [2021-11-07 01:37:06,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:06,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:06,001 INFO L87 Difference]: Start difference. First operand 874 states and 927 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:10,294 INFO L93 Difference]: Finished difference Result 1178 states and 1260 transitions. [2021-11-07 01:37:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:10,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 01:37:10,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:10,302 INFO L225 Difference]: With dead ends: 1178 [2021-11-07 01:37:10,302 INFO L226 Difference]: Without dead ends: 1178 [2021-11-07 01:37:10,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:10,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-11-07 01:37:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 909. [2021-11-07 01:37:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 498 states have (on average 2.0200803212851404) internal successors, (1006), 908 states have internal predecessors, (1006), 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) [2021-11-07 01:37:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1006 transitions. [2021-11-07 01:37:10,339 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1006 transitions. Word has length 3 [2021-11-07 01:37:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:10,340 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1006 transitions. [2021-11-07 01:37:10,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1006 transitions. [2021-11-07 01:37:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:37:10,341 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:10,341 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:10,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:37:10,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:10,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:10,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-07 01:37:10,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:10,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530340007] [2021-11-07 01:37:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:10,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:10,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:10,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:10,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:37:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:10,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:10,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:10,697 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 [2021-11-07 01:37:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:10,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:10,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:10,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530340007] [2021-11-07 01:37:10,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530340007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:10,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:10,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:37:10,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553830375] [2021-11-07 01:37:10,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:10,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:10,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:10,750 INFO L87 Difference]: Start difference. First operand 909 states and 1006 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:12,670 INFO L93 Difference]: Finished difference Result 1096 states and 1215 transitions. [2021-11-07 01:37:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:12,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:37:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:12,679 INFO L225 Difference]: With dead ends: 1096 [2021-11-07 01:37:12,679 INFO L226 Difference]: Without dead ends: 1096 [2021-11-07 01:37:12,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:12,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-07 01:37:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 862. [2021-11-07 01:37:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 498 states have (on average 1.9196787148594376) internal successors, (956), 861 states have internal predecessors, (956), 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) [2021-11-07 01:37:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 956 transitions. [2021-11-07 01:37:12,705 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 956 transitions. Word has length 8 [2021-11-07 01:37:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:12,706 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 956 transitions. [2021-11-07 01:37:12,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 956 transitions. [2021-11-07 01:37:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:37:12,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:12,707 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:12,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:12,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:12,918 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-07 01:37:12,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:12,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127009309] [2021-11-07 01:37:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:12,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:12,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:12,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:12,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:37:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:13,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:13,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:13,080 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 [2021-11-07 01:37:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:13,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:13,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:13,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127009309] [2021-11-07 01:37:13,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127009309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:13,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:13,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:37:13,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867663893] [2021-11-07 01:37:13,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:13,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:13,229 INFO L87 Difference]: Start difference. First operand 862 states and 956 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:16,577 INFO L93 Difference]: Finished difference Result 1128 states and 1210 transitions. [2021-11-07 01:37:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:37:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:16,585 INFO L225 Difference]: With dead ends: 1128 [2021-11-07 01:37:16,585 INFO L226 Difference]: Without dead ends: 1128 [2021-11-07 01:37:16,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-07 01:37:16,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 852. [2021-11-07 01:37:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 498 states have (on average 1.893574297188755) internal successors, (943), 851 states have internal predecessors, (943), 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) [2021-11-07 01:37:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 943 transitions. [2021-11-07 01:37:16,608 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 943 transitions. Word has length 8 [2021-11-07 01:37:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:16,609 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 943 transitions. [2021-11-07 01:37:16,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 943 transitions. [2021-11-07 01:37:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:37:16,610 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:16,610 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:16,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:16,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:16,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr434ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:16,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash 523681018, now seen corresponding path program 1 times [2021-11-07 01:37:16,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:16,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466554847] [2021-11-07 01:37:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:16,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:16,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:16,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:16,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:37:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:16,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:16,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:17,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:17,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:17,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:17,063 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:37:17,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:37:17,136 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:37:17,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:37:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:17,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:17,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:17,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466554847] [2021-11-07 01:37:17,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466554847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:17,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:17,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:37:17,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195976037] [2021-11-07 01:37:17,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:17,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:17,229 INFO L87 Difference]: Start difference. First operand 852 states and 943 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:19,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:19,459 INFO L93 Difference]: Finished difference Result 1079 states and 1194 transitions. [2021-11-07 01:37:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:19,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 01:37:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:19,467 INFO L225 Difference]: With dead ends: 1079 [2021-11-07 01:37:19,467 INFO L226 Difference]: Without dead ends: 1079 [2021-11-07 01:37:19,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-07 01:37:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 852. [2021-11-07 01:37:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 498 states have (on average 1.891566265060241) internal successors, (942), 851 states have internal predecessors, (942), 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) [2021-11-07 01:37:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 942 transitions. [2021-11-07 01:37:19,490 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 942 transitions. Word has length 10 [2021-11-07 01:37:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:19,490 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 942 transitions. [2021-11-07 01:37:19,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 942 transitions. [2021-11-07 01:37:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:37:19,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:19,492 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:19,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:19,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:19,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-07 01:37:19,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:19,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291202014] [2021-11-07 01:37:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:19,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:19,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:19,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:19,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:37:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:19,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:19,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:19,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:19,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:19,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291202014] [2021-11-07 01:37:19,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291202014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:19,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:19,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:19,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184391027] [2021-11-07 01:37:19,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:19,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:19,952 INFO L87 Difference]: Start difference. First operand 852 states and 942 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:19,991 INFO L93 Difference]: Finished difference Result 819 states and 908 transitions. [2021-11-07 01:37:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-07 01:37:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:19,996 INFO L225 Difference]: With dead ends: 819 [2021-11-07 01:37:19,997 INFO L226 Difference]: Without dead ends: 819 [2021-11-07 01:37:19,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-07 01:37:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 810. [2021-11-07 01:37:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 480 states have (on average 1.8729166666666666) internal successors, (899), 809 states have internal predecessors, (899), 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) [2021-11-07 01:37:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 899 transitions. [2021-11-07 01:37:20,015 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 899 transitions. Word has length 18 [2021-11-07 01:37:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:20,015 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 899 transitions. [2021-11-07 01:37:20,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 899 transitions. [2021-11-07 01:37:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:37:20,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:20,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:20,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:20,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:20,234 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:20,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:20,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-07 01:37:20,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:20,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764280405] [2021-11-07 01:37:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:20,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:20,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:20,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:20,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:37:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:20,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:20,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:20,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:20,528 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:20,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764280405] [2021-11-07 01:37:20,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764280405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:20,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:20,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:37:20,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145474742] [2021-11-07 01:37:20,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:20,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:20,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:20,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:20,533 INFO L87 Difference]: Start difference. First operand 810 states and 899 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:20,614 INFO L93 Difference]: Finished difference Result 798 states and 880 transitions. [2021-11-07 01:37:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:20,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-07 01:37:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:20,619 INFO L225 Difference]: With dead ends: 798 [2021-11-07 01:37:20,620 INFO L226 Difference]: Without dead ends: 798 [2021-11-07 01:37:20,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:20,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-11-07 01:37:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 788. [2021-11-07 01:37:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 472 states have (on average 1.8432203389830508) internal successors, (870), 787 states have internal predecessors, (870), 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) [2021-11-07 01:37:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 870 transitions. [2021-11-07 01:37:20,645 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 870 transitions. Word has length 20 [2021-11-07 01:37:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:20,646 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 870 transitions. [2021-11-07 01:37:20,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 870 transitions. [2021-11-07 01:37:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:37:20,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:20,650 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:20,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:20,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:20,862 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-07 01:37:20,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:20,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743073935] [2021-11-07 01:37:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:20,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:20,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:20,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:20,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:37:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:21,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:21,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:21,040 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 [2021-11-07 01:37:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:21,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:21,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:21,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743073935] [2021-11-07 01:37:21,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743073935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:21,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:21,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:37:21,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835260062] [2021-11-07 01:37:21,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:21,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:21,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:21,326 INFO L87 Difference]: Start difference. First operand 788 states and 870 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:23,168 INFO L93 Difference]: Finished difference Result 1030 states and 1137 transitions. [2021-11-07 01:37:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:37:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:23,175 INFO L225 Difference]: With dead ends: 1030 [2021-11-07 01:37:23,175 INFO L226 Difference]: Without dead ends: 1030 [2021-11-07 01:37:23,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:23,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-11-07 01:37:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 784. [2021-11-07 01:37:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 472 states have (on average 1.8347457627118644) internal successors, (866), 783 states have internal predecessors, (866), 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) [2021-11-07 01:37:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 866 transitions. [2021-11-07 01:37:23,194 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 866 transitions. Word has length 34 [2021-11-07 01:37:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:23,194 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 866 transitions. [2021-11-07 01:37:23,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 866 transitions. [2021-11-07 01:37:23,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:37:23,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:23,196 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:23,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:23,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:23,412 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:23,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-07 01:37:23,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:23,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661917665] [2021-11-07 01:37:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:23,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:23,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:23,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:23,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:37:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:23,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:23,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:23,636 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 [2021-11-07 01:37:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:23,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:24,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:24,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661917665] [2021-11-07 01:37:24,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661917665] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:24,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:24,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:37:24,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149300430] [2021-11-07 01:37:24,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:24,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:24,498 INFO L87 Difference]: Start difference. First operand 784 states and 866 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:29,075 INFO L93 Difference]: Finished difference Result 1068 states and 1141 transitions. [2021-11-07 01:37:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:29,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:37:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:29,081 INFO L225 Difference]: With dead ends: 1068 [2021-11-07 01:37:29,082 INFO L226 Difference]: Without dead ends: 1068 [2021-11-07 01:37:29,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:37:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-07 01:37:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 780. [2021-11-07 01:37:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 472 states have (on average 1.826271186440678) internal successors, (862), 779 states have internal predecessors, (862), 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) [2021-11-07 01:37:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 862 transitions. [2021-11-07 01:37:29,100 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 862 transitions. Word has length 34 [2021-11-07 01:37:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:29,100 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 862 transitions. [2021-11-07 01:37:29,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 862 transitions. [2021-11-07 01:37:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:37:29,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:29,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:29,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:29,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:29,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:29,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:29,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1651334985, now seen corresponding path program 1 times [2021-11-07 01:37:29,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:29,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732781549] [2021-11-07 01:37:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:29,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:29,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:29,318 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:29,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:37:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:29,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:29,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:29,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:29,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:29,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732781549] [2021-11-07 01:37:29,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732781549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:29,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:29,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:37:29,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955721302] [2021-11-07 01:37:29,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:29,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:29,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:29,897 INFO L87 Difference]: Start difference. First operand 780 states and 862 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:29,961 INFO L93 Difference]: Finished difference Result 783 states and 861 transitions. [2021-11-07 01:37:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:29,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:37:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:29,966 INFO L225 Difference]: With dead ends: 783 [2021-11-07 01:37:29,967 INFO L226 Difference]: Without dead ends: 783 [2021-11-07 01:37:29,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-07 01:37:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 774. [2021-11-07 01:37:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 466 states have (on average 1.8283261802575108) internal successors, (852), 773 states have internal predecessors, (852), 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) [2021-11-07 01:37:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 852 transitions. [2021-11-07 01:37:29,984 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 852 transitions. Word has length 49 [2021-11-07 01:37:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:29,984 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 852 transitions. [2021-11-07 01:37:29,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 852 transitions. [2021-11-07 01:37:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:37:29,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:29,994 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:30,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:30,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:30,202 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1352588907, now seen corresponding path program 1 times [2021-11-07 01:37:30,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:30,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728685495] [2021-11-07 01:37:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:30,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:30,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:30,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:37:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:30,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:30,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:31,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:31,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:31,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728685495] [2021-11-07 01:37:31,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728685495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:31,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:31,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:37:31,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753188037] [2021-11-07 01:37:31,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:31,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:31,493 INFO L87 Difference]: Start difference. First operand 774 states and 852 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:31,640 INFO L93 Difference]: Finished difference Result 984 states and 1079 transitions. [2021-11-07 01:37:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:31,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 01:37:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:31,646 INFO L225 Difference]: With dead ends: 984 [2021-11-07 01:37:31,646 INFO L226 Difference]: Without dead ends: 984 [2021-11-07 01:37:31,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-11-07 01:37:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 919. [2021-11-07 01:37:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 611 states have (on average 1.7528641571194763) internal successors, (1071), 918 states have internal predecessors, (1071), 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) [2021-11-07 01:37:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1071 transitions. [2021-11-07 01:37:31,667 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1071 transitions. Word has length 57 [2021-11-07 01:37:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:31,668 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1071 transitions. [2021-11-07 01:37:31,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1071 transitions. [2021-11-07 01:37:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:37:31,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:31,672 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] [2021-11-07 01:37:31,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:31,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:31,885 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:31,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:31,886 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-07 01:37:31,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:31,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614653510] [2021-11-07 01:37:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:31,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:31,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:31,889 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:31,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:37:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:32,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:37:32,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:32,454 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 [2021-11-07 01:37:32,461 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 [2021-11-07 01:37:33,267 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:37:33,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:37:33,285 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:37:33,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-07 01:37:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:33,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:40,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:40,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614653510] [2021-11-07 01:37:40,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614653510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:40,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:40,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:37:40,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222271644] [2021-11-07 01:37:40,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:40,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-07 01:37:40,867 INFO L87 Difference]: Start difference. First operand 919 states and 1071 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:53,551 INFO L93 Difference]: Finished difference Result 1213 states and 1463 transitions. [2021-11-07 01:37:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:37:53,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 01:37:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:53,558 INFO L225 Difference]: With dead ends: 1213 [2021-11-07 01:37:53,559 INFO L226 Difference]: Without dead ends: 1213 [2021-11-07 01:37:53,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-07 01:37:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-11-07 01:37:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 881. [2021-11-07 01:37:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 611 states have (on average 1.690671031096563) internal successors, (1033), 880 states have internal predecessors, (1033), 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) [2021-11-07 01:37:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1033 transitions. [2021-11-07 01:37:53,582 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1033 transitions. Word has length 60 [2021-11-07 01:37:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:53,582 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1033 transitions. [2021-11-07 01:37:53,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1033 transitions. [2021-11-07 01:37:53,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:37:53,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:53,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:53,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:53,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:53,802 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:53,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-07 01:37:53,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:53,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591544094] [2021-11-07 01:37:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:53,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:53,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:53,804 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:53,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:37:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:54,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:54,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:54,513 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 [2021-11-07 01:37:54,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-07 01:37:54,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-07 01:37:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:54,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:54,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:54,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591544094] [2021-11-07 01:37:54,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591544094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:54,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:54,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:37:54,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901728597] [2021-11-07 01:37:54,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:54,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:54,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:54,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:54,838 INFO L87 Difference]: Start difference. First operand 881 states and 1033 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:59,408 INFO L93 Difference]: Finished difference Result 1416 states and 1672 transitions. [2021-11-07 01:37:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:37:59,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:37:59,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:59,415 INFO L225 Difference]: With dead ends: 1416 [2021-11-07 01:37:59,415 INFO L226 Difference]: Without dead ends: 1416 [2021-11-07 01:37:59,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:37:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-11-07 01:37:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 880. [2021-11-07 01:37:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 611 states have (on average 1.6890343698854338) internal successors, (1032), 879 states have internal predecessors, (1032), 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) [2021-11-07 01:37:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1032 transitions. [2021-11-07 01:37:59,437 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1032 transitions. Word has length 66 [2021-11-07 01:37:59,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:59,437 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1032 transitions. [2021-11-07 01:37:59,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1032 transitions. [2021-11-07 01:37:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:37:59,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:59,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:59,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:59,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:59,654 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:37:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-07 01:37:59,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:59,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490962860] [2021-11-07 01:37:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:59,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:59,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:59,656 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:59,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:38:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:00,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:38:00,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:00,280 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 [2021-11-07 01:38:00,308 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 [2021-11-07 01:38:00,320 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 [2021-11-07 01:38:00,408 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 [2021-11-07 01:38:00,413 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 [2021-11-07 01:38:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:00,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:01,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:01,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490962860] [2021-11-07 01:38:01,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490962860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:01,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:01,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:38:01,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662520574] [2021-11-07 01:38:01,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:38:01,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:38:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:38:01,028 INFO L87 Difference]: Start difference. First operand 880 states and 1032 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:13,888 INFO L93 Difference]: Finished difference Result 1251 states and 1469 transitions. [2021-11-07 01:38:13,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:38:13,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:38:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:13,893 INFO L225 Difference]: With dead ends: 1251 [2021-11-07 01:38:13,893 INFO L226 Difference]: Without dead ends: 1251 [2021-11-07 01:38:13,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:38:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-11-07 01:38:13,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 879. [2021-11-07 01:38:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 611 states have (on average 1.6873977086743044) internal successors, (1031), 878 states have internal predecessors, (1031), 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) [2021-11-07 01:38:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1031 transitions. [2021-11-07 01:38:13,912 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1031 transitions. Word has length 67 [2021-11-07 01:38:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:13,912 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1031 transitions. [2021-11-07 01:38:13,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1031 transitions. [2021-11-07 01:38:13,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:38:13,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:13,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:13,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:14,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:14,128 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:38:14,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-07 01:38:14,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:14,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294731169] [2021-11-07 01:38:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:14,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:14,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:14,130 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:14,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:38:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:14,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:14,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:14,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:15,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:15,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294731169] [2021-11-07 01:38:15,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294731169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:15,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:15,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:38:15,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012163758] [2021-11-07 01:38:15,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:38:15,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:38:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:38:15,006 INFO L87 Difference]: Start difference. First operand 879 states and 1031 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:15,175 INFO L93 Difference]: Finished difference Result 1608 states and 1872 transitions. [2021-11-07 01:38:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:38:15,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:38:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:15,183 INFO L225 Difference]: With dead ends: 1608 [2021-11-07 01:38:15,183 INFO L226 Difference]: Without dead ends: 1608 [2021-11-07 01:38:15,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:38:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-11-07 01:38:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 882. [2021-11-07 01:38:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 614 states have (on average 1.6840390879478828) internal successors, (1034), 881 states have internal predecessors, (1034), 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) [2021-11-07 01:38:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1034 transitions. [2021-11-07 01:38:15,207 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1034 transitions. Word has length 71 [2021-11-07 01:38:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:15,207 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1034 transitions. [2021-11-07 01:38:15,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1034 transitions. [2021-11-07 01:38:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:38:15,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:15,209 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:15,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:15,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:15,422 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:38:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-07 01:38:15,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:15,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279427523] [2021-11-07 01:38:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:15,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:15,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:15,425 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:15,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:38:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:15,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:15,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:16,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:16,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:16,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279427523] [2021-11-07 01:38:16,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279427523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:16,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [986649415] [2021-11-07 01:38:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:16,484 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:38:16,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:38:16,498 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:38:16,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:38:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:17,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:17,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:17,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:17,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [986649415] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:17,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339894038] [2021-11-07 01:38:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:17,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:38:17,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:38:17,619 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:38:17,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:38:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:18,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:38:18,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:18,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:18,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339894038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:18,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:38:18,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 01:38:18,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193846708] [2021-11-07 01:38:18,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:38:18,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:38:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:38:18,789 INFO L87 Difference]: Start difference. First operand 882 states and 1034 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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) [2021-11-07 01:38:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:19,979 INFO L93 Difference]: Finished difference Result 2350 states and 2726 transitions. [2021-11-07 01:38:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:38:19,980 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:38:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:19,988 INFO L225 Difference]: With dead ends: 2350 [2021-11-07 01:38:19,989 INFO L226 Difference]: Without dead ends: 2350 [2021-11-07 01:38:19,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=364, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:38:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2021-11-07 01:38:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 891. [2021-11-07 01:38:20,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 623 states have (on average 1.6773675762439808) internal successors, (1045), 890 states have internal predecessors, (1045), 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) [2021-11-07 01:38:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1045 transitions. [2021-11-07 01:38:20,011 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1045 transitions. Word has length 73 [2021-11-07 01:38:20,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:20,012 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 1045 transitions. [2021-11-07 01:38:20,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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) [2021-11-07 01:38:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1045 transitions. [2021-11-07 01:38:20,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:38:20,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:20,013 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:20,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:20,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-07 01:38:20,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-07 01:38:20,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:38:20,617 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:38:20,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:20,618 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-07 01:38:20,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:20,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952088058] [2021-11-07 01:38:20,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:38:20,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:20,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:20,620 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:20,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:38:21,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:38:21,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:38:21,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:38:21,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:21,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:22,365 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:22,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952088058] [2021-11-07 01:38:22,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952088058] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:22,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [904904145] [2021-11-07 01:38:22,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:38:22,365 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:38:22,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:38:22,366 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:38:22,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:38:23,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:38:23,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:38:23,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:38:23,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:24,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:24,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [904904145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:24,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661514360] [2021-11-07 01:38:24,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:38:24,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:38:24,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:38:24,350 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:38:24,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 01:38:53,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:38:53,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:38:53,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:38:53,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:53,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:54,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661514360] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:54,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:38:54,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 25 [2021-11-07 01:38:54,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639882815] [2021-11-07 01:38:54,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 01:38:54,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 01:38:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:38:54,738 INFO L87 Difference]: Start difference. First operand 891 states and 1045 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 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) [2021-11-07 01:39:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:00,811 INFO L93 Difference]: Finished difference Result 4343 states and 5046 transitions. [2021-11-07 01:39:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 01:39:00,812 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 01:39:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:00,828 INFO L225 Difference]: With dead ends: 4343 [2021-11-07 01:39:00,828 INFO L226 Difference]: Without dead ends: 4343 [2021-11-07 01:39:00,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=769, Invalid=1883, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:39:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2021-11-07 01:39:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 907. [2021-11-07 01:39:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 639 states have (on average 1.6651017214397497) internal successors, (1064), 906 states have internal predecessors, (1064), 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) [2021-11-07 01:39:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1064 transitions. [2021-11-07 01:39:00,885 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1064 transitions. Word has length 77 [2021-11-07 01:39:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:00,885 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1064 transitions. [2021-11-07 01:39:00,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 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) [2021-11-07 01:39:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1064 transitions. [2021-11-07 01:39:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:39:00,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:00,899 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:00,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-07 01:39:01,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-07 01:39:01,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-07 01:39:01,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:39:01,500 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:39:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash 688279334, now seen corresponding path program 3 times [2021-11-07 01:39:01,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:01,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192235032] [2021-11-07 01:39:01,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:39:01,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:01,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:01,502 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:01,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:39:02,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 01:39:02,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:02,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:39:02,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:03,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:05,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:05,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192235032] [2021-11-07 01:39:05,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192235032] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:05,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1318723063] [2021-11-07 01:39:05,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:39:05,220 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:05,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:05,221 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:05,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:39:08,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 01:39:08,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:08,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:39:08,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:08,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:08,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1318723063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:08,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971809168] [2021-11-07 01:39:08,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:39:08,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:39:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:08,853 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:39:08,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eed85457-2157-46fb-bf70-1cba242fde3a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process